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Method for protecting tunnel bandwidth and device

A technology for protecting tunnels and protecting bandwidth, applied in the field of communications, can solve the problems of no way, no fields, and specified bandwidth, so as to achieve the effect of not wasting resources

Active Publication Date: 2014-03-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the definition of the Fast Reroute object, this object can only carry bandwidth information, and there is no field to carry the CT value
That is to say, when the main tunnel is a multi-CT DS-TE tunnel, there is no way to specify the bandwidth of some CTs of the main tunnel protected by Bypass through the Fast Reroute object.

Method used

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  • Method for protecting tunnel bandwidth and device
  • Method for protecting tunnel bandwidth and device
  • Method for protecting tunnel bandwidth and device

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Embodiment Construction

[0031] Embodiments of the present invention provide a method and device for protecting tunnel bandwidth.

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation manners.

[0033] An embodiment of the method for protecting tunnel bandwidth of the present invention is introduced below. figure 1 shows the flow of this embodiment, such as figure 1 , including:

[0034] S101: For a tunnel with at least one CT, configure the CT in the tunnel to be protected and the corresponding bandwidth through the fast rerouting object, and send it.

[0035] The main body of the configuration can be a transmission node on a tunnel, such as figure 1 Ingress node in the upper reaches.

[0036] In the fast rerouting object, a new resource reservation protocol (Resource ReServation Protocol, RSV...

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PUM

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Abstract

A method and device for protecting tunnel bandwidth are disclosed. The method for protecting tunnel bandwidth includes the steps of: for a protected tunnel which has at least one Class Type (CT), carrying the CT, which needs to be protected, of the protected tunnel and the corresponding bandwidth by means of a Fast Reroute object; sending the Fast Reroute object to a downstream node, and configuring backup tunnels according to the CT, which needs to be protected, of the tunnel and the corresponding bandwidth configured in the Fast Reroute object by the downstream node. According to the present invention, it is possible to perform the bandwidth protection according to the Class Type of the tunnel.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method and device for protecting tunnel bandwidth in Multiprotocol Label Switching Traffic Engineering (MPLS TE). Background technique [0002] MPLS TE allows the establishment of a label switching path (Label Switching Path, LSP) tunnel (hereinafter referred to as a tunnel) based on constrained routing, and can reserve bandwidth resources on a specified path. MPLS TE fast rerouting (Fast Reroute) is one of the technologies for realizing partial network protection. In the network where MPLS TE is applied, when a link or node fails somewhere, the tunnel configured with fast rerouting protection passing through these links or nodes can automatically switch data to the protection link. At the same time, the ingress node of the tunnel will try to find a new path to re-establish the tunnel, and switch the data to the newly established tunnel. Before the new tunnel i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/707H04L12/46H04L45/24
CPCH04L45/00H04L45/28H04L45/22
Inventor 李振斌刘春刘小飞
Owner HUAWEI TECH CO LTD