MESSAGE TRANSMISSION METHOD, BACKBONE SWITCH AND ACCESS SWITCH

摘要

Provided are a message transmission method, a backbone switch and an access switch. The method comprises: when a communication link between a first backbone switch and a second backbone switch breaks down, the first backbone switch sending a notification message to a first access switch, the notification message being used for indicating that the first access switch splits a first V-type communication link in the same trunk among the first backbone switch, the second backbone switch and the first access switch into a second communication link and a third communication link in two trunks; the first backbone switch receiving a response message sent by the first access switch; and the first backbone switch sending the message to the first access switch via the second communication link according to the response message, such that the first access switch forwards the message to the second backbone switch via the third communication link. The embodiments of the present invention can keep an SVF system running normally without splitting when a peer-link is faulty, so as to keep the bandwidth of the SVF system unchanged.