| Entries |
| Document | Title | Date |
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| 20080198756 | METHOD AND APPARATUS FOR ENABLING THE DETECTION OF TRANSPARENT DEFECTS - The present invention enables the network to determine the true state of events that appear normal but produce service disruptions by periodically probing the status of all network elements and endpoints and comparing this status to historical graphs of the network. Events that deviate from a historical view will be alarmed to determine their true status. | 08-21-2008 |
| 20080219175 | Connectionless configurations for stress testing timing and synchronization in data packet networks - A method and system for providing connectionless configurations for stress testing timing and synchronization in data packet networks. Packet traffic of interest is transmitted through multiple interconnected switching nodes such that different packets can be transmitted over different paths through the switching nodes. The nodes can support background traffic in order to generate delays for the packets at each of the switching nodes. By allowing packets to use multiple paths in a single testing configuration, a connectionless packet flow can be utilized for adaptive packet timing recovery stress testing. | 09-11-2008 |
| 20080232261 | TRANSMISSION APPARATUS, TEST METHOD, AND TRANSMISSION APPARATUS CONTROL PROGRAM - A transmission apparatus transmits/receives test frames to test connectivity between the transmission apparatus and another transmission apparatus to/from the other transmission apparatus at regular intervals. The transmission apparatus includes a frame length changing unit that changes a frame length, which is capacity of each of the test frames, at every transmission when the test frames are transmitted to the other transmission apparatus at the regular intervals; a reception determining unit that determines whether the test frames having changed frame lengths transmitted from the other transmission apparatus at the regular intervals have been received at the regular intervals; and a frame length calculating unit that calculates the frame length of the test frame that has not been received if the reception determining unit determines that the test frame has not been received. | 09-25-2008 |
| 20080239972 | SYSTEM AND METHOD OF PERFORMANCE MONITORING OF MULTICAST SERVICES WITH MOBILITY SUPPORT - An approach is disclosed for monitoring performance of a network providing multicast and mobility services. A test profile is generated for determining performance of the multicast network. The test profile is uploaded on a mobile host that is configured to communicate over the multicast network, wherein the mobile host is further configured to participate in a test session according to the test profile. Test session information tracked by the mobile host is collected for evaluation of metrics for the performance of the multicast network. | 10-02-2008 |
| 20080239973 | METHOD OF DATA INTEGRITY CONTROL IN AN AFDX NETWORK - The invention relates to a data integrity checking system in a frame-switched on-board network, comprising at least first and second asynchronous transmitter terminals, with the second ( | 10-02-2008 |
| 20080285471 | Call Release in Communication Networks - A controller requests a gateway to release a call. The gateway then disconnects and communicates the disconnect to at least one additional network node along the end-to-end connection on the resource control level. In the case of a high level recovery of a controller a temporally close stop of charging of disconnected connections is effected without the controller signaling it. | 11-20-2008 |
| 20080285472 | INTELLIGENT FAILOVER IN A LOAD-BALANCED NETWORK ENVIRONMENT - A hash table in the network device driver maintains data on the traffic characteristics for each network interface (“NIC”) within a computing device. If one of the NICs in the computing device becomes unreliable, the cost function in the hash engine allows the software driver to initiate network traffic redistribution among the remaining reliable NICs in the computing device. Using this hash engine, the software driver is able to intelligently redirect each of the network connections on an unreliable NIC to a reliable NIC within the computing device, in a way that optimizes the distribution of network traffic across the remaining reliable NICs. Alternatively, if a connection is moved from an old NIC to a new NIC, the software driver can detect the moved connection and offload the moved connection to a hardware offload engine on the new NIC. With this approach, issues such as network interface overloading and computing device performance degradation may be more easily avoided when failing over network connections, thereby improving overall system performance relative to prior art techniques. | 11-20-2008 |
| 20080298261 | Reconfigurable Test System - There is disclosed a reconfigurable network test system. The reconfigurable test system may include a plurality of test modules, a plurality of network interface units, a plurality of bypass units, and a multi-port switch. Each of the network interface units may have a first end and a second end adapted to be connected to a network. Each bypass unit may be in communication with an associated test module, the first end of an associated network interface unit, a first associated switch port, and a second associated switch port. Each bypass unit may have a first mode wherein the associated test module is placed in communication with the first end of the associated network interface unit, and a second mode wherein the associated test module is placed in communication with the first associated switch port and the associated network interface unit is placed in communication with the second associated switch. | 12-04-2008 |
| 20090003225 | METHOD AND APPARATUS FOR PROBING OF A COMMUNICATION NETWORK - The test packet sequencer according to the present invention, is configured to generate one or more sequences of packets and subsequently place these one or more sequences of packets onto a communication network. The test packet sequencer is further configured to measure timings associated with the one or more sequences of packets. For example, the test packet sequencer can be configured to measure the departure and/or receipt times of one or more sequences of packets. In order to overcome inherent delays or inaccuracies relating to the functionality of one or more components along the network path, the test packet sequencer is configured to pre-activate at least a portion of the network path prior to placement of the one or more sequences of packets on the communication network. | 01-01-2009 |
| 20090010173 | APPARATUS AND METHOD FOR DISCONTINUOUS RECEPTION IN MOBILE TELECOMMUNICATION SYSTEM - A communication apparatus and method for performing discontinuous reception in a mobile communication system is provided. The communication apparatus continues to turn on a receiver during a reception-on (Rx-on) period associated with persistent resource allocation to receives a packet, and receives a retransmission packet transmitted through the persistent resources at the Rx-on period spaced from the Rx-on period by a processing time of the retransmission packet given taking into account feedback information determined according to a reception error of the packet. | 01-08-2009 |
| 20090010174 | METHOD AND DEVICE FOR EXCHANGING DIAGNOSTIC DATA FOR THE SIMULATION OF AIRCRAFT COMPUTER NETWORKS - The object of the invention is a method and a device for exchanging diagnostic data for simulation of computer networks of aircraft. Diagnostic data exchange is achieved in a network between a network node and a diagnostic terminal connected to the network. The network node is capable of receiving simulation commands in real time and diagnostic commands. According to the invention, the network node is capable of receiving simulation commands according to at least one predetermined time period, time-based segregation being achieved for emission of diagnostic data relative to processing of simulation commands. | 01-08-2009 |
| 20090028059 | Method and System for Simulating a Communication Network, Related Network and Computer Program Product Therefor - A simulator system for simulating a wireless local area network in a combination of a wireless local area network and one or more 2G or 3G mobile communication networks includes a first set and a second set of access protocol simulation devices representative of wireless local area network apparatus implementing access protocols. The first set of access protocol simulation devices is representative of radio technology independent apparatus providing integration of the wireless local area network with the mobile communication network(s). The second set of access protocol simulation devices is representative of radio technology dependent apparatus present in the wireless local area network. The simulator is thus configured for simulating different types of wireless local area network technology in the wireless local area network by varying the access protocol simulation devices in the second set while maintaining the access protocol simulating devices in the first set. | 01-29-2009 |
| 20090046590 | Voice Over Internet Protocol (VOIP) Testing - A method and apparatus for testing a VoIP telephone line are provided, the method including determining which of a plurality of VoIP call control protocols and/or CODECs is compatible with the telephone line, and conducting a series of tests on the telephone line in accordance therewith. The method and apparatus also includes steps and the means to connect to a network and capturing a stream of data therefrom to determine configuration settings of a VoIP telephone connected thereto to facilitate the previous testing. | 02-19-2009 |
| 20090052338 | HOME NETWORK OPTIMIZING SYSTEM - A system for optimizing a network having a plurality of network devices. The system includes a network monitoring tool simultaneously executable on at least one of the network devices and configured to diagnose a condition of the network. The network monitoring tool includes an information collection module configured to collect an information set relating to performance of each of the network devices, an action module configured to execute an action in response to the information set, the action relating to a diagnosed condition of the network, and an information transmission module configured to transmit the information set to an electronic device remote from the network. The system further includes a configuring tool executable on a server computing device. The configuring tool includes an information receiving module configured to receive the information set, and a programming module configured to configure the network monitoring tool based on the received collected information. | 02-26-2009 |
| 20090059804 | Methods and apparatus for generating simulated network traffic - Embodiments of the invention relate to generating simulated network traffic. In some embodiments, simulated network traffic may be generated using a specification of a sequence of frames to be transmitted from the network testing device. The specification may specify at least two frames including a first frame and a second frame. The specification may further specify a first interframe gap associated with the first frame and a second interframe gap, having a different length from the first interframe gap, associated with the second frame. | 03-05-2009 |
| 20090080338 | SYSTEMS AND METHODS FOR FLOW MIRRORING WITH NETWORK-SCOPED CONNECTION-ORIENTED SINK - Systems and methods for sinking port mirrored from one or more identified flows of data to any node in a network are provided. Moreover, the network is configured to convey the mirrored data to the sink, without the need for any facilities expressly dedicated for this purpose. The present invention removes the requirement to co-locate the sink port within the same logical node. The present invention uses a mirrored flow configured as a provisioned layer two point-to-point connection, such as a Switched Permanent Virtual Circuit (SPVC), Pseudo-Wire (PWE3), a Virtual Local Area Network (VLAN) cross-connect, Provider Backbone Bridging—Traffic Engineering (PBB-TE), and the like. The node with the mirrored port is configured to create copies of the appropriate set of packets (i.e., ingress, egress packets, or both based on provisioning and based on the identified flow), and to forward the packets to the sink port through the provisioned point-to-point connection. | 03-26-2009 |
| 20090086645 | APPARATUS AND METHOD FOR PASSIVELY ANALYZING A DATA PACKET DELIVERY PATH - A packet transmission diagnostic system transmits diagnostic packets during a communications session in which data packets are transmitted between a source and destination. The diagnostic packets elicit responses from routers along a path between the source and destination. The elicited responses, in the form of packets, are used by the diagnostic system to produce one or more packet-delivery metrics for one or more of the routers along a packet transmission path between the source and destination. | 04-02-2009 |
| 20090097408 | VOICE OVER INTERNET PROTOCOL NETWORK TEST DEVICE AND METHOD - The invention includes a device and a method for testing a communication network that includes an Internet Protocol (VoIP) network. The inventive device includes a user interface for communicating results of a test, a transceiver for allowing the test device to communicate with a telecommunications network, and a digital signal processor for reformatting a communication signal to be tested by the device. The digital signal processor may include at least one coder/decoder that uses various compression protocols including wherein the digital signal processor uses at least one of the following data compression techniques: G.711a-law, G711μ-law, G.720, G.723.1, G.726, G.728, G.729, G.729A, and G.729AB2. The transceiver also may be a power line modem. The inventive device may include a processor, random access memory, read only memory, a user interface, and a network interface. The inventive method for testing the VoIP network includes accessing a telecommunications network that includes the VoIP network, conducting tests on the VoIP network using a butt set device, and displaying results of the test on the user interface located on the test device. The present invention may also comprise a power line communication VoIP network telephone. | 04-16-2009 |
