Loopback method for testing message and exchange device

Abstract

The invention provides a loopback method for testing a message and an exchange device, relating to the communication technology field. An embodiment of the invention comprises the following steps: receiving and storing configuration information; receiving a message, determining whether the received message is a test message or not according to stored configuration information, when the massage is the test message, exchanging a source MAC address of the message with a target MAC address of the message, and carrying out loopback on the test message to reach an input port receiving the message after address exchange. Through comparing stored configuration information with corresponding information carried by a received message, the received message is determined as the test message, MAC addresses are exchanged, the test message is subjected to a loopback treatment, loopback of the test message on the premise of not influencing other service messages is realized, and a network fault can be accurately positioned according to the test message after loopback.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a loopback method and switching equipment for test messages. Background technique [0002] At present, in the process of network-wide testing of switching equipment services and network fault location, it is often necessary to send special packets through the test source, and send the special packets back to the testing source through loopback means through the remote switching equipment. The source can judge the quality of the network or complete network fault location based on the number of received and sent special packets and the delay in the loopback. [0003] The loopback method of existing test message comprises: at first, setting the incoming port of purpose switching equipment B is the port outer loop function, promptly uses special-made self-loop head on the incoming port of switching equipment B, makes the report that this incoming port sends The text is directl...

AI Technical Summary

Problems solved by technology

[0004] In the above method, since the test message is broadcast packet sending mode and the source media access control (Media Access Control, MAC) address of the test message remains unchanged, it will cause the MAC address to be between the ingress port and the egress port of switching device A. Continuous drift, that is, the MAC address is learned from the ingress port of switching device A for a while, and learned from the egress port of switching device A for a while, resulting in the drift of address learning, which causes system instability; at the same time, due to the destination switching device The ingress port of B is set to the port out-loop function, which will cause all packets entering from the ingress port of the destination switching device B to be looped back, thus affecting the forwarding of normal service packets on this port

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