Ethernet automatic protection switching method

An automatic protection switching, Ethernet technology, applied in data exchange network, data exchange through path configuration, digital transmission system, etc., can solve problems such as network oscillation, achieve the effect of increasing stability and preventing network topology oscillation
CN101127673AInactive Publication Date: 2008-02-20HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2008-02-20
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The utility model relates to an Ethernet automatic protection switching method, comprising at least an alarm process or a polling process. The method comprises the following steps: A. judging whether the loop good and bad detection frame in the polling process is detected overtime, or the LINKDOWN signal sent by other transmission nodes in the alarm process is detected, and judging whether the secondary port link of the main node is dropped or the physical port is failed; B. when the secondary port link of the main node is dropped or the physical port is failed, the main node restrains EAPS protection action; when the physical port and the secondary port link of the main node is in normal operation, and the loop good and bad detection frame in the polling process is detected overtime, or the LINKDOWN signal sent by other transmission nodes in the alarm process is detected, then the main node starts EAPS protection action. Since the unsuitable protection action is restrained, the method prevents network topology oscillation and improves the stability of EAPS protection when the secondary port of the main node fails or the link interconnected with the secondary port of the main node fails in EAPS protection domain.
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Description

technical field

[0001] The invention relates to an Ethernet automatic protection switching method (EAPS-Ethernet Automatic Protection Switching). Background technique

[0002] With the rapid increase of data service requirements, traditional Ethernet (LAN) is evolving to carrier-class Ethernet. Among them, the Metro Ethernet Forum (MEF) gave five basic requirements for carrier-class Ethernet: (1) scalability, (2) reliability, 50ms protection switching, (3) support for QOS policies, (4) support for TDM emulation services , (5) Operation-Management-Maintenance and Assignment (OAM&P) of Ethernet.

[0003] It can be seen that the MEF requires a protection switching of less than 50 ms in the protection switching requirement of the carrier-class Ethernet service proposed by the Ethernet protection.

[0004] Metro Ethernet Standard (MEF2, full name "Ethernet Service Protection Requirements and Framework in Metro Ethernet Networks") was officially released in February 2004. From t...

Claims

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