| 20090122710 | EVENT CORRELATION USING NETWORK DATA FLOW SIMULATION OVER UNMANAGED NETWORK SEGMENTS - A network simulator comprises a virtual network and event correlation logic. The virtual model models a network that comprises a managed portion and an unmanaged portion. The event correlation logic, when executed, is operable to perform receiving first data indicating that an event occurred in the network. A network flow is initiated at a source virtual network element (VNE) corresponding to the source network device toward a destination VNE corresponding to the destination network device. A first VNE is communicatively coupled to a particular VNE corresponding to an unmanaged portion of the network. A logical topological link to a second VNE is identified and traversed. Second data that is associated with the unmanaged portion of the network is identified. As a result, the first data is stored in association with the second data. | 05-14-2009 |
| 20090135728 | USER DATAGRAM PROTOCOL TRACEROUTE PROBE EXTENSION - The embodiments described herein provide methods and apparatuses for implementing a User Datagram Protocol traceroute probe extension. In an example embodiment, a request to transmit a User Datagram Protocol (UDP) packet to a remote destination is received. A probe header and a probe data element is then stored in a data field of the UDP packet. The UDP packet is then transmitted toward the remote destination. In an example embodiment, a User Datagram Protocol (UDP) packet is received and it is determined whether the UDP packet includes a probe data structure. When the determination is affirmative, the probe data structure is processed. | 05-28-2009 |
| 20090175177 | METHOD FOR TESTING A WIRELESS NETWORK DEVICE - The invention relates to a method and a system for testing a wireless network device ( | 07-09-2009 |
| 20090185499 | Network performance and reliability evaluation taking into account abstract components - Network performability characteristics with improved accuracy are derived by taking into account, in the various analyzed network failure states, attributes of elements at the logical level other than just the capacities of edges, as well as by taking into account one or more “abstract components,” such as scheduled maintenance, and by using multiple traffic matrices. | 07-23-2009 |
| 20090185500 | VIRTUALIZATION OF NETWORKING SERVICES - A method of configuring a virtual network comprises: running a user-interactive business requirements wizard from a server, the wizard collecting business requirements from a user; translating the business requirements into technical requirements for a network configuration using the server; selecting a network configuration from a network configuration database using the server, the selecting utilizing the technical requirements; testing the network configuration using a processor; monitoring the testing and generating new facts regarding performance of the network configuration, using the processor; feeding back the new facts to the server for use by the server in the selecting; and repeating the selecting, testing, monitoring and generating, and feeding back, until the server determines a criterion for network stability has been reached. The method may include automatically discovering local network characteristics using a networking device, prior to the selecting, sending the characteristics to the server for use by the server in the selecting. | 07-23-2009 |
| 20090190482 | Relative One-Way Delay Measurements Over Multiple Paths Between Devices - Disclosed are, inter alia, methods, apparatus, computer-readable storage media, mechanisms, and means for measuring relative one-way delay measurements over multiple paths between devices. The relative one-way delays from a networked device to a remote device can be determined based on the round-trip delay of pairs of probe/probe-return packets as each pair takes a different path to the remote device and takes the same path from the remote device to the networked device. The relative one-way delays from a remote device to a networked device can be determined based on the round-trip delay of pairs of probe/probe-return packets as each pair takes a same path to the remote device and takes a different path from the remote device to the networked device. | 07-30-2009 |
| 20090201822 | SWITCH MATRIX - A switch matrix for selectively connecting at least one of N signal inputs to at least one of M signal outputs, N and M being integers greater than two, includes a cluster of N input switches arranged about each of the M signal outputs resulting in at least M clusters of N input switches, each input switch having a switch input and a switch output, the switch outputs being connected to respective signal outputs, the clusters and the input switches in the clusters being arranged to permit adjacent switch inputs of adjacent clusters to be connected to form input switch nodes; and a steering switch for each of the signal inputs. The steering switch selectably connects a signal input to an input switch node, wherein the combination of the steering switches and the input switches are operable to connect a desired signal input to a desired signal output. | 08-13-2009 |
| 20090207743 | FACILITATING TRANSFER OF PUSH AND PULL MESSAGES FOR REMOTELY TESTING MOBILE DEVICES - Providing for remote field testing of mobile communication devices is described herein. By way of example, network initiated data received at a mobile device or like device activated on a mobile network can be monitored. Further, an over the air (OTA) message sent by the mobile network to the monitored device can be identified and forwarded to a test device. Additionally, an IP gateway of the mobile network can be monitored for mobile originated pull messages or network originated push messages associated with or identifying the test device. A data translator can reconfigure or reroute data to and from the mobile device and mobile network utilizing information associated with the activated device. Accordingly, remote data exchange can be implemented even if the mobile device is not pre-activated on the mobile network. | 08-20-2009 |
| 20090213739 | Methods for optimizing and evaluating network access techniques - Methods of evaluating access to Virtual Private Networks (VPNs) from alternate access connections and for improving access to VPNs from alternate access connections such as ISPs. The methods include downloading a set of tests through a network backbone to simulate access to the VPN from the alternate access connection and comparing the results of the test to benchmarks for the test of access to the VPN from leased lines and modems. By obtaining comparisons of the tests and the benchmarks, it is possible to determine the throughput of data through the VPN and tell the customer how its access connections are affecting, among other things, the raw data throughput. This allows the customer and/or the network service provider to adjust the access connections to improve communications with the VPN. | 08-27-2009 |
| 20090219823 | METHOD AND APPARATUS FOR AUTOMATING HUB AND SPOKE INTERNET PROTOCOL VIRTUAL PRIVATE NETWORK TROUBLE DIAGNOSTICS - A method and apparatus for automating hub and spoke network trouble diagnostics in a communication network are disclosed. For example, the method retrieves provisioning and configuration data, access interface alarm information, and network facility status data related to the communication network by a diagnostic system, and identifies at least one of: a network configuration error, an access interface error, or a configuration error associated with at least one hub router or at least one spoke router, as the root cause of the problem of the communication network. | 09-03-2009 |
| 20090219824 | SYSTEMS, METHODS AND APPARATUS FOR TESTING A DATA CONNECTION PROVIDED OVER A POWER SUPPLY LINE - Systems, methods and apparatus are described for testing a data connection provided over a power supply line. A testing apparatus is coupled to a socket of the power supply line. The AC power supply line communicatively couples the testing apparatus to a communication device or another testing apparatus. The testing apparatus identifies the signal strengths of signals received by the testing apparatus and identifies the signal strengths of signals received by the communication device. The testing apparatus outputs an indicator of the first signal strength and the second signal strength to a user and this information may be utilized to detect noise or other problems in the data connection provided over the AC power supply line. | 09-03-2009 |
| 20090252046 | ARRANGEMENTS FOR NETWORKS - A system for analyzing a network including a plurality of nodes associated and/or connected together by links. The system includes a processor coupled to a data memory. The processor is configured to access a first representation of the network and associated link weight measures w in the memory. Moreover, the system is configured to provide node values for the nodes and determine from the node values corresponding slope measures for links existing between the nodes, the slope measures being computed from a function of differences in node values and from the weight measures w for the links, the weight measures w being used for scaling the function of differences in nodes values; to select for at least some of the nodes one or more steepest ascent links having one or more greatest positive slope measures; and to generate a second representation corresponding to a steepest ascent graph of the network derived from information included in the steepest ascent links. | 10-08-2009 |
| 20090290501 | CAPTURE AND REGENERATION OF A NETWORK DATA USING A VIRTUAL SOFTWARE SWITCH - Methods and a system of capture and regeneration of a network data using a virtual software switch are disclosed. In an embodiment, a method includes capturing a network data using a virtual software switch, a processor, and a memory. The network data is captured to perform a network visibility analysis and the network data is communicated to at least one port of the virtual software switch. The method includes forming a stored network data in a memory. The method also includes regenerating the stored network data to form a reconstructed data. | 11-26-2009 |
| 20090296590 | Method and Apparatus for Emulating Network Devices - Methods, apparatuses, data structures, and computer readable media are disclosed that represent network devices with encapsulated protocol stacks communicating via a common physical port. The encapsulated protocol stacks include variable combinations of a multiple encapsulation protocols. | 12-03-2009 |
| 20090303887 | METHOD AND SYSTEM FOR TIMESTEP STOCHASTIC SIMULATION FOR NETWORKS - A method and system for analytically simulating the state of a 802.11 WLAN network having a plurality of stations at discreet timesteps, including analytically generating a plurality of sample paths of a network state, including obtaining probability distribution values for aspects of the network. The probability distributions may be precomputed and stored in a cache to be accessed during a simulation of a network. | 12-10-2009 |
| 20100014436 | METHOD AND SYSTEM FOR PROVIDING UPDATES ON ACCESS NETWORK CAPABILITY IN AN IP MULTIMEDIA SYSTEM NETWORK - Updates on access network capability are provided to an IP Multimedia System (IMS) network. A User Equipment (UE) that is connected to the access network initiates a communication session with the IMS network by sending a Session Initiation Protocol (SIP) registration request to the IMS network. The SIP registration request from the UE includes a P-Access-Network-Info (PANI) header or an Open Mobile Alliance (OMA) header, having a tag that includes current information regarding one or more capabilities of the access network to which the UE is currently connected. A triggering event, e.g., a change in Quality of Service, signals the IMS network to modulate service provisions in the IMS network according to the information concerning the access network capabilities that were provided in the PANI header. | 01-21-2010 |
| 20100027429 | Packet Switch Modeling and Using a Packet Switch Model to Test a Packet Switch - Packet switch test methods include receiving a first packet from a packet switch, receiving a second packet from processing circuitry configured to model expected behavior of the packet switch, comparing the first packet to the second packet, and, based on the comparing, determining whether the packet switch is operating according to the expected behavior. Packet switch modeling methods include identifying functionality of a packet switch to be modeled, creating, in a packet switch model, a plurality of nodes representing physical and/or logical elements of the packet switch, the nodes being configured to process packet data structures and to respectively model different portions of the functionality of the packet switch relative to one another, and, in the packet switch model, connecting the nodes with pathways by which the packet data structures may be forwarded between the nodes. | 02-04-2010 |
| 20100034100 | NETWORK LOAD TESTER WITH REAL-TIME DETECTION AND RECORDING - A load tester is configured to generate traffic streams for testing a network. The traffic streams can include one or more stream objects. Each stream object can be characterized by a unique identifier and can include a fixed number of frames. The frames can share the same S_ID and D_ID while being characterized by a unique sequence count. The load tester can receive a plurality of frames, all or some of which belong to a stream object, and analyze the received frames in real-time to identify the occurrence of one or more errors such as out-of-order frame errors, dropped frame errors, and misdirected frame errors. The different types of errors can be individually recorded. | 02-11-2010 |
| 20100097944 | Layer 2 network rule-based non-intrusive testing verification methodology - Systems and methods are described that that analyze Layer 2 network performance and identify problems without having to disrupt customer service. Embodiments employ a two-phase approach to identify network problems. For an ingress switch, embodiments monitor frame relay Management Information Base (MIB) port and channel objects. A trouble ticket with various test results may be issued and a network work center notified with recommendations that include switch checking, network checking, Layer 1 access testing and network connectivity testing. | 04-22-2010 |
