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Method, system and device for synchronizing BGP route

A border gateway protocol and routing technology, which is used in transmission systems, digital transmission systems, data exchange networks, etc.

Active Publication Date: 2012-09-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] To sum up, in the application scenario of BGP continuous reconstruction, BGP route synchronization in the prior art has slow speed, low efficiency, and affects peer data forwarding And other issues

Method used

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  • Method, system and device for synchronizing BGP route
  • Method, system and device for synchronizing BGP route

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0060] Embodiment 1: A method for synchronizing BGP routes after a handover process between groups of BGP peers.

[0061] In this embodiment, the above method for BGP route synchronization can be used after the inter-group handover process of BGP peers, so as to realize BGP route synchronization after the inter-group handover of BGP peers. For simplicity of description, in this embodiment, the figure 1 The shown topology is taken as an example, and the BGP route synchronization method after inter-group handover in this embodiment is introduced.

[0062] Such as figure 1 As shown, when Peer1 switches from GroupA to GroupB, the egress policy adopted by Peer1 is also changed from the egress policy of GroupA to the egress policy of GroupB after the intergroup switchover is completed. Therefore, Peer1 needs to re-synchronize routes with its peer Peer2. In this embodiment, Peer1 only needs to traverse RouteSetB to complete route synchronization with peer Peer2.

[0063] image 3...

Embodiment 2

[0075] Embodiment 2: A method for synchronizing BGP routes in the process of TCP hot backup.

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Abstract

The invention discloses a method for route synchronization in a border gateway protocol. The method comprises the following steps: adding aging identification information for routing information when a starting advice message is received, wherein the routing information is routing information received before the starting advice message is received and the routing information is sent by a node forsending the starting advice message; receiving the routing information and removing aging identification information in the routing information with the aging identification information when the routing information received is identical with the routing information with aging identification information; storing the routing information received when the routing information received is not identical with the routing information with the aging identification information; and deleting the routing information with the aging identification information when an ending advice message is received. The invention further discloses system and a device for the route synchronization in the border gateway protocol. By using the method, the system and the device, the BGP route synchronization among nodes can be achieved under the situation of uninterrupted BGP session among the nodes.

Description

technical field [0001] The present invention relates to Border Gateway Protocol (BGP, Border Gateway Protocol), in particular to a method, system and device for routing synchronization of the Border Gateway Protocol. Background technique [0002] With the development of the network, users put forward higher and higher requirements for the reliability of the network, and the non-stop forwarding (NSF, None Stop Forwarding) technology is an important high-reliability technology. NSF technology can still ensure the normal execution of data forwarding when the control plane of the router fails, thereby protecting key services on the network from being affected. At present, NSF technology is being more and more widely used. [0003] In NSF technology, all related network protocols are required to support Graceful Restart (GR, Graceful Restart) technology, so as to ensure the normal forwarding of data during the restart of the routing protocol and the re-synchronization of the rou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/56
CPCH04L45/04H04L45/00H04L45/02H04L45/033
Inventor 庄顺万倪辉曾晴陈双龙张昕杨宏杰
Owner HUAWEI TECH CO LTD
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