Method for providing communication between virtual special network stations

A site and purpose technology, applied in the direction of network interconnection, data exchange through path configuration, electrical components, etc., can solve problems such as inability to solve VPN site communication problems

Inactive Publication Date: 2006-10-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this network structure, relying on the existing BGP / MPLS VPN solution cannot solve the communication problem between VPN sites

Method used

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  • Method for providing communication between virtual special network stations
  • Method for providing communication between virtual special network stations
  • Method for providing communication between virtual special network stations

Examples

Experimental program
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Embodiment Construction

[0079] In order to make the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0080] Figure 4 It is a flowchart of a method for communicating between IPv4 / IPv6 BGP / MPLS VPN sites across multiple autonomous systems in the present invention. Such as Figure 4 As shown, the method includes the following steps:

[0081] Step 401: Establish a label switching path LSP between the egress PE of the source VPN site and the ingress PE of the destination VPN site;

[0082] Here, it is preferable to establish a bidirectional LSP, wherein a bidirectional IPv4 LSP can be established, and a bidirectional IPv6 LSP can also be established.

[0083] Step 402: Use the established LSP to learn routing information between the source VPN site and the destination VPN site.

[0084] Step 403: According to the obtained routing inf...

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Abstract

The invention discloses method of communication between sites in Virtual Private Network (VPN) across border gateway protocol (BGP) of mixing network in Internet protocol version 4 (IPv4)/ IPv6 of multiple autonomous system (AS)/ multiple protocol label switch (MPLS). The method includes steps: label switch path (LSP) is built between periphery equipment (PE) of service provider at exit of source VPN site and PE at entry of destination VPN site; based on obtained path information of destination VPN site, source VPN site sends VPN traffic flow to destination VPN site so as to realize communication. The invention implements communication between VPN sites when VPN sites are in IPv4/IPv6 mixing network, and backbone network of VPN is BGP/MPLS. Through improving current equipment simply, the invention can provide BGP/MPLS VPN value added service in period of transition from IPv4 to IPv6.

Description

technical field [0001] The invention belongs to virtual private network (VPN) technology, in particular a kind of border gateway protocol (BGP) / multi-protocol label that provides across multiple autonomous systems (AS) IPv4 (Internet protocol version 4) / IPv6 (Internet protocol version 6) hybrid network Switching (MPLS) method of communication between VPN sites. Background technique [0002] BGP / MPLS VPN utilizes the label characteristics of the MPLS network and the multi-protocol extension attributes of the BGP protocol to establish different virtual routing and forwarding tables (VRFs) for different VPN users on the provider edge equipment (PE) routers. Protocol extension attributes advertise VPN routing information, thereby implementing route isolation and notification among VPN users, and providing VPN services. In addition, BGP / MPLS VPN across multiple autonomous systems means that the MPLS backbone network that provides BGP / MPLS VPN services is composed of multiple aut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L29/06
Inventor 谷志慧郜帅李德丰
Owner HUAWEI TECH CO LTD
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