Pseudo wire protection method, pseudo wire protection device and node
A pseudo-wire and head node technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve the problems of occupying additional system resources and long detection time of pseudo-wire switching protection mechanism, reducing detection time and improving resources. The effect of utilization
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Embodiment 1
[0047] IETF RFC4553 and IETF RFC5086 respectively define methods for encapsulating unstructured and structured time-division multiplexing signals into pseudowire packet-switched networks; and the specification defines the definition of each bit of the control word in detail. Such as figure 1 and figure 2 Shown: figure 1 The unstructured emulation mode control word format is shown, figure 2Shown is the structured emulation mode control word format. Among them, IETF RFC4553 and IETF RFC5086 stipulate that when the access side of the end node of the service path fails, when the end node of the current service path performs pseudowire encapsulation, the payload of the pseudowire message is set to all 1s, and the The head node is sent after the L bit position is 1; when the pseudowire path from the head node to the tail node fails, IETF RFC4553 and IETF RFC5086 stipulate that when the tail node of the current service path is performing pseudowire encapsulation, the R bit posit...
Embodiment 2
[0059] This embodiment provides a pseudowire protection device, please refer to Figure 4 As shown, including detection module and pseudo wire protection switching module:
[0060] The detection module is used to monitor the reception of pseudowire messages by the head node on the main pseudowire path. The main pseudowire path in this embodiment is the current working pseudowire path, that is, the current service path.
[0061] The pseudo-wire protection switching module is used to judge whether to perform the active-standby switching operation of the pseudo-wire according to the monitoring result of the detection module.
[0062] For details, please see Figure 5 and Figure 6 As shown, the detection module in this embodiment includes a pseudowire packet detection submodule; the pseudowire protection switching module includes a judgment submodule and a switching execution submodule; the pseudowire packet detection submodule is used to detect the head node at a preset time ...
Embodiment 3
[0070] This embodiment also provides a node, which is used as a head node, and specifically a dual-homing node, which includes a memory and a processor, the memory is used to store at least a program module, and the processor is used to execute according to at least one of the program modules The following steps:
[0071] Monitoring the reception of pseudowire messages by nodes on the main pseudowire path, where the main pseudowire path is the current working pseudowire path;
[0072] According to the monitoring results, it is judged whether to perform the active-standby switchover operation of the pseudo-wire. This step specifically includes:
[0073] When the monitoring result is that the head node does not receive the pseudowire message within the preset time threshold, the active / standby switching operation of the pseudowire is performed; otherwise, it is judged whether to The active / standby switchover operation of the pseudowire is required. Specifically, when the monit...
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