Fault protection method, node and storage medium

A fault protection and node technology, applied in the field of communication, can solve problems such as message forwarding switching, packet loss, and poor network reliability, and achieve the effect of improving network reliability

Active Publication Date: 2020-09-22
HUAWEI TECH CO LTD
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  • Summary
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Problems solved by technology

[0004] However, when the nodes in the path are in two or more IGP domains, each two IGP domains include the active inter-domain node and the standby inter-domain node, and the route of one IGP domain is preferentially routed Notify to another IGP domain. When the primary cross-domain node fails, the application of the TI-LFA algorithm can

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  • Fault protection method, node and storage medium
  • Fault protection method, node and storage medium
  • Fault protection method, node and storage medium

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[0030] Embodiments of the present application are described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Those of ordinary skill in the art know that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0031] The embodiment of the present application provides a fault protection method, node, and storage medium, and pre-calculates a path that does not pass through the main cross-domain node as a backup tunnel. The backup tunnel is a tunnel that strictly displays the path. When the main cross-domain node fails, Switch the service transmission path to the backup tunnel to improve network reliability. Each will be described in detail below.

[0032]The terms "first", "second" and the like in the sp...

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Abstract

The invention discloses a fault protection method. The method comprises the steps that a first node determines that a first cross-domain node has a node fault, wherein the first node is the head nodeof a segment routing best effort serving SR-BE tunnel, the SR-BE tunnel is a cross-domain tunnel passing through a first IGP domain and a second IGP domain, the SR-BE tunnel passes through the first cross-domain node, and the first cross-domain node is a cross-domain node of the first IGP domain and the second IGP domain; the first node switches the transmission path of the service from the SR-BEtunnel to a standby tunnel, the standby tunnel does not pass through the first cross-domain node, the standby tunnel is a cross-domain tunnel passing through the first IGP domain and the second IGP domain, and the standby tunnel is a tunnel strictly displaying the path. The embodiment of the invention further provides a corresponding node and a storage medium. According to the technical scheme, the path which does not pass through the main cross-domain node is calculated in advance to serve as the standby tunnel, the standby tunnel is a tunnel strictly displaying the path, when the main cross-domain node breaks down, the transmission path of the service is directly switched to the standby tunnel, and the network reliability is improved.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a fault protection method. Background technique [0002] Segment routing (SR) is a control plane that uses an interior gateway protocol (IGP) to transfer global or local multi-protocol label switching (MPLS) labels corresponding to SR routers. Methods. Segment routing best effort (SR-BE) is one of the segment routing methods. The optimal segment routing label-switched path (SR label) is calculated by IGP using the shortest path first (SPF) algorithm. switching path, SR LSP). [0003] Currently, for SR-BE, if the nodes in the path are in the same IGP domain, the alternate tunnel calculation method can be a topology-independent loop-free alternative path fast rerouting (topology Independent Loop-free-alternate algorithm, TI-LFA ) algorithm, TI-LFA algorithm calculates and expands P space, Q space, post-convergence shortest path tree according to the protecti...

Claims

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Application Information

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IPC IPC(8): H04L12/703H04L12/721H04L12/707H04L45/28H04L45/24
CPCH04L45/28H04L45/34H04L45/22H04L45/50H04L12/4633H04L45/04H04L45/12
Inventor 陈什陈小敏
Owner HUAWEI TECH CO LTD
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