| 20100124175 | Apparatus and method for adaptively calculating symbolic start position - An apparatus and a method for adaptively calculating a start position of a series of symbols are provided. The method is applied to a frame synchronization circuit that implements the apparatus for calculating the symbolic start position of a packet-switching communication system. Even under the situations such as higher frequency offset, the frequency offset value approaching zero or unstable frequency offset, the frame synchronization circuit using the claimed method still can estimate the symbolic start position. The preferred method includes a first step of retrieving the signals in a unit of packets, and calculating their delay correlation value. Next, a control circuit is incorporated to retrieve multiple groups of symbols, and to set the parameters of the systems as a basis for identifying the system's property. After that, it's to estimate the symbolic start position. | 05-20-2010 |
| 20100124176 | AUTOMATIC NETWORK TOPOLOGY IDENTIFICATION BY NODES IN THE NETWORK - An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the network. In one embodiment, a current topology is associated with a session number. When a change in the topology is detected, the detecting node increments the session number and broadcasts the change in topology. The other nodes, detecting the changed session number, now know that there has been a change in the network. In response, the nodes in the network modify routing tables and other information stored at the node related to the topology. In one embodiment, the technique is used to reassign shortened addresses to each device on the network to support a dual-addressing mode of the network. The dual addressing mode substitutes reduced-length addresses (referred to as short addresses) for standard addresses (referred to as long addresses) for traffic whose source or destination is internal to a given virtual network topology. The required length of short addresses used for a given virtual topology is dependent on the number of devices reachable within the topology. | 05-20-2010 |
| 20100128612 | DIAGNOSING NETWORK PROBLEMS IN AN IPV6 DUAL STACK NETWORK - Embodiments of the present invention are directed to diagnosing problems in a dual stack network supporting Internet Protocol Version Six (IPV6). Inventoried information can be retrieved from an inventory system in response to a problem associated the dual stack network. It can be determined whether a mismatch exists between live customer address information associated with a customer edge router and the inventoried information. A notification can be generated in response to determining whether a mismatch exists. The notification includes information representing a cause of the problem and resolution of the problem. | 05-27-2010 |
| 20100142383 | TEST APPARATUS AND TEST METHOD - Provided is a test apparatus that tests a device under test, comprising an upper sequencer that sequentially designates packets transmitted to and from the device under test, by executing a test program for testing the device under test; a packet data sequence storing section that stores a data sequence included in each of a plurality of types of packets; and a lower sequencer that reads, from the packet data sequence storing section, a data sequence of a packet designated by the upper sequencer and generates a test data sequence used for testing the device under test. | 06-10-2010 |
| 20100142384 | System reliability evaluation method for transmission by a single minimal path in time restriction - A system reliability evaluation method for transmission by a single minimal path in time restriction is disclosed. The single minimal path includes plural arcs between a start node and a terminal node in a flow network. The method includes the steps of providing a virtual network in a computer for simulating the flow network; inputting a transmission requirement, a budget restriction and a time restriction; distributing the transmission requirement in a minimal path of the virtual network for getting a capacity vector to represent the flow distribution of the flow network; under the capacity vector, checking if the transmission cost satisfy the budget restriction for sending the transmission requirement in the minimal path; thereby, defining a lower boundary vector; and computing a system reliability that is a probability of any one capacity vector being lager than or equal to the lower boundary vector. | 06-10-2010 |
| 20100142385 | Communication system, delay insertion server, backup server and communication control apparatus - A communication system includes a probe transmission server | 06-10-2010 |
| 20100142386 | NETWORK AND METHOD PROVIDING AN INDICATION OF NETWORK CAPABILITIES TO A USER FOR SPECIAL NUMBER CALLS - Networks and methods are disclosed for providing an indication of the capability of a communication network for serving special number calls. Before a user places a special number call, the communication network determines the capability of the communication network for serving a special number call, and provides the indication of the network capability to the user. The user is thus kept aware of the quality of the special number service available to them through the communication network. | 06-10-2010 |
| 20100157816 | Method and System for Evaluating Network Connectivity In Rule-Based Applications - A computer readable storage medium includes a set of instructions executable by a processor. The instructions are operable to assign a unique identifier to each of a plurality of node subsets of a network, the node subsets being created by damage to the network; assign one or more of the identifiers to each of a plurality of components of the damaged network based on a connectivity to the one or more of the node subsets and corresponding identifiers of the node subsets; assign one or more of the identifiers to each of one or more node types of the plurality of components by assigning each of the node types all of the identifiers of any of the components of the node type; and evaluate a first connectivity between a first one of the components and a second one of the components by determining whether they share at least one of the identifiers. | 06-24-2010 |
| 20100177644 | Intelligent fast switch-over network tap system and methods - An intelligent fast switch-over network active tap system enables active monitoring of a network segment connected between network devices. A fail-safe relay subsystem is coupled between a pair of network ports, enabling transmission of network communications signals through a passive cross-connect between the network ports or through an active bridge subsystem. The active bridge subsystem is capable of independently establishing network links with the network devices, and a separate network link with a monitoring device. A controller manages operation of the relay and active bridge subsystems, including switches between passive and active network transmission through the tap system and to determine and establish the active network links subject to symmetric network link parameters and state. Thereby, the network link status of the connected network devices is preserved on switch between active and passive transmission and correctly reflected in the presence of link and power failures. | 07-15-2010 |
| 20100195509 | SYSTEM AND METHOD FOR TESTING NETWORK ELEMENTS USING A TRAFFIC GENERATOR WITH INTEGRATED SIMPLE NETWORK MANAGEMENT PROTOCOL (SNMP) CAPABILITIES - A system and method in accordance with exemplary embodiments may receive, from a management system, configuration data associated with a management protocol. In addition, the system and method may generate test data traffic at least based on the configuration data. Further, the system and method may transmit, to one or more network elements, the test data traffic. Even further, the system and method may receive, from the management system, a query associated with the management protocol that requests data traffic information associated with at least one of the generated test data traffic, transmitted test data traffic, and received test data traffic. The system and method may transmit, to the management system, the requested data traffic information in response to the query. | 08-05-2010 |
| 20100246416 | SYSTEMS AND METHODS FOR REMOTE TESTING OF WIRELESS LAN ACCESS POINTS - The present disclosure describes systems and methods for remote testing and troubleshooting of a Wireless Local Area Network (WLAN) using one or more distributed WLAN sensors and one or more servers. Specifically, the invention describes a method to test WLAN access points (APs) for connectivity and performance in the field. In an exemplary embodiment, the one or more distributed WLAN sensors and one or more servers can include a wireless monitoring system, such as a wireless intrusion prevention or detection system. The present invention utilizes a distributed network of WLAN sensors that typically operate to monitor the WLAN, and as needed, the present invention converts the monitoring sensors to WLAN clients capable to connecting and remotely testing one or more WLAN APs. | 09-30-2010 |
| 20100254270 | SIGNAL TRANSMITTING APPARATUS AND SIGNAL TRANSMITTING METHOD - A signal transmitting apparatus includes: a plurality of data transmission lines that transmit output data to a memory; a plurality of delay units that are correspondingly connected to the plurality of data transmission lines, that delay test data according to a delay signal for a predetermined time, and that output the delayed test data to each of the data transmission lines; and a transmitting/receiving controller that compares the stored data in the memory with the test data to adjust the delay signal, and that outputs the adjusted delay signal to each of the plurality of delay units. With this configuration, when data is transmitted to a memory through a data bus, a delay value can be adjusted among a plurality of signal lines constituting a data bus, and thus signal transmission can be performed uniformly. | 10-07-2010 |
| 20100265832 | METHOD AND APPARATUS FOR MANAGING A SLOW RESPONSE ON A NETWORK - A method and an apparatus for detection and prevention of a slow response on a network are disclosed. For example, the method selects a router automatically for testing in response to a ticket indicating a slow response, and performs a diagnostic test on the router, wherein the diagnostic test comprises at least one of: a protocol diagnostic test, a circuit diagnostic test or, a congestion diagnostic test. The method then performs at least one remedial step to address a root cause that is identified by the diagnostic test, wherein the root cause is associated with the slow response. | 10-21-2010 |
| 20100278052 | INTELLEGENT COMMUNICATIONS NETWORK TAP PORT AGGREGATOR AND METHODS THEREOF - A network tap port aggregator for use in monitoring a network is provided. The network tap port aggregator includes a first device interface terminal for receiving a first network feed. The network tap port aggregator also includes a second device interface terminal for receiving a second network feed. The network tap port aggregator further includes a circuitry coupled with the first device interface terminal and with the second device interface terminal, the circuitry configured to monitor the first network feed and the second network feed and to aggregate the first network feed and the second network feed into an aggregated network feed. The network tap port aggregator yet also includes a first monitor interface terminal coupled to the circuitry for providing the aggregated network feed to a first network monitor that is external to the network tap port aggregator. | 11-04-2010 |
| 20100290350 | Capacity Planning Using User-Level Data and Upward Projections - A telecommunications network capacity planning system. The telecommunications network capacity planning system includes a telecommunications network including a telecommunications services provider, subscribers and a network coupling the telecommunications services provider and the subscribers for provisioning of the telecommunications services. A database system is used for collecting and storing data at the user-level associated with provisioning of telecommunication services over the telecommunications network. A processor is coupled to the database system. The processor models the telecommunications network by generating upward projections from the stored user-level data and transforms the modeling of the network to a visual display of capacity information and network parameters for manipulation to evaluate capacity planning scenarios. | 11-18-2010 |
| 20100290351 | MAINTENANCE OF WIRELESS FIELD DEVICES - A method of commissioning a wireless field device is provided. The method includes communicatively coupling a handheld field maintenance tool to the wireless field device to obtain a wireless field device identifier. A wireless network is selected. Wireless communication is generated between the handheld field maintenance tool and a wireless gateway to automatically obtain a join key for the wireless field device identifier. The join key is written to the wireless field device with the handheld field maintenance tool. | 11-18-2010 |
| 20100302952 | NETWORK SWITCH, PATH SETTING METHOD, AND PROGRAM - A transfer path of a multicast packet is set to an output port, from among a plurality of outputs each associated with a plurality of input ports, which is specified to output the multicast packet. The number of completed path setting processes which is the number of processes for which path setting has been completed, is counted. It is determined whether or not the number of completed processes counted is identical with the number of processes for executing the multicast communication. When it is determined that the numbers are identical with each other, it is recognized that the transfer path setting of the multicast communication has been completed. | 12-02-2010 |
