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Method, device and network equipment for processing label transmitting path fault as well as network equipment

A label switching path and failure technology, applied in the computer field, can solve the problem that the main label switching path cannot be restored in time, achieve strong versatility, improve accuracy, and achieve simple effects

Inactive Publication Date: 2012-09-05
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Embodiments of the present invention provide a label switching path failure processing method, device, and network equipment to solve the problem in the prior art that the label switching path may cause a routing black hole or the main label switching path cannot be restored in time when the fault is restored.

Method used

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  • Method, device and network equipment for processing label transmitting path fault as well as network equipment
  • Method, device and network equipment for processing label transmitting path fault as well as network equipment
  • Method, device and network equipment for processing label transmitting path fault as well as network equipment

Examples

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Embodiment 1

[0039] The label switching path failure processing method provided in the first embodiment of the present invention is illustrated by taking the bidirectional forwarding detection BFD as an example, and the processing process after the failure is detected in other detection methods is similar. The method flow is as Figure 5 As shown, the execution steps are as follows:

[0040] Step S101: The BFD session is in a normal operating state.

[0041] That is, after the BFD session establishment process is completed, the ingress device and the egress device (which can be collectively referred to as network devices) enter the normal state of sending bidirectional forwarding detection packets to detect the LSP link failure. For example, equipment such as ingress LSR and egress LSR.

[0042] Step S102: It is detected that the LSP has a link failure.

[0043] When a link between two devices on the LSP fails, BFD can detect the failure.

[0044] Step S103: Change the BFD session state from the s...

Embodiment 2

[0064] The label switching path failure processing method provided in the second embodiment of the present invention realizes message forwarding based on the setting of the forwarding entry status in the first embodiment, and the process is as follows Image 6 As shown, the execution steps are as follows:

[0065] Step S201: Obtain the message to be forwarded.

[0066] The network device can receive messages that need to be forwarded sent by other devices or can also obtain messages that need to be forwarded to other devices that it has constructed.

[0067] Step S202: searching for a forwarding message in an active state or inactive state matching the message to be forwarded. Specifically, according to the different types of packets that need to be forwarded, the matching conditions are also different, including:

[0068] When a data message needs to be forwarded, an active forwarding entry that matches the message sending rule of the data message is found to forward the data message...

Embodiment 3

[0074] The method for processing label switching path failures provided in the third embodiment of the present invention describes in detail a specific implementation scheme for packet forwarding based on the setting of the forwarding entry status in the first embodiment, and the process is as follows Figure 7 As shown, the execution steps are as follows:

[0075] Step S301: Obtain the message to be forwarded.

[0076] Taking an MPLS network as an example, a network device can receive messages that need to be forwarded sent by other devices or can also obtain messages that need to be forwarded to other devices, including data messages and detection messages.

[0077] Step S302: Check whether there is a matching forwarding entry in the active state.

[0078] Among them, the forwarding entry adds an inactive state, and the data message cannot be forwarded through the inactive forwarding entry, while the detection message can.

[0079] Therefore, according to the message sending rules, it...

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Abstract

The invention discloses a method, a device and network equipment for processing label switched path fault. The method comprises the following steps of: when the LSP (Label Switched Path) is detected to be faulty, setting switched items of the LSP into an unactivated state; using the switched items in the unactivated state for sending detection messages; when the fault of the LSP is recovered, setting the switched items which correspond to the LSP into an activated state; and using the switched items in the activated state for sending the detection messages and / or data messages. The invention can carry out normal switching when the LSP is faulty and recover the state of a link in time when the fault of the LSP is revered by setting the activated state and the unactivated state of the switched items, thereby preventing the problem of black hole routes and enhancing the speed and the efficiency of fault switched treatment.

Description

Technical field [0001] The present invention relates to the field of computer technology, in particular to a method, device and network equipment for processing label switching path failures involving multi-protocol label switching. Background technique [0002] Multiprotocol Label Switching (MPLS) is a technology that utilizes labels for high-speed and efficient data forwarding. Among them, the so-called multi-protocol means that MPLS supports multiple network layer protocols. The so-called label switching is to attach labels to messages and forward them according to the labels. That is, the transmission of data from the source address to the destination address is carried out in the MPLS network through labels. The switch path (Label Switched Path, LSP) is selected to implement route selection and forwarding. [0003] The label switching path may include a series of label switching routers (Label Switching Routers, LSRs), and the LSRs located at the edge of the MPLS network are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/56H04L45/50
Inventor 丘允阳
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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