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Method for processing label distribution message and label exchange router

A processing method and label distribution technology, which can be used in data exchange networks, digital transmission systems, electrical components, etc., and can solve problems such as inability to establish LSPs

Inactive Publication Date: 2009-04-22
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to propose a label distribution message processing method and a label switching router to solve the problem that the LSR cannot establish an LSP after receiving the label mapping announcement message first and then receiving the address message

Method used

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  • Method for processing label distribution message and label exchange router
  • Method for processing label distribution message and label exchange router
  • Method for processing label distribution message and label exchange router

Examples

Experimental program
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Embodiment Construction

[0029] figure 2 The flow chart of an embodiment of the method for processing tag distribution messages of the present invention includes:

[0030] Step 21, a certain LSR judges whether the address provided in the received address message for notifying the added address has been created, and if the address provided in the received address message has not been created, perform step 24; If the address provided in the address message has been created, determine whether the address is the next-hop address corresponding to the FEC, that is, determine whether the address is the next-hop address corresponding to a certain FEC, wherein, The label mapping message corresponding to the FEC has been received in advance; if so, execute step 22; otherwise, end the process.

[0031] Step 22. If the address is the next hop address, the LSR judges whether the FEC has been added to the local FTN table, and if so, ends the process; otherwise, executes step 23.

[0032] Step 23. If the FEC has ...

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PUM

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Abstract

The invention relates to a processing method used for distributing messages by labels and a label exchanging router; wherein, the method comprises the steps as follows: when a message used for informing that the address provided in an address message used for adding addresses is established, whether the address is the next hop address corresponding to the forwarding equivalence class or not is judged; the label mapping message corresponding to the forwarding equivalence class is received in advance; when the address is the next hop address, whether the forwarding equivalence class is added into an FTN list or not is judged; when the forwarding equivalence class is not added into the FTN list, the forwarding equivalence class is added into the FTN list; corresponding FEC is added into the FTN list when the LSR receives the address message before receiving the label mapping announcement message, thus solving the problem that the LSP can not be established when the LSR receives the address message after receiving the label mapping announcement message.

Description

technical field [0001] The invention relates to the technical field of computer network communication, in particular to a method for processing label distribution messages and a label switching router. Background technique [0002] Multiprotocol Label Switching (Multiprotocol Label Switching, MPLS for short) is a technology for high-speed and efficient data forwarding using labels. The so-called multi-protocol means that MPLS supports a variety of network layer protocols. The so-called label switching is to attach a fixed-length field called a label to a message or data to be transmitted, and the message or data to be transmitted from source to destination Route selection and forwarding in the MPLS network through labels. [0003] There are many protocols with label distribution function in the MPLS system, including new protocols newly defined for MPLS and protocols with label distribution function obtained by extending other protocols. Currently, the most common protocol...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L45/50
Inventor 丘允阳
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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