| 20100315959 | System reliability evaluation method for routing policy - A system reliability evaluation method for routing policy is disclosed. The single minimal path of the routing policy includes plural arcs between a start node and a terminal node in a flow network. The method includes the steps of providing a virtual network in a computer for simulating the flow network; inputting a transmission requirement, a budget restriction and a time restriction; distributing the transmission requirement in a first minimal path of the virtual network for getting a first feasible probability; if the first minimal path is inactive, distributing the transmission requirement in a second minimal path of the virtual network and getting a first inactive probability of the first minimal path; getting a second feasible probability of the second minimal path; and computing a system feasible probability of the virtual network by the first feasible probability, the first inactive probability and the second feasible probability, defining the system reliability. | 12-16-2010 |
| 20110002228 | Scheduler Using a Plurality of Slow Timers - There is disclosed a scheduler for a traffic generator and a method of scheduling traffic. A working memory may stores N respective timer values for N count-down timers, where N is an integer greater than one. An arithmetic and logic unit (ALU) may update each timer value in rotation every N cycles of a clock. A temporal interpolator may delay output data from the ALU by a selectable delay period of 1 to N cycles of the clock. | 01-06-2011 |
| 20110069620 | Misdirected Packet Detection Apparatus and Method - There are disclosed methods and a packet receiver for testing a network. A packet may be received from the network at a port unit. The port unit may ignore the received packet if the received packet does not contain a valid test signature. When the received packet contains a valid test signature, the port unit may determine if the port unit is an expected destination for the received packet. When the port unit is not an expected destination for the received packet, a misdirected packet counter may be incremented. When the port unit is an expected destination for the received packet, test data may be extracted from the received packet. | 03-24-2011 |
| 20110069621 | Network Testing Using Control Plane and Data Plane Convergence - There is disclosed a system and method for implementing a control plane/data plane test to evaluate the performance of a device under test upon the occurrence of a critical event. The method may be performed by a network testing system. | 03-24-2011 |
| 20110122776 | Method, Apparatus, and Computer Program Product for Traffic Simulation Tool for Networks - Method, apparatus, and computer products are provided for creating a network design and simulating communication traffic over the network design on a computer. Input of network elements is received, and the network elements are operatively connected by links to form a network design. Each network element and each link include parameters representative of software and hardware. Input is received of a test condition for a simulation of communication traffic over the network design. The test includes the type of communication traffic, the amount of communication traffic, and the times at which the communication traffic occurs. The computer executes the simulation of the test condition for the network design to determine a survivability for the network elements and the links connecting the network elements. The computer executes an impact analysis on the output of the simulation to determine if there are excessive loads on the network elements and links. | 05-26-2011 |
| 20110141917 | PROTOCOL FREE TESTING OF A FABRIC SWITCH - A switch fabric for a modular router may be tested without connecting the switch fabric portion of the router to the other modular portions of the router. The switch fabric may generate test data units and insert the test data units into one or more elements of the switch fabric. The switch fabric may operate with the inserted test data units. A control component may receive data units from the switch fabric after operation of the switch fabric and analyze the received data units to determine whether the received data units correspond to the inserted test data units. | 06-16-2011 |
| 20110158108 | ETHERENT PHYSICAL LAYER TEST SYSTEM AND METHOD - An Ethernet physical layer test system and method, wherein a signal pattern generator is utilized to generate repeatedly a signal pattern frame required by the test items of the Ethernet physical layer according to a transmission procedure of a medium access controller; meanwhile, the signal pattern generator generates a control signal for switching a multiplexer, so as to control the transmission of a signal pattern frame. The Ethernet physical layer receives the signal pattern frame and outputs a test packet to a measurement instrument via a twisted-pair, for testing and analyzing quality of signals output by the Ethernet physical layer. Through the application of this Ethernet physical layer test system and method, the time required for testing the Ethernet physical layer can be effectively reduced, thus simplifying the complexity of an algorithm in testing the Ethernet physical layer. | 06-30-2011 |
| 20110182191 | Testing Network Equipment - There are disclosed a system, a test module and a method for testing a network device. One or more test modules may be plugged into respective ports of the network device in replacement of respective pluggable transceiver modules. Each test module may include at least one of a traffic generator and a traffic receiver to transmit and receive, respectively, test traffic via the network device. | 07-28-2011 |
| 20110194422 | COMMUNICATION INFORMATION ACQUISITION CREATION SYSTEM, NETWORK SWITCH, AND NETWORKS SWITCH EVALUATION METHOD - The present invention provides a communication information acquisition creation system | 08-11-2011 |
| 20110242993 | TEST METHOD FOR NETWORK SYSTEM - A load test method for a network system in which a plurality of node devices exchange packets via a first switch device by way of a second switch device, includes transmitting a plurality of first packets to the first switch device by a first node device, the plurality of first packets being addressed to the first node device via the second switch device, transmitting a plurality of second packets to the first switch device by a second node device, the plurality of second packets being addressed to the first node device via the first switch device, storing the first packets and the second packets in a queue buffer and thereafter transferring the first packets and the second packets to the first node device by the first switch device, and monitoring state information based on the number of packets waiting to be exchanged in the second switch device. | 10-06-2011 |
| 20120076006 | VIRTUAL SWITCH INTERCONNECT FOR HYBRID ENTERPRISE SERVERS - Virtual switch interconnect for hybrid enterprise servers including a method for network configuration that includes receiving network configuration data and switch state information for a network. The network includes a plurality of switches and links between the switches. The receiving is at a first computer that is coupled to a second computer via the network to offload processing from the first computer to the second computer. The switches include at least one virtual switch. It is detected that a first link and a second link provide two different paths between two of the switches. The first link is selected, at the computer, as a primary link based on contents of the network configuration data. The second link is deactivated in response to the selecting. | 03-29-2012 |
| 20120113821 | MODELLING APPARATUS AND METHOD - A method determined a routing of data between two network elements of a telecommunications network, which are interconnected via a transmission path. The method includes identifying plurality of layers of a telecommunications model from which the transmission path is comprised, and developing a reachability table by identifying a connection between each transmission element in each layer to other transmission elements in the same or a different layer of the transmission path. For each connection defining a set of communications parameters which define a cost of communicating data via the connection and allocating a weighting value for communicating data via the connection, for all possible routes between the two network elements along the transmission path via each of the layers modelling the effect of the connection for routing the data in accordance with the set of communications parameters for the connection and determining a weighted result along each path, and combining the weighted results to determine a metric of performance for each of the possible routes. An optimum route can then be determined for routing data in accordance with for example a minimum cost metric. | 05-10-2012 |
| 20120113822 | SWITCHING MODULE - A fiber channel switching module can include an integrated trace buffer memory, a crossbar switch and a control processor disposed on a single line replaceable module (LRM). The trace buffer memory may be adapted to capture selected data traffic transiting the switch fabric based on pre-selected triggers. The selected data can be read out of the trace buffer memory and used for selected diagnostics. | 05-10-2012 |
| 20120155290 | CARRYING OUT PREDICTIVE ANALYSIS RELATING TO NODES OF A COMMUNICATION NETWORK - The invention relates to a method for carrying out predictive analysis relating to nodes of a communication network. The method comprises the steps of providing communication event information for a first set of nodes and a second set of nodes of the communication network, providing a set of attributes for the nodes of the first set, using said attributes and said communication event information for determining a set of groups among the first set of nodes, assigning each node of the second set to at least one group of the set of groups based at least on the communication event information available for the second group, the assigning resulting in membership information of the nodes of the second set as well as deriving or applying a prediction model for the second set of nodes based on the communication event information for the second set and the membership information. | 06-21-2012 |
| 20120163197 | ROUTING VALIDATION - A simulator simulates routing system protocols to build routing tables corresponding to a modeled network, and a comparator compares the routing tables in the actual network to these simulator-created routing tables. Because the modeled system represents a fault-free version of the actual system, and assuming that the modeled routing system protocols are representative of the algorithms used in the actual routers, these simulator-produced routing tables can represent steady-state routing tables that should be present in the routers of the actual network at steady state. By querying each router in the actual network for its routing table and comparing each routing table to the corresponding simulator-produced routing table, any differences from the steady state can be identified. | 06-28-2012 |
| 20120176917 | INTEGRATED SWITCH TAP ARRANGEMENT AND METHODS THEREOF - An integrated switch tap device for managing and monitoring network traffic is provided. The device includes a set of network ports for receiving and outputting the network traffic. The device also includes a first logic arrangement for performing routing functionalities and a first CPU for processing the routing functionalities. The device further includes a set of monitoring ports that is coupled to one or more monitoring devices. The device yet also includes a first tap module, which is configured at least for intercepting at least part of the network traffic flowing through the network device, creating a copy of at least part of the network traffic, and forwarding the copy to at least one of the set of monitoring ports. The device moreover includes a second CPU configured at least for processing tap functionalities associated with the first tap module. | 07-12-2012 |
| 20120182883 | METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR RESOURCE ALLOCATION OF COEXISTENT SECONDARY NETWORKS - Method, apparatus, and computer program product embodiments are disclosed to provide for wireless resource sharing between heterogeneous wireless networks to enable coexistence of secondary networks in a TV band white space by grouping two or more of the neighboring networks into subsets based on predefined rules. An example embodiment of the invention includes a method, comprising the steps of: maintaining, at an apparatus, information regarding at least one of used communication protocols, operator identifiers, and bandwidths associated with one or more wireless networks served by the apparatus and wireless networks neighboring the one or more wireless networks served by the apparatus; forming, from the one or more wireless networks served by the apparatus and the wireless networks neighboring the one or more wireless networks served by the apparatus, a number of subsets, based on at least one of the used communication protocols, the operator identifiers, and the bandwidths associated with the one or more wireless networks served by the apparatus and the wireless networks neighboring the one or more served wireless networks; and comparing the number of formed subsets with a number of available channels. | 07-19-2012 |
| 20120182884 | Fast SSL Testing Using Precalculated Cryptographyc Data - Methods and computer readable storage media to test secure network connections. One or more pre-calculated encryption data (PCCD) sets may be defined in accordance with a secure communications protocol. The one or more PCCD sets may be stored in a first PCCD memory and a second PCCD memory located respectively within a first port unit and a second port unit of a plurality of port units. Each PCCD set may include at least a first parameter and a second parameter generated by encrypting the first parameter. A simulated secure connection between the first port unit and the second port unit via a network under test may be opened using a selected PCCD set from the one or more PCCD sets without performing decryption processing. | 07-19-2012 |
