Message transmission method and device

Abstract

The present invention provides a message transmission method and device. The method includes: a first network device receives a first message sent by a second network device through an inter-system cascading port, and adds a first message to the first message. The remote RMT identifier is used to obtain the second message; the first network device judges whether it is necessary to configure the Perform pruning processing on the second message; if the sending port of the second message is a multi-homing port, the first network device performs pruning processing on the second message; if the second message The sending port is a single-homing port, the first network device deletes the first RMT identifier in the second message, and sends the first message through the single-homing port after obtaining the first message ; In this way, packets can be forwarded with high reliability in a multi-homing scenario.

Description

technical field [0001] The invention relates to communication technology, in particular to a message transmission method and device. Background technique [0002] With the development of computer technology and communication technology, the network structure in practical applications is becoming more and more complex, which may cause a switch or router to receive the routing information sent by itself, resulting in the generation of routing rings and the waste of link bandwidth resources. [0003] In order to avoid the generation of routing loops, in the prior art, the three-layer routing adopts the routing poison reversal mode, the multi-protocol label switching (English: Multiprotocol Label Switching, referred to as: MPLS) adopts the MPLS label mode, and multi-link transparent interconnection (English: Transparent Interconnection of Lots of Links (TRILL) adopts a virtual nickname (nickname) method to realize network horizontal segmentation. Among them, the principle of ne...

AI Technical Summary

Problems solved by technology

figure 1 It is a schematic diagram of network connection in a multi-homing scenario, such as figure 1 As shown, when the internal network is interconnected with the external public network, a switch or router on the internal network is connected to gateway 1 and gateway 2 respectively through two links (that is, dual-homing access to gateway 1 and gateway 2). The principle of network split horizon in the technology can prevent gateway 1 from sending routing information back to the switch or router, but the switch or router may still receive the routing information sent by itself to gateway 1 through gateway 2, which will still cause a routing loop generation and waste of link bandwidth resources

It can be seen that the principle of network split horizon in the prior art cannot avoid the occurrence of routing loops in multi-homing scenarios.

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