Method, device and MPLS communication system for MPLS packet forward

A message and equipment technology, applied in the field of message forwarding equipment and MPLS communication system, can solve the problems of increasing maintenance costs, achieve the effect of reducing maintenance costs, reducing maintenance workload, and increasing network burden

Active Publication Date: 2008-09-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For a small network, this kind of configuration guarantee is easy to achieve, but in a large-scale network, this kind of error caused by inconsistent configuration is unavoidable and will increase maintenance costs

Method used

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  • Method, device and MPLS communication system for MPLS packet forward
  • Method, device and MPLS communication system for MPLS packet forward
  • Method, device and MPLS communication system for MPLS packet forward

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Embodiment Construction

[0043] The embodiment of the present invention proposes a method for forwarding MPLS messages, a message forwarding device, and an MPLS communication system that carry a mode flag through the MPLS message control word, and the other end performs processing according to the encapsulation mode indicated by the mode flag, thereby realizing MPLS The PW encapsulation processes at both ends of the tunnel are the same.

[0044] A method for forwarding an MPLS message, a message forwarding device, and a technical solution of an MPLS communication system according to an embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] refer to figure 2 , which illustrates a flow chart of a method for forwarding MPLS packets according to an embodiment of the present invention. The methods include:

[0046] S1. The first edge device adds a mode flag to the MPLS message, the mode flag is used to indicate the encapsulation mode...

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Abstract

The invention discloses a method, a device and a system for forwarding MPLS message, wherein, the method comprises the following steps: a second edge device receives MPLS message carrying mode mark sent by a first edge device and the mode mark is carried by MPLS message control words and used for indicating the package mode of a virtual link arranged on the first edge device; the second edge device processes the MPLS message according to the package mode indicated by the mode mark and then sends the processed MPLS message. The method, the device and the system for forwarding MPLS message of the invention can ensure uniform PW packet at two ends of an MPLS tunnel, improve reliability of a network and reduce maintenance cost.

Description

technical field [0001] The invention relates to the field of electronic communication, in particular to a method for forwarding MPLS messages, a message forwarding device and an MPLS communication system. Background technique [0002] Multi-protocol Label Switching (MPLS) forwarding refers to encapsulating the user's original message inside the MPLS label, and forwarding only according to the MPLS label information in the MPLS tunnel without modifying the content of the original message , at the opposite end of the MPLS tunnel, the user's original packet can be forwarded intact. This requires that the encapsulation modes of the virtual links (Pseudo Wire, PW) at both ends of the tunnel must be consistent, otherwise the tag information of the original message will be modified. [0003] In a multi-protocol label switching (Multi-protocol Label Switch, MPLS) virtual private network (Virtual Private Network, VPN), there are mainly two types of tags on the PW, namely U-tag and P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/46H04L29/06H04L12/721
Inventor 张卫平
Owner HUAWEI TECH CO LTD
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