Method for realizing fast re-routing and network node

A network node and routing technology, applied in the field of multi-protocol label switching traffic engineering, can solve the problems affecting the speed of switching, affecting the efficiency of network node routing, and affecting the speed of FRR switching, so as to improve speed, improve efficiency, and reduce a large number of The effect of repeated operations

Active Publication Date: 2012-08-15
ZTE CORP
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Problems solved by technology

[0003] However, using the above method, when the repair node switches the data traffic on multiple active LSPs to the backup LSP, it needs to modify the next-hop port information corresponding to the active LSP to be switched one by one to the next-hop port information corresponding to the backup LSP. The port information of the jump will generate a large

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  • Method for realizing fast re-routing and network node
  • Method for realizing fast re-routing and network node
  • Method for realizing fast re-routing and network node

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Embodiment Construction

[0032] The basic idea of ​​the present invention is: set up FRR group according to backup LSP, set the mark of FRR group, the mark of FRR group is set to point to the next hop of work in the FRR group; The port information of the next hop in the active LSP is revised as The identifier of the FRR group; when it is determined to perform FRR switching, the identifier of the FRR group is set to point to the protection next hop in the FRR group.

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] A method for realizing FRR provided by the present invention, such as figure 1 shown, including the following steps:

[0035] Step 101: Establish an FRR group according to the backup LSP, and set an identifier of the FRR group.

[0036] Here, when the FRR group is set up as a network node as a repair node, the port information of the next hop in the backup LSP recorded by itself is extra...

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Abstract

The invention discloses a method for realizing fast re-routing (FRR), which includes: building an FRR group according to a backup label switching path (LSP), setting marks of the FRR group to point to a next operation hop in the FRR group; modifying port information of the next hop in an original LSP into the marks of the FRR group; and setting the marks of the FRR group to point to the next protection hop in the FRR group when FRR switching is determined to be carried out. The invention further discloses a network node, by the aid of the method for implementing fast re-routing, many repeated operations during switching can be reduced, FRR switching speed is increased and self-routing management efficiency of the network node is improved.

Description

technical field [0001] The present invention relates to the technical field of Multi-Protocol Label Switching Traffic Engineering (MPLS TE, Multi-Protocol Label Switching Traffic Engineering), in particular to a method and a network node for realizing fast rerouting (FRR, Fast ReRoute). Background technique [0002] FRR is the technology for protecting links and network nodes in MPLS TE. Its basic principle is to establish a backup LSP for one or more Label Switching Paths (LSPs) to be protected in advance, and one or more of them to be protected The LSP can be called the active LSP, and the network node that manages the head node of the backup LSP is used as the repair node; when the repair node detects that a link failure occurs on the active LSP managed by itself or any network node fails, the repair node will The data traffic on the active LSP is switched to the established backup LSP. Wherein, the method of switching the data flow on the active LSP to the backup LSP is...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L45/28
Inventor 林宁
Owner ZTE CORP
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