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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

Inactive Publication Date: 2007-06-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the biggest problem with the spanning tree protocol is: when a link fails, the backup link takes a long time to switch and is unreliable

Method used

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  • Multi-loop contact Ethernet loop network loop protection switchover method
  • Multi-loop contact Ethernet loop network loop protection switchover method
  • Multi-loop contact Ethernet loop network loop protection switchover method

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Embodiment Construction

[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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Abstract

A loop protective switching-over method of Ethernet loop network with multiring in tangency includes selecting a perfect ring as back-up public link of public link, upgrading back-up public link to be temporary public link of the other rings when public link is fault and then selecting one perfect ring from the other rings as back-up public link of current temporary public link, restoring network to be on default-setting after public link with multi-ring in tangency is restored to be normal.

Description

technical field [0001] The invention relates to an Ethernet automatic protection technology in the field of data communication, in particular to a multi-ring tangent Ethernet ring network automatic protection switching method. Background technique [0002] Ethernet Automatic Protection Switching (EAPS, Ethernet Automatic Protection Switching) is an automatic protection switching mechanism in the ring topology Ethernet. On the ring network, EAPS is a technology that can provide fast link switching. Multiple nodes are connected to form a ring. There is a master node on the ring, and other switches are slave nodes. The EAPS ring has a control VLAN (control virtual local area network) specially for sending EAPS protocol messages and a service VLAN (service virtual local area network) specially for user data. One of the two ports of the master node on the ring is the master port and the other is the slave port. For the service VLAN, when the link on the ring is normal, the maste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437
Inventor 孙克勇曲延锋赵志强
Owner ZTE CORP
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