Ethernet ring network-based PBB-TE protection method

A PBB-TE, ring network technology, applied in the field of network communication, can solve problems such as poor scalability, communication interruption, waste of network resources, etc.

Inactive Publication Date: 2010-11-17
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
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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 overla

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  • Ethernet ring network-based PBB-TE protection method
  • Ethernet ring network-based PBB-TE protection method
  • Ethernet ring network-based PBB-TE protection method

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Embodiment 1

[0083] As shown in Figure 9, the ring network includes nodes A, B, C, D, E, and F, and includes links , , , , and links. Node A is the control node, and the link directly connected to its a2 port is a ring protection link, and the a2 port of node A blocks the forwarding of data packets under the normal condition of the ring network. Nodes A, B, and D are respectively connected to nodes on 10,000 subnet rings. Below, the specific implementation process of the present invention will be described by taking subnet B0 as an example to send data messages to subnet D0 through the tunnel on the ring network

[0084]In the case of no fault in the ring network, the control node A blocks the data packet forwarding function of its a2 port. After node B receives the data packet p sent by B0 to subnet D0, it uses to encapsulate the data packet P (the encapsulated data packet will be marked as tunnel), then use to look up the address forwarding table to obtain the egress port b1, node...

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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...

Claims

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Application Information

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IPC IPC(8): H04L12/437H04L12/56H04L12/24H04L45/24
Inventor 王斌
Owner NANJING UNIV OF POSTS & TELECOMM
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