Method for forwarding message in SR network, device thereof and system

A technology for network equipment and message forwarding, which is applied in the field of communication and can solve problems such as the length of the segment list is too long and the efficiency of message transmission is reduced.

Pending Publication Date: 2021-03-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides a method, device and system for forwarding messages, which are used to solve the technical problem that the length of the segment list is too long to reduce the efficiency of message transmission in the SR network

Method used

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  • Method for forwarding message in SR network, device thereof and system
  • Method for forwarding message in SR network, device thereof and system
  • Method for forwarding message in SR network, device thereof and system

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Embodiment Construction

[0079] Embodiments of the present application are described below in conjunction with the accompanying drawings.

[0080] figure 1 A possible application scenario of the embodiment of the present application is shown. The network in this application scenario includes network devices, specifically: network device S, network device 1, network device 2, network device 3, network device 4, network device 5, network device 6, network device 7, network device 8, network Device 9, Network Device 10, Network Device 11, and Network Device 12. These network devices can be switches, routers, or repeaters. Wherein, the network device S may be an ingress device of the network. Network devices can also include controllers, figure 1 not shown in The controller can be connected with network devices 1 to 10 . The controller can generate a segment list corresponding to the forwarding path of the message, and send the segment list to the network ingress device. The controller can send con...

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PUM

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Abstract

The invention discloses a method for forwarding message. The method comprises the steps that a message is received, a first message header of the message comprises a segment list used for forwarding the message, the segment list comprises a plurality of identifiers arranged in sequence, each identifier in the identifiers corresponds to a network device or a link, the list comprises a first elementwith the length of 128 bits, wherein the first element comprises at least two adjacent identifiers in the plurality of identifiers, and the first message comprises a first pointer; the position of afirst identifier in the first element is determined according to the value of the first pointer, wherein the first identifier is one of the at least two identifiers; at least one identifier starting from the first identifier is copied into a second message header of the first message to generate a second message; and a second message is sent. Through the method, the length of the segment list canbe reduced, and the message transmission efficiency is improved.

Description

technical field [0001] The present application relates to the field of communications, and in particular to a method, network device and system for forwarding packets in a segment routing (segment routing, SR) network. Background technique [0002] SR is a protocol designed based on the concept of source routing to forward data packets on the network. It supports the explicit designation of data packet forwarding paths at the source node. When the SR is deployed on the sixth version of the Internet Protocol Version 6 (Internet Protocol Version 6, IPv6) data plane, it is called IPv6 segment routing (SRv6). When the SR is deployed on the Multiprotocol Label Switching (Multiple Protocol Label Switch, MPLS) data plane When it is used, it is called SR-MPLS. Among them, SRv6 extends a segment routing header (segment routing header, SRH) on the basis of IPv6. [0003] The SRH includes a segment list (segment list), and the segment list includes multiple segment identifications (s...

Claims

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Application Information

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IPC IPC(8): H04L12/721H04L12/723H04L12/741H04L45/50H04L45/74
CPCH04L45/34H04L45/50H04L45/54H04L45/74
Inventor胡志波李呈
OwnerHUAWEI TECH CO LTD