Bidirectional forwarding detection method in multi-hop link on basis of BFD

A technology of bidirectional forwarding detection and chain skipping, which is applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as the lack of BFD protocol, and achieve the effects of reducing configuration difficulty, simplifying configuration, and ensuring connectivity

Inactive Publication Date: 2014-01-01
北京神州数码云科信息技术有限公司 +1
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Problems solved by technology

Because the BFD protocol itself does not have a neighbor discovery mechanism, and the three-way handshake process of BFD control packets requires that the BFD protocols of both parties in the session must know the neighbors of the upper-layer application that is the peer end of the session. Therefore, in the process of establishing a BFD session, only It can rely on the upper-layer application to notify the lower-layer BFD protocol of the necessary neighbor information

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  • Bidirectional forwarding detection method in multi-hop link on basis of BFD
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  • Bidirectional forwarding detection method in multi-hop link on basis of BFD

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[0039] The present invention will be described in more detail and complete below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

[0040] Bidirectional Forwarding Detection (BFD, Bidirectional Forwarding Detection) is a general international standard protocol, which can quickly realize the detection of bidirectional paths between two routing devices. After BFD establishes a session connection between the local routing device and the remote routing device, it checks the connection status of the link based on the established session connection. BFD implements link detection in two ways, one is the control packet mode, and the other is the...

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Abstract

The invention relates to the technical field of computer network communication, in particular to a bidirectional forwarding detection method in a multi-hop link on basis of BFD. The method includes the steps that routing equipment on the link is configured according to BFD opposite end neighbor information; configuration includes the steps of configuring a target address of the routing equipment as a network segment address of a target network, configuring the next hop of the routing equipment as an opposite end neighbor building a BFD conversation with a home terminal, and identifying the next hop of the routing equipment as a BFD type; BFD conversation connection is built between BFD home terminal routing equipment and opposite end routing equipment; according to the built BFD conversation connection, the connection condition of links between the home terminal routing equipment and the opposite end routing equipment is detected by means of a message controlling method. By means of the technical scheme, BFD configuration of the links is simplified, and meanwhile achievement difficulty of BFD functions is reduced.

Description

technical field [0001] The invention relates to the technical field of computer network communication, in particular to a BFD-based bidirectional forwarding detection method in a multi-hop link. Background technique [0002] Bidirectional Forwarding Detection (BFD, Bidirectional Forwarding Detection) is an international standard protocol. BFD has nothing to do with media and protocols. It can be various upper-layer protocols, such as routing protocols, Multi-Protocol Label Switching (MPLS, Multi-Protocol Label Switching), etc. , providing a fast fault detection mechanism to realize fast detection of bidirectional path faults between two routing devices. Following the basic provisions of the BFD protocol standard, the establishment of a BFD session is established through the three-way handshake mechanism of the BFD control message. The specific process includes: the neighbors of the upper-layer application send BFD control messages to each other through the respectively enabl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L29/06
Inventor 张少太董建军
Owner 北京神州数码云科信息技术有限公司
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