Patent application number | Description | Published |
20080205397 | METHOD FOR FORWARDING MULTICAST PACKETS IN A VIRTUAL PRIVATE LOCAL AREA NETWORK SERVICE - A method for forwarding multicast packets in a virtual private LAN includes: the VPLS VSI monitors PIM messages received by the interfaces and configures the L2 multicast route according to the messages; then the VPLS VSI forwards multicast packets according to the L2 multicast route configured. With the PIM Snooping function, the VSI may forward multicast packets precisely so that the bandwidth of an MPLS or IP network can be effectively saved and that the multicast replication pressure between PEs in the VPLS network and VC pseudowires in the VSI can be reduced. | 08-28-2008 |
20090028148 | Method And System For Improving Quality Of Communication Based On Label Distribution Protocol - A method and system for improving a quality of communication based on a label distribution protocol is provided. The method includes the following: When a local label switching router (LSR) finds out a change of a route at an upstream node in a multicast label switching path (LSP), it calculates and sets up a new optimized multicast LSP according to the label distribution protocol (LDP), and delays to send a withdraw request to the upstream node in the former multicast LSP. An interruption of the data stream in the multicast LSP reconstruction procedures can be avoided or reduced, so that the loss of data packets caused by the multicast LSP adjustment is reduced, and the quality of communication of the multicast is improved. | 01-29-2009 |
20090201834 | MULTI-ADDRESS SPACE MOBILE NETWORK ARCHITECTURE, METHOD FOR REGISTERING HOST INFORMATION, AND METHOD FOR SENDING DATA - A multi-address space mobile network architecture is disclosed, in which edge networks (ENs) are connected to a core network (CN) through core edge routers (CERs). A distributed hash table (DHT) set in the CN is adapted to not only store or update a mapping relation between a CER ID and CER location information in the CN, but also receive registration information sent from a host through the CER, and store or update mapping relations between a host ID host identifier (HI) and the CER ID and between the HI and host location information. A method for registering host information includes the steps as follows. The host acquires routable host location information in an EN to which the host currently added and information of the CER in the EN. The host sends registration information to the CN through the CER in the EN. Further, a method for sending data is described. The network architecture and methods of the present invention may improve update and query efficiency of the registration information from the host. | 08-13-2009 |
20090213855 | METHOD AND SWITCH FOR IMPLEMENTING INTERNET GROUP MANAGEMENT PROTOCOL SNOOPING - A method and switch for Internet Group Management Protocol (IGMP) snooping are disclosed. The method includes: configuring, by a switch, a router interface listed in an IGMP snooping table; configuring, by the switch, a multicast forwarding table entry and a corresponding outgoing interface list; and configuring, by the switch, interfaces which are adjacent to switches in the outgoing interface list. The advantage of the invention is the rapid recovery of the multicast data packets forwarding in the loop network when the network topology of the Layer Two loop network changes. | 08-27-2009 |
20090238188 | METHOD AND DEVICE FOR FORWARDING INFORMATION - An information forwarding method includes obtaining data information to be forwarded which carries a route indicator indicating a destination edge network, obtaining route information to a border router in the destination edge network according to the route indicator, and sending the data information to the border router in the destination edge network for forwarding. An information forwarding device is also provided. | 09-24-2009 |
20090257439 | METHOD AND DEVICE FOR ADVERTISING ROUTING INFORMATION AND METHOD AND SYSTEM FOR IMPLEMENTING PACKET ROUTING - The present disclosure discloses a method and device for advertising routing information and a method and system for implementing packet routing. The method for advertising routing information includes a routing information advertising device that obtains its address information; the routing information advertising device adds the address information to routing information to advertise; and the routing information advertising device advertises the routing information that carries the address information. With the technical solution of the present disclosure, the number of routing tables in a backbone network may be greatly reduced. This minimizes the rise of router costs and effectively avoids slower route convergence. In addition, a router in the backbone network can dynamically obtain address information of a core router that advertises an aggregate prefix, such that it may be easier to implement registration, update and query the mapping between a more detailed address prefix and a border router. | 10-15-2009 |
20100316054 | METHOD, SYSTEM AND APPARATUS FOR SENDING MAPPING INFORMATION - A method, system, and apparatus for sending mapping information are disclosed. The method includes the following steps: An endpoint searches a mapping server to obtain Egress Tunnel Router (ETR) information used for forwarding a data packet sent by the endpoint in a transit network; and the endpoint adds the ETR information to the data packet and sends the data packet to an Ingress Tunnel Router (ITR). With the present invention, the ITR does not need to search for Routing Locator (RLOC) information or Autonomous System Number (AS No.) information, the pressure of searching for mapping information on the ITR is relieved, the problems such as forwarding performance deterioration and packet loss caused by ITR overload are avoided, and the risks of Distributed Denial of Service (DDOS) attacks are reduced. | 12-16-2010 |
20100329153 | METHOD AND DEVICE FOR INSTALLING AND DISTRIBUTING ROUTES - A method and device for installing and distributing routes are disclosed. The routes are classified and installed respectively according to route types. Therefore, the distributed storage of a Forwarding Information Base (FIB) is automated, massive manual configuration work is avoided, and the problem of oversized FIB of the router as a result of fast growth of the routing table is solved. | 12-30-2010 |
20110051738 | METHOD, SYSTEM AND DEVICE FOR MAINTAINING ROUTES - A method, system, and device for maintaining routes are provided. A communications network includes multiple point of presence (PoP) groups, where each of the PoP groups includes one or more PoP nodes. PoP nodes within the same PoP group issue routing information of the same super prefix. PoP nodes within different PoP groups issue routing information of different super prefixes. The method further includes the following steps. A PoP node acquires routing information of a detailed prefix covered by a super prefix issued by the PoP node and synchronizes the routing information of the detailed prefix with other PoP nodes within the same PoP group. The method, system, and device reduce flow of data forwarded by each PoP node. | 03-03-2011 |
20110072157 | METHOD, DEVICE, AND COMMUNICATIONS SYSTEM FOR MANAGING QUERYING MAPPING INFORMATION - The present invention discloses a method, a device, and a communications system for managing and querying mapping information. The method for managing mapping information includes: signing a mapping information pair by using a private key of a certificate corresponding to a prefix in the mapping information pair to generate a signed mapping pair; submitting the signed mapping pair to a registration agent (RA) in a transit network; and sharing, by the RA, the signed mapping pair with other RAs through data synchronization. With the mapping information management method, data transmission method, devices and communications system provided by the present invention, the security of mapping information in registration, query, and synchronization operations is guaranteed. | 03-24-2011 |
20110085554 | Method and Device for Maintaining Routes - A method, system, and device for maintaining routes are provided. A communications network includes multiple point of presence (PoP) groups, where each of the PoP groups includes one or more PoP nodes. PoP nodes within the same PoP group issue routing information of the same super prefix. PoP nodes within different PoP groups issue routing information of different super prefixes. The method further includes the following steps. A PoP node acquires routing information of a detailed prefix covered by a super prefix issued by the PoP node and synchronizes the routing information of the detailed prefix with other PoP nodes within the same PoP group. The method, system, and device reduce flow of data forwarded by each PoP node. | 04-14-2011 |