| 20120207031 | HYPERVISOR ROUTING BETWEEN NETWORKS IN A VIRTUAL NETWORKING ENVIRONMENT - A physical host executes a virtual machine monitor (VMM) that instantiates a source virtual machine (VM). In response to the VMM receiving from the source VM a packet specifying a first destination address of a destination VM and a second destination address of a default gateway, the VMM determines whether the packet can be communicated to the destination VM without the packet being routed by the default gateway. In response to the VMM determining that the packet can be communicated to the destination VM without the packet being routed by the default gateway, the VMM forwards the packet to the destination VM such that the packet bypasses routing by the default gateway. | 08-16-2012 |
| 20120230208 | Metadata Capture for Testing TCP Connections - Methods, port units, and computer readable storage media for testing network connections are disclosed. A plurality of Transmission Control Protocol (TCP) connections with one or remote devices may be established via a network. Metadata may be extracted from TCP packets transmitted via the plurality of TCP connections and TCP packets received via the plurality of TCP connections. The extracted metadata may be stored in a memory. | 09-13-2012 |
| 20120243423 | Adjustments of IUB Load Measurements - A method may include determining whether a discrepancy exists between scheduling headroom computable by a first device and scheduling headroom computable by a second device, determining one or more load measurements that the second device bases its computation of the scheduling headroom if it is determined that the discrepancy exists, modifying the one or more load measurements, and calculating the scheduling headroom based on the modified one or more load measurements. | 09-27-2012 |
| 20120250528 | Network System - In a network system in which a large number of terminals that transmit information exist and data extraction is performed via a wide area network, when data filtering is performed by using terminals called entrance nodes, existing in front of the wide area network, efficient operation of the entrance nodes is a goal to achieve. In one implementation, when an entrance node has detected an alteration to a configuration of diverse resources attached to it, it updates management information by communicating with other entrance nodes existing in the neighborhood. In a further implementation, through a query and reply exchange about allocations of filtering and quick response processes to be executed by entrance nodes, reallocating process items, pre-filtering of necessary data, and relaying data between entrance nodes are performed. | 10-04-2012 |
| 20120257514 | Failure Notification in a Network Having Serially Connected Nodes - Multicast capabilities of a link state protocol controlled network are used to accelerate the flooding advertisement of topology change notifications within portions of the network. This flooding mechanism may be particularly efficient in a network with a large number of two-connected nodes such as a ring network architecture. A control plane specific multicast group address is used when flooding topology change notifications, and a process such as reverse path forwarding check is used as an additional control on forwarding of the notification to prevent looping of control plane packets. Two-connected nodes insert a forwarding entry into their FIB to enable frames containing the control message to be forwarded via the data plane on to the downstream node so that propagation of the control message along a chain of two-connected nodes may occur at data plane speeds. | 10-11-2012 |
| 20120275317 | TIMING OVER PACKET DEMARCATION ENTITY - Apparatus for monitoring a packet switched network, the apparatus comprising: at least one port for receiving and transmitting packets; a local clock; and a packet inspector that uses time from the local clock to timestamp packets received at a port of the at least one port, and additionally copies timing information from received timing distribution packets, which are transmitted from a master clock to a slave clock in order to discipline the slave clock, and forwards the received packets for transmission from a port of the at least one port; wherein the apparatus uses the timestamp of a received timing distribution packet and the copied timing information to monitor timing distribution performance of the network . | 11-01-2012 |
| 20120294156 | Modular Switching Network Node for a Communications Network - A modular switching network node for a communications network, i.e., an industrial communications network, where the modular switching network node comprises a switching network node base unit and at least one port module, the at least one port module comprises at least one connection interface for coupling to the communications network, and where the modular switching network node is configured to forward communication data over one of the connection interfaces of the modular switching network node to at least one additional connection interface of the modular switching network node. The switching network node base unit is configured such that at least one of the port modules is swappable for a functional module to expand the functionality of the switching network node. | 11-22-2012 |
| 20130010613 | NETWORK SWITCH WITH TRAFFIC GENERATION CAPABILITY - A packet switch system includes a packet switch appliance having a first network port configured to receive packets, and a first instrument port configured to communicate with a network monitoring tool, a storage system for storing the packets, and an integrated circuit configured to retrieve the packets from the storage system, and retroactively transmit the packets to the first instrument port in a play-back configuration in response to a user's command. | 01-10-2013 |
| 20130010614 | METHOD AND APPARATUS FOR PROCESSING PACKETS IN IPv6 NETWORK - Disclosed is a method and apparatus for processing packets in an IPv6 network. A CPE (Customer-Premises Equipment) replaces source address information in an IP packet with external address information after receiving the IP packet from a user terminal, stores a mapping relation between the source address information and the external address information; converts the IP packet into an IPv6 packet, and transmits the IPv6 packet to an NPE (Network-Premises Equipment) via an IPv6 tunnel between the CPE and the NPE; receives a second IP packet from the NPE via the IPv6 tunnel, converts the second IP packet according to destination address information in the second IP packet, replaces the destination address information in the converted second IP packet with the source address information corresponding to the destination address information in the mapping relation, and transmits the second IP packet to the user terminal. | 01-10-2013 |
| 20130058225 | DISTRIBUTED NETWORK CONTROL APPARATUS AND METHOD - Some embodiments provide a distributed control system for controlling managed switching elements of a network. The distributed control system comprises a first controller for converting a first set of input logical control plane data to a first set of output logical forwarding plane data. It also includes a second controller for converting a second set of input logical control plane data to a second set of output logical forwarding plane data. The logical forwarding plane data is translated into physical forwarding behaviors that direct the forwarding of data by the managed switching elements. | 03-07-2013 |
| 20130058226 | NETWORK VIRTUALIZATION APPARATUS - Some embodiments provide a network virtualization apparatus for managing a plurality of managed switching elements that forward data in a network. The network virtualization apparatus comprises a controller for converting logical control plane data to logical forwarding plane data. It also includes a virtualizer for converting the logical forwarding plane data to physical control plane data. In some embodiments, the physical control plane data is subsequently translated into physical forwarding plane data that direct the forwarding of data by the managed switching elements. | 03-07-2013 |
| 20130070616 | DATA TRANSCEIVER AND DATA-TRANSCEIVING METHOD FOR BIO-IMPLANTABLE MEDICAL DEVICES - The invention relates a transmitter for transmitting data in bio-implantable medical devices, comprising: an activation unit which transmits; to a receiver, a predetermined number of frame bits which indicate the start of data transmission so as to activate the receiver; a preamble state notification unit which transmits, at the state where the receiver is activated or during data transmission to the receiver, a preamble data signal for turning the receiver into a preamble state; and a synchronization unit which transmits synchronization data for synchronization between the transmitter and the receiver in the preamble state. | 03-21-2013 |
| 20130121170 | COMMUNICATION SYSTEM, NODE, STATISTICAL INFORMATION COLLECTION DEVICE, STATISTICAL INFORMATION COLLECTION METHOD AND PROGRAM - For use in a communication system where communication is carried out by setting a packet handling operation (flow entry) in the nodes by a control device, the present invention provides a configuration in which statistical information may be collected at a desired information granularity level without increasing the control load of the control device. A node of the communication system includes a packet processing unit that processes a received packet according to a packet handling operation defining a matching rule and processing of a packet that matches the matching rule; and a statistical information recording unit that records statistical information on a packet according to a division different from the matching rule, and a statistical information collection device is provided that issues an instruction on a division, according to which the statistical information is to be recorded, to the node and collects the statistical information. | 05-16-2013 |
| 20130148511 | AMPP ACTIVE PROFILE PRESENTATION - One embodiment of the present invention provides a port profile management mechanism. The port profile management mechanism detects an active profile associated with a physical port on a switch and displays configuration of the port based on the identified port profile using the display mechanism. In addition, a port group management mechanism obtains information of a port group associated with a virtual machine, wherein the port group defines network configurations for the virtual machine. The port profile management mechanism detects a port profile associated with the virtual machine coupled to a physical port on a switch and displays an alert using the display mechanism in response to the port group and the port profile being out of synchronization. | 06-13-2013 |
| 20130188498 | Equipment in a Data Network and Methods for Monitoring, Configuring and/or Managing the Equipment - There is provided a multicast router comprising a Simple Network Management Protocol (SNMP) agent and an SNMP database and a method of monitoring the router. In some embodiments the method comprises the multicast router receiving, via a downstream network interface, multicast data requests made by one or more hosts; the multicast router reading data contained in the multicast data request; the multicast router storing first data in the SNMP database for a downstream network interface, a multicast group address and a first host that requests multicast data, wherein the first data comprises information of the multicast groups and multicast channels requested by the first host; and the SNMP agent of the multicast router transmitting to an SNMP control station, using a version of the SNMP protocol, at least a part of the first data stored in the SNMP database. | 07-25-2013 |
| 20130215766 | SYSTEM AND METHOD FOR IDENTIFYING MULTIPLE PATHS BETWEEN NETWORK NODES - Aspects of the invention pertain to transmitting packet data across a computer network. The packets may be sent via one or more distinct routes from a source to a destination. Each route may employ multiple routers disposed along the network. Non-colliding routes are determined by transmitting pairs of probe packets along the routes. A first probe packet has a maximal length, and a second probe packet has a minimal length. Depending on the order of arrival of the probe packets, the system determines whether two transport layer ports at the destination device collide. If there is a collision, then the system searches for a set of non-colliding ports. Once the non-colliding ports are determined, application data may be sent as packets along the different routes to those ports. | 08-22-2013 |
| 20130223237 | DIVERSE PATHS USING A SINGLE SOURCE ROUTE IN COMPUTER NETWORKS - In one embodiment, a source device determines a source route from itself to a destination device in a computer network, and forwards a first packet on the source route with the source route included within the first packet. In addition, the source device generates a second packet with the source route included within the second packet, the second packet also including an indication to cause one or more of a plurality of transit devices to forward the second packet to a reachable 1-hop neighbor of a device in the source route two hops away from the respective transit device. The source device may then forward the second packet itself, as do one the one or more transit devices on a diverse path based on the source route, to a particular reachable 1-hop neighbor of a particular device in the source route two hops away from the source (or transit) device. | 08-29-2013 |
| 20130235735 | DIAGNOSTICS IN A DISTRIBUTED FABRIC SYSTEM - A distributed fabric system has distributed line card (DLC) chassis and scaled-out fabric coupler (SFC) chassis. Each DLC chassis includes a network processor and fabric ports. Each network processor of each DLC chassis includes a fabric interface in communication with the DLC fabric ports of that DLC chassis. Each SFC chassis includes a fabric element and fabric ports. A communication link connects each SFC fabric port to one DLC fabric port. Each communication link includes cell-carrying lanes. Each fabric element of each SFC chassis collects per-lane statistics for each SFC fabric port of that SFC chassis. Each SFC chassis includes program code that obtains the per-lane statistics collected by the fabric element chip of that SFC chassis. A network element includes program code that gathers the per-lane statistics collected by each fabric element of each SFC chassis and integrates the statistics into a topology of the entire distributed fabric system. | 09-12-2013 |
