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Method, equipment and system for transferring routing information

A routing and equipment technology, applied in the field of communication networks, can solve problems affecting normal business, loss of forwarding information, affecting normal business, etc., and achieve the effect of reducing workload

Active Publication Date: 2011-03-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When using the first method to migrate VPN routes, it is necessary to delete the VPN routes of the BGP process and then reconfigure them. This will cause the loss of forwarding information, affect normal services during the migration process, and require repeated configurations, which increases the User-configured workload;
[0008] Using the second method still needs to delete the route of the source BGP process during the migration process, resulting in the loss of forwarding information and affecting normal business during the migration process

Method used

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  • Method, equipment and system for transferring routing information
  • Method, equipment and system for transferring routing information

Examples

Experimental program
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Embodiment 1

[0022] like figure 1 As shown, the embodiment of the present invention provides a method for migrating routing information, including:

[0023] When it is necessary to migrate the routing information containing the routing identifier RD that needs to be migrated to the second BGP process processed by the first Border Gateway Protocol BGP process, the following steps are performed:

[0024] 101: Modify the association relationship between the RD to be migrated and the first BGP process to the association relationship between the RD to be migrated and the second BGP process;

[0025] 102: Enable graceful restart of the BGP process of the neighbor device;

[0026] 103: Receive the routing information containing the RD that needs to be migrated sent by the neighbor device after its BGP process gracefully restarts;

[0027] 104: Forward the received routing information including the RD that needs to be migrated to the second BGP process;

[0028] 105: After migrating the routing...

Embodiment 2

[0032] like figure 2 As shown, an application scenario of the method for migrating routing information provided by the embodiment of the present invention. The local device exchanges information with neighbor devices (not shown). The local device saves the first BGP process, the second BGP process, and the association relationship information between the RD and the BGP process. Wherein, the first BGP process of the local device is logically connected to the BGP process Peer1 of the neighbor device, and the second BGP process of the local device is logically connected to the BGP process Peer2 of the neighbor device.

[0033] In this embodiment, the first BGP process, the second BGP process, and the association relationship information between the RD and the BGP process are stored on the local device, and the association relationship information is that different RDs correspond to the first BGP process or the second BGP process respectively information, as shown in Table 1, t...

Embodiment 3

[0062] like Figure 5 As shown, the embodiment of the present invention provides a device for migrating routing information, which specifically includes:

[0063] The detection trigger module 501 is configured to detect that the routing information processed by the first BGP process exceeds a preset threshold, and select the second BGP process to process the routing information containing the RD that needs to be migrated;

[0064] Or the receiving triggering module 502 is configured to receive a triggering command, where the triggering command is used to instruct to migrate the routing information including the RD to be migrated from the first BGP process to the second BGP process.

[0065] The modifying module 503 is configured to, when it is necessary to migrate the routing information containing the RD to be migrated processed by the first BGP process to the second BGP process for processing: modify the association relationship between the RD to be migrated and the first BG...

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Abstract

The invention discloses a method and equipment for transferring routing information, which belong to the field of communication networks. The method comprises: changing the association relationship between a route distinguisher (RD) to be transferred and a first border gateway protocol (BGP) process into the association relationship between the RD to be transferred and a second BGP process; after the change is accomplished, performing the graceful restart of the BGP process of neighbor equipment; receiving routing information which contains the RD to be transferred and sent by the neighbor equipment after the graceful restart of the BGP process; and forwarding the received routing information which contains the RD to be transferred to the second BGP process. In the process of transferring routing information, the continuous service forwarding is guaranteed.

Description

technical field [0001] The invention relates to the field of communication networks, in particular to a method, device and system for migrating routing information. Background technique [0002] In a VPN (Virtual Private Network, virtual private network), address space independence is realized through an RD (Route Distinguisher, routing identifier). The current VPN business is developing rapidly, and the market has put forward higher and higher requirements for the VPN performance of high-end routers, mainly reflected in the requirements for the number of VRF (Virtual Routing Forwarding, routing forwarding table) and the number of private network routes. As the number of VRFs increases and VPN routes increase, the BGP (Border Gateway Protocol, Border Gateway Protocol) process that is responsible for processing these VPN routes will be very burdened, so it is necessary to separate VPN routes from a BGP process and migrate to other BGP processes, thereby reducing the load of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/46H04L29/06
Inventor 陈双龙张立新
Owner HUAWEI TECH CO LTD
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