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Method and device for routing filter based on BGP protocol

A routing, one-way technology, applied in the field of communication, can solve the problem that ORF cannot be filtered, and achieve the effect of avoiding the sending of unnecessary routes, reducing the sending of unnecessary routes, and simplifying configuration

Inactive Publication Date: 2008-04-02
HUAWEI TECH CO LTD
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Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide a method and device for filtering outgoing routes based on the BGP protocol. The present invention performs outgoing routing filtering on routes according to the Nexthop information of the routing, which is a good supplement to the existing ORF , can solve the problem that the existing ORF cannot be filtered according to the routing Nexthop, greatly simplifies the configuration, and also simplifies the complexity of BGP in ORF processing

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  • Method and device for routing filter based on BGP protocol
  • Method and device for routing filter based on BGP protocol
  • Method and device for routing filter based on BGP protocol

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[0043]The present invention provides a method and device for filtering outbound routes based on BGP protocol. In this solution, BGP Peer formulates routing policies about Nexthop as needed, and then sends the routing policies to its relevant BGP Peers, and its relevant According to the received Nexthop filter conditions, the BGP Peer only sends the routes that meet the Nexthop filter conditions to the above-mentioned BGPPeer party when sending routes to it.

[0044] Supporting the ORF based on Nexthop is a new capability for BGP. To realize the above functions, the present invention extends the BGP protocol accordingly: it is necessary to extend the BGP protocol to support the capability negotiation of Nexthop ORF;

[0045] Specifically, we can add a new outbound route filtering ORF type based on the original BGP protocol, that is, the next hop outbound route filtering type (Nexthop ORF). Authority; IANA) allocation, the recommended value is 66;

[0046] At the same time, in ...

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Abstract

The present invention relates to a method and an apparatus for filtering the out route based on BGP protocol. The kernel of the present invention is to carry the next hop outbound route filter information in BGP protocol, and to implement outbound route filter (ORF) ability negotiation between BGP Peer; then, to implement outbound filter processing according to the negotiatory result of ORF ability between the BGP Peer. By means of the present invention, the problem that the existing ORF can not filter according to the next hop of route, simplifying configuration greatly as well as complexity of BGP during the ORF processing.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method and device for outbound route filtering based on BGP protocol. Background technique [0002] The Border Gateway Protocol (Border Gateway Protocol; BGP) is currently widely deployed in today's Internet networks, and is used to transmit a large amount of routing information between autonomous domains (Autonomous Systems; AS) and within the AS. The transmission of routing information needs to be connected between routers through the BGP protocol first. Two routers establishing a BGP connection are each other’s neighbors (BGPPeer). The TCP protocol is used as the transport layer protocol between BGP peers. The default port number is 179. Use Used to carry various message information of BGP: including update UPDATE, keep alive KEEPALIVE, etc.; when there are a large number of routes transmitted between BGP peers, some neighbors think that the connection between them has fai...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56
CPCH04L45/02H04L45/033
Inventor 陈国义
Owner HUAWEI TECH CO LTD
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