Patent application number | Description | Published |
20090269060 | Providing Wavelength Connectivity Information To A Network - In particular embodiments, providing wavelength connectivity information to a network includes establishing wavelength connectivity information for a network node of the network. The network node comprises link pairs, where a link pair has an input link and an output link. The wavelength connectivity information describes a set of available wavelengths between an input link and an output link. The wavelength connectivity information is inserted into an advertisement, and the advertisement is sent to at least a subset of the network nodes of the network in real time. | 10-29-2009 |
20090269061 | Providing Signal Reachability Information To A Network - In particular embodiments, providing signal reachability information to a network includes establishing signal reachability information at a network node of the network. The signal reachability information describes attributes that affect reachability of an optical signal. The signal reachability information is inserted into an advertisement, and the advertisement is sent to network nodes of the network. | 10-29-2009 |
20090269065 | Setting Up A Circuit In A Network - In particular embodiments, setting up a circuit in a network includes establishing by control plane logic that planning pre-conditions for planning a circuit have been satisfied, and initiating the planning of the circuit. The control plane logic establishes that reservation pre-conditions for reservation of a resources for the circuit have been satisfied and initiates the reservation of the resources for the circuit. The control plane logic establishes that activation pre-conditions for activation of the circuit have been satisfied and initiates the activation of the circuit. | 10-29-2009 |
20090279544 | Provisioning Point-To-Multipoint Paths - Establishing a point-to-multipoint path includes establishing a first label switched path from a source to a first destination, where the first label switched path is represented by a first label set comprising first node-label pairs. A second label switched path is established from the source to a second destination, where the second label switched path is represented by a second label set comprising second node-label pairs. One or more of the second node-label pairs are equivalent to one or more of the first node-label pairs. The first label set and the second label set are combined to establish the point-to-multicast path. | 11-12-2009 |
20100054153 | Communicating Information Between Core And Edge Network Elements - In particular embodiments, a network element filters information sent to a neighboring network element. In the embodiments, the core network element may determine whether the neighboring network element is an edge network element or a core network element. If the neighboring network element is an edge network element, the core network element may set a filter, remove traffic engineering information according to the filter, and send the remaining information to the neighboring network element. | 03-04-2010 |
20100104281 | Selecting Regeneration Nodes During Path Computation - According to one embodiment, regeneration information indicating the optical reachability of a set of regeneration nodes is managed. Candidate paths from a source node to a destination node are calculated according to the regeneration information. The destination node is optically reachable from the source node along a candidate path. At least one candidate path is selected from the candidate paths. | 04-29-2010 |
Patent application number | Description | Published |
20110103223 | System and Method to Determine Resource Status of End-to-End Path - Determining availability of an end-to-end physical path associated with reserved resources of a tunnel may include determining, for one or more nodes, a resource status for one or more resources integral to each node. Resource status for the integral resources of each node may be recorded in a message. Each node may communicate its associated message to one or more other nodes. At least one particular node of the one or more nodes may receive the messages communicated from the one or more nodes. The at least one particular node may store resource statuses for each of the one or more nodes. Based on an analysis of resource statuses, the at least one particular node may determine an availability of an end-to-end path of reserved resources of a tunnel including one or more of the nodes based on an analysis of resource statuses. | 05-05-2011 |
20110206368 | Optical Network Computation Engine - An apparatus for computing optical network characteristics may comprise: a plurality of network elements arranged into two or more domains; two or more optical computation engines, each of the two or more optical computation engine associated with a respective one of the two or more domains; and a centralized path computation engine configured to interface with the two or more optical computation engines to calculate one or more characteristics of the optical path. Each of the two or more domains may comprise one or more network elements sharing a common operational characteristic. The plurality of network elements may be in optical communication along an optical path, the optical path including a first network element at an origin of the optical path and a final network element at a terminus of the optical path. The two or more optical computation engines may be configured to perform calculations related to the optical performance of the network elements associated with the same domain as the optical computation engine. | 08-25-2011 |
20110222538 | Method and System for L3 Bridging Using L3-To-L2 Mapping Database - A method may include creating an L3-L2 database on a first switch, the database having one or more entries, each entry: (a) associating a Level 3 (L3) unique identifier associated with a virtual local area network (VLAN) communicatively coupled to the first switch to a Level 2 (L2) unique identifier associated with the VLAN, and (b) associating the L3 unique identifier with a port of the first switch. The method may also include receiving a network packet at the first switch. The method may additionally include determining if a destination VLAN for the network packet has a corresponding entry in the L3-L2 database. The method may further include switching the network packet to the port in response to a determination that the destination VLAN for the network packet has a corresponding entry in the L3-L2 database, such that the packet is communicated to one of: (a) the destination VLAN, and (b) a second switch intermediate to the first switch and the destination VLAN. | 09-15-2011 |