Message forwarding method and device

Abstract

The invention provides a message forwarding method and device, which are applied to first network equipment, and the first network equipment interacts with second network equipment through at least one link. The method comprises the following steps: when a link needs to be detected, performing conversion processing on a source media storage control (MAC) address to obtain a processed source MAC address; packaging the processed source MAC address into a first detection message; performing equivalent multipath ECMP calculation according to the processed source MAC address, and determining a link used for forwarding the first detection message; and forwarding the first detection message through the determined link. Therefore, the accuracy of the link detection result is improved.

Description

Technical field [0001] The present application relates to the field of communication technologies, and more particularly to a packet forwarding method and apparatus. Background technique [0002] Connectivity Fault Detection (CFD) Follow IEEE 802.1AG Connectivity Fault Management, CFM Agreement and ITU-T's Y.1731 protocol, is a Virtual LAN (Virtual Local Area) in a Layer 2 network (Virtual Local Area) NetWork, VLANs' end-to-end operation, management, and maintenance (Operations, Administration and Maintenance, OAM) mechanisms. The CFD is mainly used to detect link connectivity in the Layer 2 network, and confirming the fault and positioning in the failure, thereby solving the common link issues in the "last kilometer", which can effectively improve Ethernet Management and maintenance capabilities ensure stable operation of the network. In order to solve the above problems, CFD continuity detection (ContinuityCheck, CC) detection feature is enabled on two-point-to-point link to mo...

AI Technical Summary

Problems solved by technology

For the link detection between AC and AC in CE1 to CE2, the detection message is simulated from the AC of CE1 to the logic scheme. Since the destination MAC of the detection message is a group of MAC addresses fixed by CFD, the purpose is determined according to the detection level. MAC, the determined destination MAC is fixed, so that the detection message can only be fixedly forwarded to one link after passing through the equal-cost multi-path (ECMP), such as figure 1 In the PW1 link, that is, the detection packet cannot be figure 1 Forwarding is performed on the PW2 link in the network, but PW2 can normally provide forwarding services in an all-active environment

In this way, when all the packets arrive at CE2 from the PW1 link, when the PW1 link fails, the link will recalculate the forwarding path through ECMP, but the time for recalculating the forwarding path will exceed the fault detection time, which will cause CE2 will report the link failure in the direction from CE1 to CE2, but in fact it is only the link failure of PW1, while the link of PW2 is still normal and can provide forwarding service, which makes the report result inaccurate.

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