Fail processing system and method of transmission equipment

Abstract

The present invention relates to a fault disposing system and method in transmission device. The system of the invention at least comprises: a branching channel for connecting client device; a branching interface, which comprises an internal branching interface and an external branching interface; a fault detecting module; a fault execution module connected with the fault detecting module and thebranching interface; a fault transmission channel; a business aggregating or disaggregating unit; an aggregate interface; an aggregate channel. The method of the invention comprises a fault generating handing method and a fault restoring handing method. By adopting the system and method of the invention, not only the information of link connection state of Gigabit Ethernet access signal can be transmitted quickly to the routers at two ends, but also the information of connection state of optical transmission network can be transmitted to the access router, thus realizing rapid protection and compression of business data.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a fault processing system and method in transmission equipment. Background technique [0002] In order to achieve fast protection of data services in data networks, routers often use the physical layer connection status signal as the trigger condition (millisecond level) for protection convergence. However, in the current transmission network, multi-channel Gigabit Ethernet GbE (Gigabit Ethernet, hereinafter referred to as GbE) signals are aggregated into one high-speed signal through an aggregation node, such as STM-16 or STM-64, or OTU1 or OTU2 signals. Such as figure 1 As shown, the connected Ethernet signal is the branch signal of the node, and the aggregated STM-16 signal is the group signal. Because of the conversion of the frame format, the Ethernet signal is terminated at the GbE access point, and the GE -N and node 11 tributary port 101, node 11 and node 12, node 1...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the connected Ethernet signal is the branch signal of the node, and the aggregated STM-16 signal is the group signal. Because of the conversion of the frame format, the Ethernet signal is terminated at the GbE access point, and the GE -N and node 11 tributary port 101, node 11 and node 12, node 12 tributary port 601 and GE-N' establish connections with each other, but there is no direct connection between GE-N and GE-N' , Link connection status information, such as link failure signal (Loss of Signal, hereinafter referred to as LOS), link recovery LOS disappears, and connection alarm link failure (LINK FAIL), link recovery (LINK OK), cannot be directly transmitted through the physical layer To the peer router, the router can only achieve protection convergence through the upper layer protocol, resulting in too long protection convergence time (second level), unable to achieve fast protection

On the other hand, when the transmission network fails, such as when the group line is interrupted, the routers on both sides cannot perceive the link failure, and protection convergence cannot occur.

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