Message transmission method, backbone switch and access switch

Abstract

The present invention provides a message transmission method, a backbone switch and an access switch. The method includes: when the communication link between the first backbone switch and the second backbone switch fails, the first backbone switch The ingress switch sends a notification message, and the notification message is used to instruct the first access switch to split the first V-shaped communication link in the same trunk between the first backbone switch, the second backbone switch, and the first access switch into separate The second communication link and the third communication link in the two trunks; the first backbone switch receives the response message sent by the first access switch; the first backbone switch sends the first access switch to the first access switch through the second communication link according to the response message The switch sends the message, so that the first access switch forwards the message to the second backbone switch through the third communication link. The embodiment of the present invention can keep the normal operation of the SVF system without splitting when the peer-link fails, so as to keep the bandwidth of the SVF system unchanged.

Description

technical field [0001] The invention relates to the communication field, in particular to a message transmission method, a backbone switch and an access switch. Background technique [0002] The Super Virtual Fabric (English: Super Virtual Fabric, referred to as: SVF) system refers to the formation of multiple different types of equipment through a mixed stack protocol to form a logical system, in which the remote equipment only performs forwarding, and the backbone (English: spine) The switch not only forwards but also controls and manages the entire SVF system. Such as figure 1 The typical scenario of the SVF system shown in the figure adopts uplink dual-homing access. The access switches (called leaf switches in the SVF system) are dual-active connected to the backbone switches, and the backbone switches are connected to the core layer switches. Convergence (English: trunk) selects a port forwarding through hash (English: hash). [0003] In the SVF system, the peer-lin...

AI Technical Summary

Problems solved by technology

[0003] In the SVF system, the peer-link is the communication link that carries the management channel and service channel between the backbone switches. If the peer-link fails, the two backbone switches connected by the peer-link will split into two independent dual For the main system, in order to solve the dual-active failure, the dual-active detection protocol (English: Dual-Active Detector, referred to as: DAD) will close all the ports on one of the backbone switches, the backbone switch will be completely unavailable, and the uplink and downlink traffic will be All switched to another backbone switch, causing the bandwidth of the SVF system to be halved

Images