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SRv6 Endpoint fault protection method

A fault protection and fault technology, applied in the network field, can solve the problems of reducing the processing efficiency of nodes and increasing the processing time of upstream nodes, namely proxy forwarding nodes, etc.

Active Publication Date: 2021-09-07
BEIJING UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0008] The present invention is used to solve the problem that the current SRv6 Endpoint fault protection method will increase the processing time of the upstream node, that is, the proxy forwarding node and reduce the processing efficiency of the node

Method used

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  • SRv6 Endpoint fault protection method

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Embodiment Construction

[0034] The content of each part involved in the present invention and specific application scenarios are introduced in detail below.

[0035] (1) Flags field definition

[0036] Segment Routing Header (SRH) is used to encapsulate SRv6 and SID, figure 1 The data format of SRH is given.

[0037] The inventive method designs a new Flags field, and the seventh bit of the Flags field is set as the t-flag position, i.e. twice flag, which is used to judge the SID additional behavior, figure 2 The format of the Flags field is given.

[0038] (2) SID additional behavior

[0039] In order to realize the function of bypassing the failed Endpoint node, the present invention newly defines an additional behavior, which is to subtract two Segments (Minus Two Segment, MTS).

[0040] MTS refers to the action of subtracting 2 from Segments Left at the Endpoint node. MTS needs to be used in conjunction with End, End.X, and End.T, and is an additional action attached to them. The standard E...

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Abstract

The invention belongs to the technical field of networks, and particularly relates to an SRv6 Endpoint fault protection method, which is used for solving the problems that the processing time of an upstream node, namely a proxy forwarding node, is increased and the processing efficiency of the node is reduced in the existing SRv6 Endpoint fault protection method. According to the method, the reduction of the processing time of the proxy forwarding node is considered, after the proxy forwarding node only executes a routing table searching operation once, if a table item exists, a repair path SID is packaged, a data packet is guided to a next-hop backup node, and the node executes an additional behavior of the SID, bypasses a fault Endpoint node and forwards the data packet. According to the method, a new Flags field in the SRH is designed and used for judging the SID additional behavior, a new SID additional behavior MTS is designed, and a selection mechanism of a next-hop backup node is designed, so that a fault Endpoint node can be bypassed.

Description

technical field [0001] The invention belongs to the field of network technology, in particular to an SRv6 Endpoint fault protection method. Background technique [0002] With the advent of the 5G and cloud era, the process of global informatization has led to rapid and vigorous development of Internet applications. Rich service applications require operators' networks to have more powerful programmability. As the cornerstone of global Internet development, the Internet Protocol (Internet Protocol, IP) network continues to use technological innovation and continuous evolution to meet challenges. [0003] Segment Routing (SR) is a source routing technology. The source node specifies the path for the application message, and converts the path into an ordered segment list (Segment List) and encapsulates it in the message header. The intermediate nodes of the path only need to forward according to the path specified in the packet header. Such a segment is called a "Segment" and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/703H04L12/707H04L12/721H04L45/28H04L45/24
CPCH04L45/34H04L45/28H04L45/22
Inventor 霍如王硕刘江黄韬刘韵洁
Owner BEIJING UNIV OF TECH
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