| 20130235736 | METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR TESTING A DIAMETER ROUTING NODE - According to one aspect, the subject matter described herein includes a method for testing a Diameter routing node. The method occurs a Diameter routing node. The method includes receiving, from a Diameter message generation module and via a test connection, a first Diameter message. The method also includes modifying the first Diameter message to include a test indicator parameter indicating the first Diameter message is a test message. The method further includes processing the first Diameter message. The method also includes directing the first Diameter message to an egress message manager. | 09-12-2013 |
| 20130242760 | APPARATUS FOR IDENTIFYING INTERCONNECTIONS AND/OR DETERMINING THE PHYSICAL STATE OF CABLE LINES IN A NETWORK AND ASSOCIATED COMPONENTS - An apparatus for identifying interconnections in a network. The apparatus comprises a plurality of transmitter coupling units, a plurality of receiver coupling units, and an interconnection identification means configured to identify interconnections between the transmitter coupling units and the receiver coupling units by cable lines in the network. In some embodiments, the interconnection identification means is configured to, if any one of the transmitter coupling units is coupled to the same cable line as a selected one of the receiver coupling units, identify the interconnection between the transmitter coupling unit and the selected receiver coupling unit according to by a binary tree search algorithm. | 09-19-2013 |
| 20130250781 | Signal Combining Apparatus - The present application relates to a signal combining apparatus ( | 09-26-2013 |
| 20130265886 | SYSTEMS AND METHODS FOR IMPLEMENTING A TRAFFIC VISIBILITY NETWORK - A method of packet processing, includes: providing a plurality of network appliances that form a cluster, wherein two or more of the plurality of network appliances in the cluster are located at different geographical locations, are communicatively coupled via a private network or an Internet, and are configured to collectively perform out-of-band packet processing; receiving a packet by one of the network appliances in the cluster; processing the packet using two or more of the plurality of the appliances in the cluster; and passing the packet to one or more network monitoring tools after the packet is processed. | 10-10-2013 |
| 20130294260 | METHODS FOR PROVIDING A STATUS TO DEVICES IN A DISTRIBUTED SYSTEM - A method for providing a status to a plurality of devices in a distributed VoIP system includes circulating a first status data packet between each device in the first group of devices and circulating a second status data packet between each device in the second group of devices. One device in the first group of devices participates in circulating both the first status data packet and the second status data packet, while the other devices in the first group of devices circulate only the first status data packet. One device in the second group of devices participates in circulating both the first status data packet and the second status data packet, while the other devices in the second group of devices circulate only the second status data packet. | 11-07-2013 |
| 20130343205 | METHODS AND APPARATUS FOR PROVIDING EXPANDED TELECOMMUNICATIONS SERVICE - The present invention provides flexible call processing. For example, a call processor system can receive an inbound call intended for a called party and place an outbound call to the called party. The call processing system can provide the called party with a call transfer option. | 12-26-2013 |
| 20130343206 | MOBILE TELEPHONE RESELECTION BETWEEN A CIRCUIT SWITCHED CELLULAR NETWORK AND THE INTERNET AND USE OF THE INTERNET TO CONNECT MOBILE SWITCHING CENTERS TO ANTENNAS - A call routing system for use with a wireless telephone systems is disclosed. The system, which monitors the subscriber's current physical location, determines the device to which a call should be terminated, and routes the call. The device can be any IP telephone, including a cable television system adapted to IP telephony. The system routes calls without direct subscriber actions, without a second telephone number, regardless of the time of day and day of week. Various options can also apply to a call, determined by subscriber-established preferences, when specified criteria are met, or calls can be limited to/from specified telephone numbers. The system and method uses signaling techniques that will allow routing of the call, along with any authorization or restrictions, to be done remotely from the actual switching of the call. Call events are transmitted to the call routing system while the communications path of the call is held at the switching system awaiting call routing information. The identity of the subscriber is established using existing means that are used to authenticate the user. The wireless phone user does not have to enter any additional codes or identification to obtain access to the call routing system. | 12-26-2013 |
| 20140016482 | METHODS AND APPARATUS FOR ANALYZING NETWORK TRAFFIC IN A NETWORK INCLUDING A PLURALITY OF NETWORK ANALYZERS - Methods and apparatus for analyzing network traffic in a network are disclosed herein. The network may include a plurality of network analyzers. An method for analyzing network traffic may include: receiving a data packet at a first network element including a first header that indicates a destination address of a second network element; generating a new data packet including a copy of at least a portion of the received data packet and a second header that indicates a destination address of a plurality of network elements that are configured to monitor the network traffic; transmitting the received data packet to the second network element; and separately transmitting the new data packet. The new data packet may be replicated by one or more network elements along transmission paths between the first network element and the plurality of network elements that are configured to monitor the network traffic. | 01-16-2014 |
| 20140022915 | METHOD, SYSTEM AND APPARATUS FOR VERIFYING VALIDITY OF LOCATION INFORMATION IN A PACKET-BASED NETWORK - According to embodiments of the present invention, there are provided a method, system and apparatus for determining validity of location information in a packet-switched network. A method for determining if location information associated with an endpoint in a packet-switched network is valid, the location information having been stored in a memory, comprises obtaining an access device identifier associated with an access device responsible for handling a communication session between the endpoint and the packet-switched network. The access device identifier is then compared with a last known access device identifier associated with the endpoint to enable determining if the location information is valid. | 01-23-2014 |
| 20140022916 | DUPLICATING NETWORK TRAFFIC THROUGH TRANSPARENT VLAN FLOODING - An approach to duplicating network traffic is described. In one approach, a method of creating multiple copies of network traffic is detailed. The method involves receiving network traffic, producing a duplicate copy of the network traffic, and forwarding the duplicate copy to a monitoring port. The monitoring port forwards copies to a number of indicated ports. | 01-23-2014 |
| 20140056152 | PORT MIRRORING IN DISTRIBUTED SWITCHING SYSTEMS - Port mirroring in a clustered network may be performed between a local switch and a remote switch. A port in the remote switch may be designated a mirrored port where data traffic passing there through can be copied and sent to a mirror-to-port on the local switch. In a virtual local area network (VLAN) environment, data frames of the copied traffic may include a VLAN header identifying the local switch so that routing of the data frames through the network may direct the data frames for monitoring at the local switch. | 02-27-2014 |
| 20140064105 | DIAGNOSTICS IN A DISTRIBUTED FABRIC SYSTEM - A distributed fabric system has distributed line card (DLC) chassis and scaled-out fabric coupler (SFC) chassis. Each DLC chassis includes a network processor and fabric ports. Each network processor of each DLC chassis includes a fabric interface in communication with the DLC fabric ports of that DLC chassis. Each SFC chassis includes a fabric element and fabric ports. A communication link connects each SFC fabric port to one DLC fabric port. Each communication link includes cell-carrying lanes. Each fabric element of each SFC chassis collects per-lane statistics for each SFC fabric port of that SFC chassis. Each SFC chassis includes program code that obtains the per-lane statistics collected by the fabric element chip of that SFC chassis. A network element includes program code that gathers the per-lane statistics collected by each fabric element of each SFC chassis and integrates the statistics into a topology of the entire distributed fabric system. | 03-06-2014 |
| 20140092754 | PACKET TAGGING MECHANISM - A method is disclosed. The method includes capturing a first packet at a network monitoring card, capturing the first packet at a first filter, generating a first tag corresponding to the first filter and storing the first packet in memory with the first tag. | 04-03-2014 |
| 20140112159 | CIRCUIT EMULATION SERVICE FOR CARRYING TIME DIVISION MULTIPLEXED SCADA TRAFFIC - Embodiments of the invention employ specially adapted P2MP and MP2P transmission techniques to communicate traffic of a TDM based SCADA system over an IP/MPLS based network. Advantageously, by specially adapting P2MP and MP2P transmission techniques to carry TDM based SCADA traffic over an IP/MPLS network, an existing TDM based SCADA system can be migrated to an IP/MPLS network and operated in an easy to manage and bandwidth efficient manner as compared to a solution that employs point-to-point connections between a SCADA master node and subsystems over an IP/MPLS network. Furthermore, since TDM based SCADA equipment would not need to be replaced with IP based SCADA equipment in such a migration, significant equipment and installation costs associated with such replacement can be avoided. | 04-24-2014 |
| 20140119203 | USE OF TEST PACKETS BY PACKET SWITCHES IN COMPUTER NETWORKS - A packet switch receives a management packet sent for discovery on a data flow's path through a network. The switch creates a test packet ( | 05-01-2014 |
| 20140133316 | Parameter Estimation Device, Parameter Estimation Method, and Parameter Estimation Program - A parameter estimation device | 05-15-2014 |
| 20140140221 | DYNAMIC RE-ASSIGNMENT OF SERVICE PORTS TO ACTIVE VIRTUAL NETWORK SWITCH BASED ON SERVICE POLICY - Embodiments generally provide techniques for mapping service modules on a network device. Embodiments identify a plurality of service modules, each configured to perform a respective service. A first one of the plurality of service modules is mapped to a first one of a plurality of virtual switches on the network device. Service policy information for a plurality of virtual switches is retrieved. The service policy information is indicative of service requirements for each of the plurality of virtual switches. Upon detecting an occurrence of a predefined event, embodiments determine a second one of the plurality of virtual switches to map the first service module to, based on the service policy information. The first service module is then mapped to the second virtual switch. | 05-22-2014 |
| 20140153408 | APPARATUS AND METHOD FOR MANAGING REQUESTS FOR SERVICE - A system that incorporates the subject disclosure may include, for example, responsive to a determination that a first communication session is in a first state and a first sub-state, monitoring for an active timer associated with the first sub-state, where the first state and the first sub-state are defined by a communications protocol. The system can, responsive to a detection of the active timer, monitor for a packet switching service initiation request generated by the applications processor. The system can, responsive to detecting the packet switching service initiation request, temporarily prevent the packet switching service initiation request from being transmitted by the transceiver. Other embodiments are disclosed. | 06-05-2014 |
| 20140177454 | METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR EFFECTING MOVEMENT OF VIRTUAL SWITCH INTERFACES BETWEEN VIRTUAL SWITCHES CONNECTED TO DIFFERENT PHYSICAL PORTS OF A DEVICE UNDER TEST - Methods, systems, and computer readable media for effecting movement of virtual switch interfaces between virtual switches connected to different physical ports of a device under test are disclosed. One method includes operating a virtual switch interface behind a first edge relay on a protocol emulator to send packets to a first physical port of a device under test. The method further includes determining whether sufficient resources exist on a second physical port of the device under test to support the virtual switch interface. The method further includes, in response to determining that sufficient resources exist on the second physical port of the device under test to support the virtual switch interface, moving the virtual switch interface to a second edge relay on the protocol emulator connected to the second physical port of the device under test. | 06-26-2014 |
| 20140185463 | CONNECTING NODE FOR A COMMUNICATIONS NETWORK - A connecting node for a communications network is described, especially for connection of a network element of the communications network to the communications network, wherein the connecting node has a first interface for connection of the network element to the connecting node and a second interface for connection of the connecting node to the communications network, wherein the connecting node is constructed to enable an exchange of data between the communications network and the network element via the first and second interface, and wherein the connecting node is constructed to read and/or to alter and/or to block data exchanged between the communications network and the network element. | 07-03-2014 |
