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Message forwarding method and message forwarding device based on SRv6-TE path

A packet forwarding and srv6-te technology, applied in the field of packet forwarding methods and packet forwarding devices based on SRv6-TE paths, can solve problems such as low bearer efficiency, improve bearer efficiency, simplify path representation, and compress The effect of traffic volume

Active Publication Date: 2021-06-22
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the above defects or improvement needs of the prior art, the present invention provides a packet forwarding method and packet forwarding device based on an SRv6-TE path. The identification forms the SRv6-TE forwarding path, which can further improve the path compression efficiency of SRv6 SRH without affecting the network scale, reduce the packet redundancy rate, and improve the carrying efficiency of SRv6. Technical problem with very low bearing efficiency

Method used

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  • Message forwarding method and message forwarding device based on SRv6-TE path
  • Message forwarding method and message forwarding device based on SRv6-TE path
  • Message forwarding method and message forwarding device based on SRv6-TE path

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Embodiment 1

[0055] refer to Figure 1 ~ Figure 3 , the present embodiment provides a method for forwarding packets based on an SRv6-TE path, the method comprising the following steps:

[0056] Step 10: The control module pre-installs the SPT default route, SPT node route and SRv6-TE forwarding path into the forwarding module.

[0057] Wherein, SPT default routing and SPT node routing are two specific types of SPT (Sub-Path Terminator, sub-path terminator) routing, which is a routing type in the IPV6 routing table defined in this embodiment, SPT routing and OSPFv3 The routing types are similar, and they are all used on the forwarding plane of the device to match the characteristics of IPv6 packets and correctly complete customer traffic processing.

[0058] Among them, the SRv6-TE forwarding path is an SRv6-TE constrained path that can be recognized by the forwarding chip or forwarding software, and is an expression form that is convenient for machine processing. The SRv6-TE forwarding p...

Embodiment 2

[0109] refer to Figure 8 This embodiment provides a message forwarding device, the message forwarding device includes a forwarding module and a control module, and the control module and the forwarding module cooperate with each other to complete the message forwarding method described in Embodiment 1.

[0110] Wherein, the control module is used to pre-install the SPT default route, the SPT node route and the SRv6-TE forwarding path into the forwarding module.

[0111] The forwarding module is used to receive the SRv6 traffic message carrying the SRv6-TE forwarding path, analyze the SRv6-TE forwarding path, and obtain multiple segment list members;

[0112] The forwarding module is also used to analyze the members of the current segment list to obtain the SRv6 domain identifier and the next waypoint of the current SRv6 domain, and form an IPv6 destination address according to the SRv6 domain identifier and the next waypoint; if the The IPv6 destination address matches the S...

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Abstract

The invention discloses a message forwarding method and a message forwarding device based on an SRv6-TE path. In the method, a control module installs an SPT default route, an SPT node route and an SRv6-TE forwarding path into a forwarding module in advance; the forwarding module receives an SRv6 flow message carrying an SRv6-TE forwarding path, and analyzes the SRv6-TE forwarding path to obtain a plurality of segmented list members; the forwarding module analyzes the members of the current segment list to obtain an SRv6 domain identifier of the current SRv6 domain and a next waypoint, and forms an IPv6 destination address according to the SRv6 domain identifier and the next waypoint. The SRv6-TE forwarding path is formed by using the SRv6 domain identifier, the SRv6 node identifier and the SRv6 adjacent identifier which represent the topology, the path compression efficiency of the SRH of the SRv6 can be improved under the condition that the network scale is not influenced, and the message redundancy rate is reduced.

Description

technical field [0001] The invention belongs to the field of data communication, and more specifically relates to a message forwarding method and a message forwarding device based on an SRv6-TE path. Background technique [0002] Segment Routing SR (Segment Routing, abbreviated as SR) technology is a tunneling technology based on source routing forwarding mode, by adding a segment list SL (SegmentList, abbreviated as SID) composed of SID (Segment ID, abbreviated as SID) in the message For SL) related information, there is no need to maintain the state information of each path on the intermediate node. [0003] When SR is implemented, the source node encapsulates the message to be sent on the path information that the message passes through. The path information includes the segment identifier SID (Segment Identifier, abbreviated as SID) of the SR node in the message and the routing order of the node. . When the message passes through the SR node along the transmission path...

Claims

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Application Information

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IPC IPC(8): H04L12/721H04L12/741H04L45/74
CPCH04L45/34H04L45/745
Inventor 兰光华
Owner FENGHUO COMM SCI & TECH CO LTD
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