Method and device for detecting service message forwarding state of TRUNK members

Abstract

The embodiment of the invention provides a method and a device for detecting a service message forwarding state of TRUNK members. The method comprises the following steps of: acquiring at least two unopened ports in opposite end equipment butted by TRUNK; taking at least one unopened port in at least two unopened ports as a destination port, and transmitting a UDP (User Datagram Protocol) message to the opposite end equipment; and setting the service message forwarding state of TRUNK members that transmit the UDP message into a non-forwarding state when an ICMP (Internet Control Message Protocol) unreachable message returned by the opposite end equipment is no received. The embodiment realizes the TRUNK link detection by transmitting the UDP message to the unopened UDP ports of the opposite end equipment and simultaneously detecting the responded ICMP unreachable message, detects the abnormal conditions of a TRUNK link of the device and ensures the normal service operation; and the method has wide application range.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular to a method and device for detecting forwarding status of service messages of members of a port aggregation TRUNK. Background technique [0002] With the continuous development of communication technology, port trunking (abbreviation: TRUNK) technology has been widely used. The so-called TRUNK is a technology that binds multiple links into one link. Based on the TRUNK function, it allows simultaneous transmission between switches and switches, switches and routers, hosts and switches or routers through multiple interfaces in parallel. To provide higher bandwidth, greater throughput, greatly improve network capabilities. [0003] In a system composed of two devices using the TRUNK technology for communication, if a member of the TRUNK link, that is, an interface fails, for example, the interface is up but the link is unreachable, the service wi...

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that when using the existing technology to detect the abnormality of the trunk link, it is required that the two devices connected to the trunk must support the LACP protocol. If one of the connected devices does not support the LACP protocol, the protocol It cannot take effect and cannot detect the abnormality of the trunk link caused by interface failures such as interface failures such as interface UP on the link but link failure leading to service interruption, which has certain application limitations.

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