A method and device for discovering that a member device leaves

Abstract

The invention discloses a method and device for discovering that a member device leaves. The method includes: the member device judges whether it is a master member by using the device information of the member device and the device information of other member devices carried in the broadcast hello message device; if yes, the master member device uses the device information of other member devices carried in the unicast hello request message to generate a stack keep-alive chain; the master member device notifies each member device on the stack keep-alive chain to send a unicast hello message destination address; when the master member device does not receive the unicast hello message within the first preset time, it finds that the tail member device on the stack keep-alive chain leaves; the master member device receives the message from the stack keep-alive When the non-lead member device on the chain sends a unicast hello request message, it is found that the previous member device of the non-lead member device on the stack keep-alive chain has left. In the embodiment of the present invention, the time for discovering that a member device leaves is shortened, and the network load is reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method and device for discovering that a member device leaves. Background technique [0002] Such as figure 1 As shown, it is a network diagram of a ring stack. The stack includes multiple member devices, and the physical stack ports are directly connected between the member devices. When the physical stack port is down, the member devices can be considered as leaving, so members can be quickly found The device leaves. As the stack scale increases, a large number of network devices are connected to a Layer 2 network, resulting in a star stack model. Such as figure 2 As shown in the figure, it is a schematic diagram of a star stack network. The stack includes multiple member devices, and there is no physical stack port between the member devices, but they are interconnected through a layer 2 network. Since there is no direct connection to the physical stack po...

AI Technical Summary

Problems solved by technology

Since the reliability of the broadcast message cannot be guaranteed and has a great impact on the network, it needs to be retransmitted multiple times and cannot be sent intensively, which increases the requirements for the maximum number of keep-alive times and the requirements for a single keep-alive interval, making it possible to discover member devices The time left is too long, and there are a large number of broadcast packets in the network

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