| 20140198668 | DATA LINK LAYER SWITCH FRAME FORWARDING ANALYSIS - Systems and methods to analyze layer-2 data frame switch forwarding are provided. A first switch may be coupled to a second switch. The first switch may maintain state information mirroring the state of the second switch. A sequence number may be appended to a data frame that is received at the first switch. Forwarding compliance of the second switch may be determined by analyzing a runtime attribute of the first switch. | 07-17-2014 |
| 20140198669 | DYNAMICALLY DETERMINING PACKET SAMPLING RATES - For dynamically determining packet sampling rates, a method including setting a packet sampling rate for one or more switch ports, collecting for an interval of time a plurality of statistics for the one or more switch ports, and adjusting the packet sampling rate in response to one or more of the plurality of statistics. | 07-17-2014 |
| 20140211639 | Network Tracing for Data Centers - Network devices facilitate network tracing using tracing packets that travel through the network devices. The network devices may be switches, routers, bridges, hubs, or any other network device. The network tracing may include sending tracing packets down each of multiple routed paths between a source and a destination, at each hop through the network, or through a selected subset of the paths between a source and a destination. The network devices may add tracing information to the tracing packets, which an analysis system may review to determine characteristics of the network and the characteristics of the potentially many paths between a source and a destination. | 07-31-2014 |
| 20140233400 | SERVICE AWARENESS AND SEAMLESS SWITCHOVER BETWEEN CLIENT BASED WIFI ACCESS AND MOBILE DATA NETWORK ACCESS - A system and method provides seamless switchover of a user device (UE) between a mobile data network and a wireless network while providing policy and charging control (PCC) of the data session in the mobile data network. A mobile core network component is made ASF aware to process user data traffic related to an auto switching function (ASF) server from a UE client located on the UE using a special access point name (APN). The mobile core network component then uses a dedicated deep packet inspection (ASF DPI) for all data transfers to the special APN. The core network component is then able to process the UE data traffic seamlessly as the traffic is toggled between the ASF tunnel the WiFi tunnel. By monitoring the data traffic on the ASF tunnel, the core component (GGSN/PGW) is able to provide PCC for the data session. | 08-21-2014 |
| 20140233401 | Method and Apparatus for Setting Network Node Location - A method and an apparatus for setting a network node location. The method is applied in a router in a ZigBee network and includes acquiring, by the router, a network parameter of at least one network device in a network connecting to the router; calculating the number of network parameters meeting a predefined threshold condition; mapping the number of the network parameters meeting the predefined threshold condition to corresponding indication information, wherein the indication information indicates deployment performance of the router in the network; and providing the indication information for a user, wherein the indication information is used to instruct the user to set a location for the router in the network. | 08-21-2014 |
| 20140254395 | Remote Monitoring a Layer 2 Virtual Private Network - Novel tools and techniques that enable remote network monitoring, and in particular cases, remote monitoring of traffic on a L2VPN. In a particular aspect, tools enable a vendor-independent remote monitoring capability by allowing a port on to be spanned (mirrored) to a virtual local area network attachment circuit at two different provider edge devices. Such embodiments can allow test equipment located at one provider edge device to perform monitoring at another provider edge device without regard to conflicting monitoring protocols, interfaces, and/or the like. | 09-11-2014 |
| 20140254396 | Unified Systems Of Network Tool Optimizers And Related Methods - Systems and methods are disclosed for unified systems of network tool optimizers (NTOs). A NTO supervisor device controls switch fabric circuitry to interconnect a plurality of NTO member devices so that packets received at a source port for one NTO member device can be output to a destination port for a different NTO member device. The NTO supervisor device is further configured to analyze filters for the NTO member devices and to generate filter rules for forwarding packets among the various NTO member devices using the switch fabric circuitry. Further, additional secondary NTO supervisor devices can also be included within the unified NTO system to further expand the system. As such, a plurality of NTO member devices are managed and controlled by one or more NTO supervisor devices to form a highly scalable and efficient unified NTO system. | 09-11-2014 |
| 20140254397 | Methods and Systems for Calibrating a Network Switch - A network switch includes first and second clock-and-data-recovery (CDR) circuits, a cross-bar switch electrically coupling the first and second CDR circuits, and a test pattern generation circuit electrically coupled to the first CDR circuit. The test pattern generation circuit is configured to generate a test pattern and transmit the test pattern from the first CDR circuit to the second CDR circuit via the cross-bar switch. The network switch also includes a test pattern checking circuit electrically coupled to the second CDR circuit and configured to verify the test pattern received at the second CDR circuit. | 09-11-2014 |
| 20140269351 | System and Method for Steering Packet Streams - In one embodiment, a system for steering an input packet stream includes a traffic splitter configured to split an input packet stream into a first packet stream and a second packet stream, and a photonic switching fabric coupled to the traffic splitter, where the photonic switching fabric is configured to switch the first packet stream. The system may also include an electrical packet switching fabric coupled to the traffic splitter, where the electrical packet switching fabric is configured to switch the second packet stream, and a traffic combiner coupled to the photonic switching fabric and to the electrical packet switching fabric, where the traffic combiner is configured to merge the first switched packet stream and the second switched packet stream to produce a first packet flow. | 09-18-2014 |
| 20140269352 | System and Method for Buffer Status Reporting for Multi-Stream Aggregation - Embodiments are provided herein for enabling buffer status reporting for Multi-stream aggregation (MSA) in wireless networks. In an embodiment, a user equipment (UE) receives from a network, a configuration regarding one of enabling and disabling cross-node buffer status reporting. The UE further receives a first uplink grant from a first network node, and obtains a buffer status intended for a second network node. Upon enabling cross-node buffer status reporting according to the configuration, the UE transmits, in the first uplink grant to the first network node, the buffer status intended for the second network node. The first network node receives, from the UE, the buffer status intended for the second network node, and determines whether to forward the buffer status to the second network node according to the configuration regarding buffer status forwarding previously received at the first network node. | 09-18-2014 |
| 20140286177 | METHOD AND SYSTEM FOR INTERCEPTING OVER-THE-TOP COMMUNICATIONS - An approach for lawful intercept of over-the-top (OTT) communications is described. A request is received to intercept one or more OTT communications. Such interception can be part of a legal mandate of an appropriate law enforcement agency. One or more session and flow identification signatures associated with a packet-based network are determined. Signaling and media traffic associated with the one or more OTT communications are identified, translated and delivered to the law enforcement agency. | 09-25-2014 |
| 20140334315 | METHOD AND TERMINAL FOR PROCESSING DATA TRANSMISSION SERVICE - A method for processing data transmission services and a terminal are disclosed. The method includes: after a radio link disconnection occurs in a process of only performing the data transmission services of a packet-switched domain in a dedicated state, if judging that a timing value configured with a first timer is 0, a terminal deleting a radio access bearer and a signaling connection of the packet-switched domain; and if judging that a timing value configured with a second timer is not 0, initiating a cell update process, wherein, the first timer is a timer used for monitoring reestablishment of packet-switched domain services; the second timer is a timer used for monitoring reestablishment of circuit-switched domain services. According to the above scheme, the flow of processing a stream interruption of the terminal in a data transmission process can be perfected, and the drawbacks of the existing flow can be solved. | 11-13-2014 |
| 20140362709 | SYSTEM AND METHOD FOR BASE TOPOLOGY SELECTION - A system and method for base topology selection includes a network controller including a control unit and one or more ports coupled to the control unit and configured to couple the network controller to one or more network switching devices of a network. The network controller is configured to receive initiation messages from the network switching devices, receive configuration and status messages from the network switching devices, transmit discovery requests to the network switching devices, receive discovery responses from the network switching devices, determine a network topology of the network based on information associated with the initiation messages, the configuration and status messages, and the discovery responses, apply heuristic rules to the network topology, and select a base topology based on results of the applied heuristic rules. The network controller may further be configured to transmit flow control messages to the network switching devices to provision the network consistent with the selected base topology. | 12-11-2014 |
| 20140369209 | NETWORK-WIDE VERIFICATION OF INVARIANTS - A network-wide verification system may be adapted with a data plane verification layer positioned between a set of multiple network devices and a controller in network communication with the devices, where the controller is configured to transmit packet-forwarding rules to the devices. The data plane verification layer monitors network rule modifications, such as monitoring modifications initiated by the network devices and/or by the controller, and verifies the validity of invariants of the monitored network according to multiple stored network invariants. The verification may be executed on parts of the network taking actions that are capable of being influenced by a new rule modification. The network invariants include conditions expected to be upheld in valid network operation as related to packet routing and the packet-forwarding rules. | 12-18-2014 |
| 20140376389 | SYSTEM AND METHOD FOR MANAGING TELEPHONY ENDPOINT INVENTORY - A system and method for managing an endpoint repository of a communication platform that includes managing a set of telephone endpoints that can be in an allocated state or an unallocated state; classifying endpoints of the set of telephone endpoints with a set of classifiers; evaluating endpoint inventory across a set of endpoint classification groupings and detecting at least one classification grouping that, based in part on the allocated and unallocated state of corresponding endpoints, satisfies an inventory update condition; generating an endpoint transfer request that specifies the endpoint classifiers of the classification grouping; and selectively adding endpoints from the inventory source to the endpoint repository. | 12-25-2014 |
| 20150016279 | Using Headerspace Analysis to Identify Classes of Packets - Some embodiments provide a method that uses headerspace analysis. The method receives several flow entries for distribution to a set of forwarding elements that implement a logical network. The method models each of the flow entries as a function that operates on a representation of a packet header. The method uses the modeled functions to identify a set of paths from a packet source to a packet destination. For each particular path of the identified paths, the method uses inverses of the modeled functions to determine a set of packet headers. Packets sent from the packet source with any packet header in the set of packet headers follow the particular path through the flow entries. | 01-15-2015 |
| 20150016280 | Virtual Interface Applications - The invention relates to a network gateway comprising a gateway function configured to perform one or more predetermined operations on or with respect to data reaching the gateway function, a first application configured to participate in testing of the gateway function by exchanging data with a second application, and a routing unit configured for routing at least some of the data exchanged between the first application and the second application so that the at least some of the data reaches the gateway function. Implementing the first application for testing a particular gateway function on the network gateway having that function, as opposed to implementing the first application in a device in a network communicatively connected to the gateway, eliminates the need to have a device in the network that is available for testing of that function of the gateway. | 01-15-2015 |
| 20150029870 | BOUNDED-BUDGET MONITOR DEPLOYMENT IN MONITORING NETWORKS VIA END-TO-END PROBES - The present disclosure relates generally to mechanisms for bounded-budget monitor deployment in monitoring networks via end-to-end probes. In various embodiments, methodologies may be provided that automatically perform bounded-budget monitor deployment in monitoring networks via end-to-end probes. | 01-29-2015 |
