Multi-loop contact Ethernet loop network loop protection switchover method
A technology of protection switching and looping, which is applied in the field of data communication, can solve the problems of long link switching time and unreliability, and achieve the effect of ensuring normal communication
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[0033] Below in conjunction with accompanying drawing technical scheme of the present invention is described in further detail, now with reference to Fig. 5: there are three physical rings: ring 1, ring 2 and ring 3 are tangent to a public link P1-P2, the intersecting of three rings Node switches S1 and S2, all switches in the network topology belong to a common EAPS domain, have the same control VLAN (control virtual local area network) and service VLAN (service virtual local area network), and each ring has a master node Master, Each Master has a master port and a slave port. When all the links on the network topology are intact, the intersecting node switches S1 and S2 regularly detect the public link, and select a complete ring (such as ring 1) as the public link The backup public link of each ring, and the detection packets on each ring are forwarded by the public link P1-P2 through the intersecting node switches S1 and S2. When a link on ring 2 fails, the adjacent node sw...
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