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Route processing method and route forwarding device

A technology of forwarding equipment and processing methods, which is applied in digital transmission systems, electrical components, transmission systems, etc., and can solve problems such as large bandwidth and occupation

Active Publication Date: 2015-10-21
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the local router’s outbound policy or protocol import (introduction of routes discovered by other routing protocols) changes to trigger a route update, the local router still needs to filter all local routing information and its routing attributes through the new outbound policy. Resend to the peer at the opposite end, thus occupying a large bandwidth

Method used

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  • Route processing method and route forwarding device
  • Route processing method and route forwarding device
  • Route processing method and route forwarding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 It is a processing flowchart of the route processing method according to Embodiment 1 of the present invention, and the method can be applied in BGP, including: BGP-4 and IPv6 BGP. This method can be executed by any routing and forwarding device (hereinafter referred to as the first routing and forwarding device) in the network supporting BGP. The routing and forwarding device can be a router or other device, which is not limited in the present invention. like figure 1 As shown, the method includes the following steps:

[0026] Step S102, when it is necessary to update the routing information published by itself, the first routing forwarding device compares the first routing information stored locally with the second routing information, wherein the first routing information is the second routing information that has been released to the BGP peer. Forwarding the routing information of the device, the second routing information is the routing information to be...

Embodiment 2

[0039] The method of embodiment one is described in detail below, as figure 2 As shown, the specific processing flow includes the following steps S202~S206:

[0040] Step S202, the first routing and forwarding device saves the routing information that has been filtered out by policies and released to BGP peers (collectively referred to as the second routing and forwarding device), that is, the first routing information (equivalent to the peer configured on the second routing and forwarding device) The keep-all-routes command locally saves the original routing information received from the first routing forwarding device), which is recorded as Send1, and Send1 can contain one or more routes (including routing prefixes and attribute values), when the local When the outbound policy or protocol introduction changes and the published routing information needs to be updated, save the updated outbound policy (if the outbound policy is changed, the current outbound policy is the new ...

Embodiment 3

[0075] For the methods in Embodiments 1 and 2, the embodiment of the present invention provides a route forwarding device. The route forwarding device can support BGP and can be a router or other device, which is not limited in the present invention.

[0076] like Image 6 As shown, the following modules are included in the routing forwarding device: a comparison module 10 and a sending module 20, wherein:

[0077] The comparison module 10 is used to compare the first routing information stored locally with the second routing information when it is necessary to update the routing information released by the routing forwarding device, wherein the first routing information is the BGP peer-to-peer routing information that has been published to the routing forwarding device. The body is the routing information of the second routing forwarding device, and the second routing information is the routing information to be updated;

[0078] The sending module 20 is configured to instru...

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Abstract

The invention discloses a route processing method and route forwarding equipment. The method comprises the following steps of: when self-published route information needs to be updated, first route forwarding equipment compares locally-stored first route information with locally-stored second route information, wherein the first route information is published to a BGP (border gateway protocol) peer, i.e. second route forwarding equipment, and the second route information is to be updated; and according to a comparison result, the first route forwarding equipment indicates the second route forwarding equipment to update differences between the locally-stored first route information and the locally-stored second route information. According to the invention, the first route forwarding equipment does not need to send all route information which needs to be updated to all the peers when locally-stored strategy or protocol introduction is changed to trigger route update, and purposes of reducing message sending and reducing bandwidth occupation are realized.

Description

technical field [0001] The invention relates to the technical field of IP (Internet Protocol, Internet Protocol) routing, in particular to a routing processing method and routing forwarding equipment. Background technique [0002] BGP (Border Gateway Protocol, Border Gateway Protocol) is a dynamic routing protocol that can be used not only between different ASs (Autonomous Systems, autonomous systems) but also within the same AS. When BGP runs within the same AS, it is called IBGP (Internal BGP); when BGP runs between different ASs, it is called EBGP (External BGP). Among them, AS is a group of routers that have the same routing strategy and operate under the same technical management department. [0003] BGP defines the following five message types: [0004] Open (initial): The first message sent after the TCP connection is established, used for BGP peers (the router that sends the BGP message is called the BGP speaker (BGP Speaker), and the BGP speakers that exchange m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70
Inventor 王伟樊超
Owner XINHUASAN INFORMATION TECH CO LTD