| 20150036513 | MULTICORE PROCESSING OF BIDIRECTIONAL TRAFFIC FLOWS - A method of assigning a core to process a packet in a data network and a device using the same are provided in the present invention. The method comprises: extracting a traffic flow identifier from a packet in a traffic flow of a link in the data plane; performing a HASH function calculation on the traffic flow identifier to generate a HASH result V; performing a logical AND calculation on the HASH result V and a preconfigured array size parameter to generate a lookup index; using the lookup index to find a worker index in a preconfigured worker array that represents one of N cores assigned to process the packet; and processing the packet by the assigned one of N cores. | 02-05-2015 |
| 20150043360 | Method for Monitoring, at the Correct Time, TT Ethernet Messages - The invention relates to a method for monitoring, at the correct time, TTEthernet (TT) messages communicated by a TTEthernet switch (TTE switch) in a distributed real-time computer system. According to the invention, the TTE switch has a global time having precision P and accuracy A, and the TTE switch has a plurality of communication channels and one or more monitoring channels, and the TTE switch contains a selection data structure that specifies which TT message classes are to be monitored, and a copy of a TT message which belongs to a TT message class selected for monitoring is formed in the TTE switch and is transmitted by the TTE switch via a monitoring channel to a monitoring node, and the TTE switch subsequently autonomously transmits an ET message containing an identifier and the exact transmission time of the monitored TT message via a monitoring channel to a monitoring node. | 02-12-2015 |
| 20150071087 | Methods, Systems, and Products for Voice-Over Internet Protocol Calls - Network resources for a call between a calling party and a called party are allocated. The network resources for the call are reserved based on a reservation request. The network resources are reserved before any one network resource from the reserved network resources is committed. The reserved network resources for the call are committed when a called party indicates acceptance for the call. | 03-12-2015 |
| 20150078176 | SELECTIVELY REFRESHING ADDRESS REGISTRATION INFORMATION - Facilitating communications within a processing environment. Inbound traffic and outbound traffic on one or more virtual interfaces of the processing environment are monitored for a predefined amount of time. Based on the monitoring, a determination is made as to whether for a selected component of a virtual interface of the one or more virtual interfaces an inbound frame has been received but an outbound frame has not been transmitted for the predetermined amount of time. Based on determining that the inbound frame has been received but the outbound frame has not been transmitted, a generated outbound frame is forwarded to cause address registration information for the virtual interface to be refreshed. | 03-19-2015 |
| 20150092571 | PROXY MEDIA SERVICE FOR DIGITAL TELEPHONY - A Session Initiation Protocol (SIP) service system includes a SIP-enabled soft switch at a telephony service provider, executing code from a coupled machine-readable medium, routing SIP transactions to remote destinations, a media server coupled to the SIP-enabled soft switch storing media including ring tones and music-on-hold for use in progressing transactions, and an interface to a wide-area-network (WAN) for transmitting transactions and media. | 04-02-2015 |
| 20150319030 | SMARTAP ARRANGEMENT AND METHODS THEREOF - Methods for enabling monitoring a network with a monitoring tool are disclosed. The method includes receiving data packets and adding metadata to the data packets, thereby forming metadata-enhanced data packets. The method also includes forwarding the metadata-enhanced data packets along a path toward the monitoring tool, wherein the metadata pertains to data employed by the monitoring tool to perform network monitoring tasks. Arrangements for performing the same are also disclosed. | 11-05-2015 |
| 20150319072 | METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR PROVIDING FUZZ TESTING FUNCTIONALITY - Methods, systems, and computer readable media for providing fuzz testing functionality are disclosed. According to one method, the method includes at a fuzz testing module (FTM), generating a plurality of test messages, including a test message including fuzzed data, generating fuzzed message identification information, and transmitting the test message and the fuzzed message identification information to a device under test (DUT). The method also includes at a packet analyzer located between the FTM and the DUT, receiving the plurality of test messages and the fuzzed message identification information, and identifying the test message including the fuzzed data using the fuzzed message identification information. | 11-05-2015 |
| 20150327091 | SELECTIVE REAL-TIME GTP SESSION TRACKING USING DISTRIBUTED PROCESSING TECHNIQUES - A distributed network monitoring device monitors via a lightweight session tracking module of a network monitoring device, control plane data for connectivity sessions of User Equipment (UE) in a communication network. The lightweight session tracking module selectively identifies at least one bearer for a corresponding connectivity session according to one or more control plane attributes and associates each selectively identified bearer for the corresponding connectivity session with a bearer routing rule for user plane data. A packet routing module receives user plane data for connectivity sessions of UE and transmits the user plane data of the connectivity sessions according to the bearer routing rule of the lightweight session tracking module to a flow processing module for subsequent data flow analysis. | 11-12-2015 |
| 20150333983 | METHODS AND SYSTEMS FOR MONITORING NETWORK ROUTING - The disclosed methods and systems include collecting routing data from a plurality of network routers, and correlating the routing data across routers and across time to obtain network data. The network data can be streamed to a user in real-time and the user can interactively query the data. In one embodiment, interactive routing analyses, drill-down, and forensics can be performed using a repository of Border Gateway Protocol (BGP) update traffic. Alarms can be set to detect selected routing problems. In setting the alarms, the message data for each router can be processed in timestamp order. Current message data from each router can be compared with previous message data to determine a condition status. An alarm can be provided when the condition status meets a temporal correlation criterion and/or a spatial correlation criterion. Based on the computed instability metrics for individual network prefixes and on a common property of those prefixes, a group instability metric for a group of network prefixes can be computed. | 11-19-2015 |
| 20150358839 | METHOD AND SYSTEM FOR TESTING A RADIO FREQUENCY DATA PACKET SIGNAL TRANSCEIVER AT A LOW NETWORK MEDIA LAYER - Method and system for testing a radio frequency (RF) data packet signal transceiver device under test (DUT) by monitoring RF data packet signals between a tester and a DUT at a low network media layer, such as the physical (PHY) layer in accordance with the Open Systems Interconnection (OSI) reference model stack. By testing at a low layer, fewer signal conversions and data packet operations are required to perform various basic DUT tests, such as data packet throughput, DUT signal transmission performance, DUT packet type detection without packet decoding, validation of rate adaptation algorithms, and bit error rate (BER) testing. | 12-10-2015 |
| 20150365290 | NETWORK VERIFICATION APPARATUS, NETWORK VERIFICATION METHOD AND PROGRAM - A device for network verification includes a verification information input unit that accepts input of information for verification which represents definition of a configuration of a network being verified and a behavior model of a component included in the network. The device also includes a verification code formulation unit that formulates, from the information for verification, a code for verification which verifies an over approximate model which is such a model that has corrected the behavior model so that the model obtained on correction does not have to resort to match conditions identifying a communication packet. The device also includes a model check execution unit that executes model checking using the code for verification, a counterexample validity confirmation unit that checks whether a counterexample obtained in the model checking is also present in an inherent behavior of the network, and a verified result output unit that outputs result of verification based on outputs of the model check execution unit and the counterexample validity confirmation unit. | 12-17-2015 |
| 20160014006 | SYSTEMS AND METHODS FOR IMPLEMENTING A TRAFFIC VISIBILITY NETWORK | 01-14-2016 |
| 20160036989 | CALL EXTENDER FOR INTER-CARRIER NETWORK SWITCH - A method of extending calls includes receiving a request to establish a call session with a called party, and establishing the call session between the calling party and the called party. The method further includes monitoring the length of the established call session, and receiving a message requesting a termination of the call session. Still further, the method includes, in response to receiving the message requesting the termination of the call session, maintaining the established call session for an additional time period, wherein the additional time period plus the monitored length of the established call session is equal to or greater than a threshold of time. | 02-04-2016 |
| 20160080216 | EXPONENTIAL MOVING MAXIMUM (EMM) FILTER FOR PREDICTIVE ANALYTICS IN NETWORK REPORTING - Techniques for an exponential moving maximum (EMM) filter for predictive analytics in network reporting are disclosed. In some embodiments, a process for predictive analytics in network reporting using an EMM filter includes pre-processing network-related data by performing exponential moving maximum (EMM) filtering on the network-related data; and determining predictive analytics based on the EMM filtered network-related data. | 03-17-2016 |
| 20160080240 | Network Tracing for Data Centers - Network devices facilitate network tracing using tracing packets that travel through the network devices. The network devices may be switches, routers, bridges, hubs, or any other network device. The network tracing may include sending tracing packets down each of multiple routed paths between a source and a destination, at each hop through the network, or through a selected subset of the paths between a source and a destination. The network devices may add tracing information to the tracing packets, which an analysis system may review to determine characteristics of the network and the characteristics of the potentially many paths between a source and a destination. | 03-17-2016 |
| 20160112263 | METHOD AND APPARATUS FOR RESPONDING TO EVENTS AFFECTING COMMUNICATIONS IN A COMMUNICATION NETWORK - Aspects of the subject disclosure may include, for example, a waveguide system for determining an event associated with a mode of transmitting or receiving electromagnetic waves on a surface of a transmission medium, identifying according to the event an updated mode for transmitting or receiving adjusted electromagnetic waves on the surface of a transmission medium, and transmitting or receiving the adjusted electromagnetic waves based on the updated mode. Other embodiments are disclosed. | 04-21-2016 |
| 20160142260 | SYSTEMS AND METHODS FOR PROCESSING PACKETS TAPPED FROM A NETWORK USING DISCOVERY PROTOCOL - A network device includes: one or more ports for tapping to a network; and a processing unit configured for receiving a first packet tapped from the network, wherein the first packet is received at a first network port of the network device; determining a first identity of a first network equipment associated with the first packet based on a discovery protocol; and associating the first identity of the first network equipment with a first identity of the first network port of the network device at which the first packet is received; and a non-transitory medium for storing the first identity of the first network equipment and the first identity of the first network port in association with each other. | 05-19-2016 |
| 20160149653 | MOBILE COMMUNICATION TERMINAL TEST DEVICE AND A TEST ANAYLSIS UNIT THEREFOR - A mobile communication terminal test device communicates with a mobile communication terminal to perform a test operation. The test device includes a test analysis unit responsive to a user-selected test from a data store, the test analysis unit determining an execution path of each of a plurality of test operations in the test log corresponding to the user-selected test scenario and comparing the execution path of each of a plurality of test operations to the plurality of execution paths of the user-selected test, and displays a screen comparing the execution path of each of a plurality of test operations to the plurality of execution paths of the user-selected test on a display unit. | 05-26-2016 |
| 20160149779 | SYSTEM STATE MESSAGE IN SOFTWARE DEFINED NETWORKING - A method for a network device reporting system state to a controller, the method comprising a network device:
| 05-26-2016 |
| 20160164768 | DUPLICATING NETWORK TRAFFIC THROUGH TRANSPARENT VLAN FLOODING - Provided are methods, non-transitory computer-readable medium, and network devices for duplicating network traffic through transparent VLAN flooding. In some implementations, a network device comprises a plurality of ports. The plurality of ports may include a first port configured as a receiving port for a VLAN configured for the network device. The plurality of ports may further include a set of ports configured as I/O ports of the VLAN. MAC learning may be disabled for the receiving port. In some implementations, the network device is configured to determine, based on contents of a packet received at the receiving port, that the packet is to be sent to one or more monitoring devices. The network device may further be configure to, upon receiving the packet at the receiving port of the VLAN, cause a copy of the packet to be sent to each of one or more I/O ports of the VLAN. | 06-09-2016 |
| 20160173696 | Methods, Systems, and Products for Voice-Over Internet Protocol Calls | 06-16-2016 |
| 20160254967 | DYNAMICALLY DETERMINING PACKET SAMPLING RATES | 09-01-2016 |
| 20170237645 | INTERMEDIARY NETWORK ELEMENT FOR TAP TRAFFIC | 08-17-2017 |
