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Method and device for establishing BFD (Bidirectional Forwarding Detection) session

A technology of session establishment and label forwarding path, which is applied in the field of BFD session establishment method and device, can solve the problems of low efficiency, reduce the efficiency of detection label forwarding path, and reduce the efficiency of forwarding FEC, so as to reduce the number of packets and save BFD session resources , the effect of improving efficiency

Active Publication Date: 2017-09-12
MAIPU COMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In an existing multiprotocol label switching (Multiprotocol Label Switching, MPLS) network, when it is necessary to forward different types of forwarding equivalence classes (Forwarding Equivalence Class, FEC) on the same forwarding path between the source forwarding device and the destination forwarding device , the forwarding device needs to configure bidirectional forwarding detection (Bidirectional Forwarding Detection, BFD) sessions for different types of FECs, and repeatedly check whether the same label forwarding path is normal, resulting in low efficiency of the forwarding device in detecting the label forwarding path, thereby reducing the Efficiency of forwarding FEC on the forwarding path
[0004] Moreover, when the number of FEC types forwarded by the forwarding device exceeds the number of BFD sessions supported by the forwarding device, the forwarding device does not have enough BFD session resources to provide label forwarding path detection services for the newly added FEC, which also reduces the detection rate of label forwarding. Path efficiency, thus reducing the efficiency of forwarding FEC on the label forwarding path

Method used

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  • Method and device for establishing BFD (Bidirectional Forwarding Detection) session
  • Method and device for establishing BFD (Bidirectional Forwarding Detection) session
  • Method and device for establishing BFD (Bidirectional Forwarding Detection) session

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0035] The embodiment of this application provides a method for establishing a BFD session, such as figure 1 As shown, the method specifically includes:

[0036] Step 101 , configure a bidirectional forwarding detection BFD session for a label forwarding path corresponding to a designated forwarding equivalence class FEC.

[0037] Among them, the BFD session is used to detect whether the label forwarding path is normal.

[0038] The label forwarding path may be a physical path in the MPLS net...

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Abstract

The application discloses a method and a device for establishing a BFD (Bidirectional Forwarding Detection) session, and relates to the technical field of communication networks. The technical problem that the efficiency of forwarding an FEC (Forwarding Equivalence Class) in a label forwarding path is relatively low can be solved. The method comprises the following steps of carrying out BFD session configuration on the label forwarding path corresponding to a designated FEC, and forming the BFD session by utilizing the BFD session configuration; forwarding other each FEC on the label forwarding path, and being capable of establishing an incidence relation with the BFD session; by utilizing the BFD session, detecting whether the label forwarding path is normal or not. According to the scheme provided by the application, the method is applicable to the improvement of the efficiency of forwarding the FEC on the label forwarding path.

Description

technical field [0001] The present application relates to the technical field of network communication, and in particular to a method and device for establishing a BFD session. Background technique [0002] In order to ensure the reliability of network communication, it is usually necessary to establish a main path and a backup path between two forwarding devices such as routers and perform detection. When a failure of the main path is detected, it is immediately switched to the backup path to quickly restore network communication. [0003] In an existing multiprotocol label switching (Multiprotocol Label Switching, MPLS) network, when it is necessary to forward different types of forwarding equivalence classes (Forwarding Equivalence Class, FEC) on the same forwarding path between the source forwarding device and the destination forwarding device , the forwarding device needs to configure bidirectional forwarding detection (Bidirectional Forwarding Detection, BFD) sessions ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/723H04L45/50
CPCH04L43/0811H04L45/50
Inventor 沈波韦艳秋
Owner MAIPU COMM TECH CO LTD
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