Loopback control method and device

Abstract

The method comprises: when the loop-back device monitors a loop-back of VLAN existed on a port; the attribute of the port is set as 'banning the passing of VLAN message having loop-back'; after receiving the message from said port, the loop-back device decides if the message is a VLAN message having loop-back; if yes, the message will be abandoned; otherwise, relaying the message. The invention also provides a device for control the loop-back, which comprises an attribute setting unit and a message relaying unit.

Description

technical field [0001] The invention relates to network communication technology, in particular to a loopback control method and device. Background technique [0002] In various existing networking, forwarding loops, that is, loopbacks, often occur due to errors such as network configurations or network connections. If there is a forwarding loop in the network, a message sent by a network device such as network device 1 may be forwarded by other network devices and then received by network device 1, and network device 1 will also send the packets itself The messages that have been sent are forwarded again, and the cycle continues. This will easily cause a large number of repeated forwarding of packets, which will lead to the consumption of network resources and even the paralysis of the network. The purpose of loopback monitoring is to monitor whether there is a loop on the port of the network device. When the loopback monitoring function of the port is enabled, the loopb...

AI Technical Summary

Problems solved by technology

It can be seen that the existing loopback control method that directly closes the port is likely to have an adverse impact on normal users, resulting in service interruption of normal users

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