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Automatic protection switching method and device

An automatic protection switching and link protection technology, applied in the field of communication, can solve the problem of slow switching of forwarding entries, and achieve the effect of improving processing efficiency and speed

Inactive Publication Date: 2011-09-14
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The invention provides an automatic protection switching method and its device, which are used to solve the problem of slow switching of forwarding entries in the existing APS switching process

Method used

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  • Automatic protection switching method and device

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Embodiment Construction

[0032] Link aggregation is a very common way to implement link load sharing through link bundling. Its working principle can be as follows Figure 5 As shown, the aggregated link has n physical links (link 1, link 2 ... link n), and N different flows are sent through the aggregated link. According to the aggregation link selection algorithm, N pieces of traffic will be sent out from n links, and it is uncertain which traffic is sent from which link.

[0033] If the outbound port of the route on the device is an aggregated link, the outbound port of the route is the aggregated link instead of the aggregated physical link. Its structure is as Image 6 shown. At the same time, in the way of link aggregation, there is a basic event that needs to be processed, that is, the change of the physical member link in the aggregated link. For example, the join event of a new physical link, or the exit event of a physical link in an aggregation. If a new physical link joins the aggrega...

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Abstract

The invention discloses an automatic protection switching method and device, which are applied to routing equipment configured with the automatic protection switching APS. The method comprises the steps of arranging an aggregation port on the routing equipment, adding a port of an APS-related link on the routing equipment to the aggregation port as a member port, setting the current working link port in the aggregation port as an available port, setting a corresponding protection link port as an unavailable port, and arranging an identifier of the aggregation port in a forwarding table entry as an outlet port identifier; and after an APS event is triggered by the routing equipment, obtaining the aggregation port of the current working link port, setting the current working link port in the aggregation port as an unavailable port, and setting a protection link port corresponding to the current working link port as an available ort. By using the invention, the switching efficiency and speed of the forwarding table entry in the APS switching process can be improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an automatic protection switching method and a device thereof. Background technique [0002] APS (Automatic Protection Switching, automatic protection switching) is an automatic protection switching mechanism of SDH (Synchronous Digital Hierarchy, synchronous digital system) link. The realization principle of APS is to use a redundant protection link to protect one or more working links. When a problem occurs on the working link, switch to the protection link for work. [0003] APS has three working structures: 1+1, 1:n, and 1:1. Among them, 1+1 means that data is sent on both links, and which link the receiving end receives depends on the receiving end itself; 1:n means that one link protects multiple links, and the protection link is usually in the In the idle state, only when there is a problem with a certain working link, the data of the working link is switched to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/24H04L45/24
Inventor 邹勇
Owner NEW H3C TECH CO LTD
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