Ethernet ring network-based PBB-TE protection method

Abstract

The invention discloses an Ethernet ring network-based PBB-TE protection method, which comprises the following steps of: quickly recovering communication by utilizing wrap data messages; and triggering the switching of main and backup links by utilizing the wrap data messages. The method solves the problem of expandability of the application of the PBB-TE technology on the ring network, reduces network resources occupied by the CCM messages, and simultaneously avoids momentary interruption of the communication during switching the chains.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a PBB-TE protection method based on an Ethernet ring network. Background technique [0002] With the introduction of the concept of CE (Carrier Ethernet, Carrier Ethernet) to meet the needs of telecom networks, the connection-oriented Ethernet technology - PBT (Provider Backbone Transport, carrier backbone transport) also surfaced in October 2005. Since then, operators at home and abroad have adopted PBT technology to form a network, which provides a good start for the development of PBT technology in the metropolitan area network. [0003] The basis of PBT technology is the PBB (Provider Backbone Bridge, operator backbone bridge) technology defined by IEEE 802.1ah. IEEE calls PBT technology PBB-TE (Provider Backbone Bridge Traffic Engineering, an operator backbone bridge technology that supports traffic engineering). The PBB-TE technology is based on the PBB techn...

AI Technical Summary

Problems solved by technology

[0007] Although the traditional method can achieve good protection for the tunnel path, it has the disadvantage of poor scalability, especially when a large number of tunnels share a ring, the problem will become more serious

There are two main problems, which are: 1) The two endpoints of the active and standby tunnels need to send corresponding CCM messages on the primary segment and the backup segment respectively, and these CCM flows overlap each other, occupying a large amount of network resources

2) When the link is switched, there will be a momentary communication interruption

Each Ethernet switching node on the ring is connected to 10,000 subnets. In order to segmentally protect the data flow of any two subnets, any two nodes on the ring need to send CCM messages to each other. The paths of these CCM messages overlap each other. , leading to a large waste of network resources

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