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Method and device for realizing three-layer virtual private network

A three-layer virtual and private network technology, applied in the field of communication, can solve the problem that terminal device 1 cannot access terminal device 2, etc.

Active Publication Date: 2018-02-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When terminal device 1 accesses terminal device 2, it still uses the MAC address of terminal device 2 as the destination MAC address of the message, so terminal device 1 cannot access terminal device 2

Method used

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  • Method and device for realizing three-layer virtual private network
  • Method and device for realizing three-layer virtual private network
  • Method and device for realizing three-layer virtual private network

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Embodiment Construction

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments. Apparently, each of the following embodiments is only a part of the present invention. Based on the following embodiments of the present invention, even if those skilled in the art do not make creative work, they can obtain other technical features that can solve the technical problems of the present invention and realize the technical effects of the present invention by equivalently transforming some or even all of the technical features. Embodiments, and these transformed embodiments obviously do not depart from the disclosed scope of the present invention.

[0031] figure 1 It is an application scene diagram of the embodiment of the present invention. Such as figure 1 As shown, the third terminal device 110 acces...

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Abstract

A method for implementing L3VPN includes: the first PE receives an access notification message sent by the first terminal device, carrying the IP address of the first terminal device, and used to notify the first PE that the first terminal device accesses the first site. The first site accesses the L3VPN through the first PE. The first PE obtains the IP address of the second PE according to the VPN ID associated with the interface receiving the access notification message and the IP address of the first terminal device, and the second site accesses the L3VPN through the second PE. The first terminal device accesses the second site before accessing the first site. The first PE obtains the IP address of the second terminal device according to the IP address of the second PE and the ID of the VPN associated with the interface receiving the access notification message. The second terminal device accesses the second Site. The first PE sends a binding update notification message to the first terminal device, carrying the MAC address of the first PE and the IP address of the second terminal device.

Description

technical field [0001] The invention relates to communication technology, in particular to a method and equipment for realizing a three-layer virtual private network. Background technique [0002] A service provider (SP for short) can use an Internet protocol backbone (IP backbone for short) to provide users with a virtual private network (Virtual Private Network, VPN for short). Layer 3 Virtual Private Network (Layer 3 Virtual Private Network, L3VPN for short) enables hosts and routers to connect to each other based on Layer 3 addresses. The L3VPN may be a Border Gateway Protocol (Border Gateway Protocol, BGP for short) VPN or a Multi-protocol Label Switching (Multi-protocol Label Switching, MPLS for short) VPN. [0003] The terminal device sends an Address Resolution Protocol (ARP) request to the Provider Edge (PE) device to which it is connected, asking for the media access control corresponding to the IP address of a remote terminal device in the same LAN. (Media Acces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L12/741H04L45/74
CPCH04L45/04H04L12/4641H04L45/745H04L12/4675H04L61/5007H04L2101/622
Inventor 徐小虎张大成
Owner HUAWEI TECH CO LTD