Message transmission method and device

Abstract

The invention provides a message transmission method and device, and the method comprises the steps that first network equipment receives a first message sent by second network equipment through an inter-system cascading port, adds a first far-end RMT identification to the first message, and obtains a second message; the first network equipment judges whether to carry out the pruning of the second message or not according to the first RMT identification in the second message and the attribute of a transmission port of the second message; the first network equipment carries out the pruning of the second message if the transmission port of the second message is a multi-homing port; the first network equipment deletes the first RMT identification in the second message if the transmission port of the second message is a single-homing port, obtains the first message, and transmits the first message through the single-homing port. The method achieves the high-reliability forwarding of the message in a multi-homing scene.

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 method, the multi-protocol label switching (English: MultiprotocolLabelSwitching, MPLS) adopts the MPLS label method, and the multi-link transparent interconnection (English: TransparentInterconnectionofLotsofLinks, English: TransparentInterconnectionofLotsofLinks, TRILL) adopts a virtual nickname (nickname) method to realize network splitting. Among them...

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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