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Network transmission method for multi-protocol label exchange VPN

A technology of multi-protocol labeling and switching virtualization, applied in the network transmission field of multi-protocol label switching virtual private network, can solve the problems of inconvenient upgrade and expansion, heavy control plane workload, complex processing flow, etc. Easy to operate, easy to operate effect

Inactive Publication Date: 2006-06-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The purpose of the present invention is to provide a network transmission method of a multi-protocol label switching virtual private network with simple operation, so as to overcome the heavy workload of the control plane in the prior art, the complicated processing flow, and the inconvenient upgrade and expansion

Method used

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  • Network transmission method for multi-protocol label exchange VPN
  • Network transmission method for multi-protocol label exchange VPN
  • Network transmission method for multi-protocol label exchange VPN

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as image 3 As shown, the provider edge PE1 node, the provider edge PE2 node and the P device (P device: core forwarding node device) form a multi-protocol label switching virtual private network, and the provider edge PE1 node and the provider edge PE2 establish A label switching path LSP1 is established, the customer edge CE1 terminal and the customer edge CE2 terminal that establish a virtual connection VC with the provider edge PE1 node are provided to user a and user b respectively, and the customer edge CE3 terminal that establishes a VC connection with the provider edge PE2 node and the CE4 terminal at the customer edge are respectively provided to user a and user b, and the different VC packets of user a and user b are transmitted through the same label switching path LSP1 tunnel, for example Figure 5 As shown in the figure, the message of the customer edge CE1 terminal is connected to the data plane through the data interface, and the virtual connection V...

Embodiment 2

[0070] Such as Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, the MPLS VPN specifies an existing label switching path LSP1 tunnel as the control plane between different provider edge PE nodes information transmission channels, such as Figure 6 As shown, the control plane shares the label switching path LSP1 tunnel with user a and user b, so as to establish an information transmission channel between the control planes. As for the specific control process of this embodiment is the same as or similar to that described in Embodiment 1, it will not be repeated here.

Embodiment 3

[0072] according to Figure 7 and Figure 8 ,refer to image 3 , the overall structure of this embodiment is the same as that of Embodiment 1, and the specific control flow of this embodiment is as follows:

[0073] 1. If image 3 and Figure 7 As shown, the MPLS virtual private network allocates virtual connection VC labels for the control plane, establishes virtual connection VCs at the provider edge PE1 node and provider edge PE2 node, and the control plane and the corresponding provider edge PE1 node, provider edge The PE2 node establishes a virtual connection VC. In the present invention, in view of the application complexity of the control plane, corresponding virtual connection VC labels can be allocated according to different modules or applications in the control plane, that is, the division of the forwarding equivalence class FEC can be based on different A module or an application allocates multiple virtual connection VC labels to the control plane. Create a ne...

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Abstract

The invention relates to a network transmission method for MPLSVPN in digital information transmission comprises: using control plane contained in MPLSVPN as network user and sending its information message by the network; the MPLSVPN allocates VC label and a single-enjoy LSP channel to control plane to build opposite connection between VC and LSP; the said control plane shares LSP channel with other user and allocates VC label according to different module or application. This invention is simple an flexible.

Description

technical field [0001] The invention relates to digital information transmission, in particular to a network transmission method of multi-protocol label switching virtual private network. Background technique [0002] In the multi-service transport platform MSTP (Multi-Service Transport Platform), more and more MPLS VPN technology (MPLS: Multi-Protocol Label Switching; VPN: Virtual Private Network) is adopted. MPLS VPN can be divided into Layer 2 (L2) MPLS VPN and Layer 3 (L3) MPLS VPN. Currently, the Martini solution is relatively mature and has received the most application support. The L2VPN Martini solution based on MPLS defines the signaling mode of Layer 2 encapsulation and Layer 2 transmission. It introduces the concept of virtual connection VC (Virtual Connect) marking. VC marking is in the tunnel constructed by MPLS LSP through MPLS marking stack. for multiplexing. There are many ways to establish a Label Switched Path (LSP) tunnel, and LDP or RSVP / CR-LDP and oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L45/50
Inventor 刘建华江健
Owner HUAWEI TECH CO LTD
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