Realizing method of PTN forward compatible MSTP ring network service channel protection

A technology of a service channel and an implementation method, which is applied in the field of PTN forward compatible with MSTP ring network service channel protection, can solve the problems that the ring network system cannot realize channel protection, and achieve the effect of ensuring channel protection and realizing channel protection

Inactive Publication Date: 2010-06-09
FENGHUO COMM SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem that the PTN forward compatible MSTP ring network system cannot realize channel protection

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  • Realizing method of PTN forward compatible MSTP ring network service channel protection
  • Realizing method of PTN forward compatible MSTP ring network service channel protection
  • Realizing method of PTN forward compatible MSTP ring network service channel protection

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Embodiment Construction

[0016] The present invention provides a method for implementing PTN forward compatibility with MSTP ring network service channel protection, which ensures the channel protection when the PTN equipment is forward compatible with the MSTP equipment. The present invention will be described in detail below in conjunction with the drawings.

[0017] figure 1 It is a schematic diagram of the normal operation of PTN forward compatible MSTP ring network, such as figure 1 As shown, the ring network includes a PTN network and an MSTP network that are connected to each other. The PTN network is composed of a number of PTN devices connected in series. The MSTP network is composed of a number of MSTP devices connected in series, among which A, B, C, G, H, I PTN equipment, D, E, F are MSTP equipment, PTN equipment C, G adapts MSTP service to PTN in VPWS or VPLS mode, MSTP equipment E has business connection with PTN equipment A, A and E are business initiating equipment And termination equipme...

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Abstract

The invention relates to a channel protection method of a ring network, particularly to a channel protection method of a PTN forward compatible MSTP ring network system. When a ring network link goes wrong, facilities at both ends of a fault point respectively transmit AIS alarm indication signals to downstream facilities, the facilities receiving the AIS alarm indication signals then sequentially transparently transmit the signals to the downstream facilities, the AIS alarm indication signals are transmitted in the direction from an MSTP facility to a PTN facility at the joint of the PTN facility and the MSTP facility, the AIS channel alarm indication signals are inserted into a TMC layer of an NNI interface of the PTN facility, the AIS alarm indication signals are transmitted in the direction from the PTN facility to the MSTP facility, the AIS alarm indication signals of the TMC layer are inserted into a service channel of the MSTP facility, and a service initiating facility and a service finishing facility carry out concurrent selective receiving according to the received AIS alarm indication signals. The method provided by the invention effectively ensures the realization of channel protection when the PTN facility carries out forward compatibility for the MSTP facility.

Description

Technical field [0001] The invention relates to a method for channel protection of a ring network, in particular to a method for implementing PTN forward compatible MSTP ring network service channel protection. Background technique [0002] With the rapid development of data services and the continuous emergence of new modes such as broadband multi-service transmission and end-to-end bandwidth provision, the traditional synchronous digital hierarchy (SDH) technology, IP technology and Ethernet technology cannot adapt to the next-generation network for data transmission. At present, the better solution is the packet transport network PTN. [0003] However, the introduction of any advanced technology is not accomplished overnight. After years of development, in terms of 2G service carrying, the SDH / MSTP network has a mature and stable structure and a relatively large network scale. Considering that SDH / MSTP also has considerable IP service carrying capacity, and 2G services will con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437H04L12/56H04J3/08
Inventor 田耕江榕曾琪柳光全涂育红
Owner FENGHUO COMM SCI & TECH CO LTD
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