Fault recovery method and system

A fault recovery and link protection technology, applied in the communication field, can solve problems such as business failures, business impacts, ring network protection protocols that cannot meet link convergence performance requirements, etc.

Active Publication Date: 2020-10-30
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

After the switching network status is stable, if the active forwarding port fails, the ring network protection protocol needs to be recalculated and the blocked port should be restored to the normal state for service forwarding, thereby activating the redundant link and restoring the switching network connectivity. Fault recovery, the above process takes a certain amount of time
[0005] At present, the requirements for the fault recovery time of the Layer 2 Ethernet are getting highe

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  • Fault recovery method and system

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Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0041] figure 1 Shown is an example of an Ethernet switching network. In this Ethernet switching network, in order to perform link backup and improve network reliability, redundant links are usually used. However, the use of redundant links will create loops on the switching network, such as figure 1 Loop 1, Loop 2 and Loop 3 in the middle.

[0042] in figure 1 After deploying the ring protection protocol in the Ethernet switching network, if a loop occurs in the switching network, the ring protection protocol blocks redundant ports through topology calculations, thereby blocking redundant links and eliminating possible loops in the switching network , For example for figure 1 Loop 1, loop 2 and loop 3 in, block redundant ports d and e respectively, thereby eliminating loop 1, loop 2 and loop 3.

[0043] The embodiment of the present invention provides...

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Abstract

The invention discloses a fault recovery method and system, and relates to the technical field of communication. The fault recovery method comprises the following steps: receiving a first loop calculation result of a first looped network protection protocol; based on the first loop calculation result, maintaining the port states of the forwarding port and all associated blocked ports in the protection link group table, and issuing port settings; receiving a link fault detection result, modifying the forwarding port of a fault link and port states of all associated blocked ports in the protection link group table, and issuing port settings; synchronizing a forwarding link fault detection result to recalculate according to the first ring network protection protocol; and updating the protection link group table based on the recalculation result. The fault recovery method and system are combined with a hardware link state detection technology, when a link fault is detected, link protectionswitching is rapidly carried out, and packet loss caused by long-time service protection switching after calculation of an existing link protection protocol is avoided.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a failure recovery method and system. Background technique [0002] In order to perform link backup and improve network reliability in an Ethernet switching network, redundant links are usually used. However, the use of redundant links will cause loops on the switching network, causing broadcast storms and instability of the Media Access Control (MAC) address table, resulting in poor user communication quality and even communication interruption. [0003] In order to solve the loop problem in the switching network, many ring network protection protocols to prevent loops have been proposed, such as Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), Multiple Spanning Tree Protocol (Multiple Spanning Tree Protocol, MSTP) and G8032, among which the G.8032 protocol is a standard protocol for the Ethernet link layer defined by the International Telecommunicatio...

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Application Information

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IPC IPC(8): H04L12/24H04L12/26
CPCH04L41/0663H04L41/0654H04L43/0823H04L43/0841
Inventor 汪学舜郭川生董喜明戴锦友
Owner FENGHUO COMM SCI & TECH CO LTD
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