Three-layer virtual private network (VPN) access method and system

An access method and access system technology, applied in the access method and system field of Layer 3 VPN, can solve the problems of high PE equipment processing capability requirements, low access network scalability, and high PE equipment complexity, and achieve Improve scalability and security, simplify message processing, and reduce complexity

Inactive Publication Date: 2011-05-11
ZTE CORP
View PDF6 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second method not only saves the number of PE devices, but also saves the number of physical ports, but the problem is that the requirements for the two logical ports are very high, and the layer-2 logical port needs to support the restoration of the layer-2 message; The layer logical port needs to support the decapsulation of the layer 2 information of the message, that is, the device still needs to

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Three-layer virtual private network (VPN) access method and system
  • Three-layer virtual private network (VPN) access method and system
  • Three-layer virtual private network (VPN) access method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0053] In order to realize the Layer 3 VPN connected to the aggregation / core network through the access network, the present invention is based on the mechanism of Layer 2 VPN access to the Layer 3 VPN, aiming at saving costs and reducing equipment complexity, and proposes an IP pseudowire connection How to enter Layer 3 VPN. The method accesses the layer-3 VPN through the IP pseudowire mode, and realizes the mapping between the IP pseudowire and the virtual routing and forwarding table (VRF, Virtual Routing and Forwarding) on ​​the PE equipment connecting the layer-3 VPN and the access network, and the PE The device forwards packets according to the mapping between IP pseudowires and VRFs, so that various types of access links can be connected to Layer 3 VPN through a unified access network, improving the scalabilit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a three-layer virtual private network (VPN) access method. In the method, access networks access the three-layer virtual private network (VPN) through internet protocol (IP) pseudowires. The method comprises: the mapping relationship between the IP pseudowires and virtual routing and forwarding (VRF) tables is established on the provider edge (PE) equipment connected with the three-layer VPN and the access networks; when receiving IP messages from the IP pseudowires, the PE equipment searching the mapping relationship for VRF tables corresponding to the IP pseudowires and forwards IP messages in the three-layer VPN according to the VRF tables searched out and the target IP addresses of the IP messages; and when receiving the IP messages from the three-layer VPN, the PE forwards the IP messages to the IP pseudowires corresponding to the target IP addresses of the IP messages according to the target IP addresses of the IP messages. The invention also discloses a three-layer VPN access system. The three-layer VPN access method and the three-layer VPN access can improve the expandability of the access networks and lower the complexity of the PE equipment.

Description

technical field [0001] The invention relates to a virtual private network (VPN) access technology in network communication, in particular to a three-layer VPN access method and system. Background technique [0002] Virtual Private Network (VPN, Virtual Private Network) technology has been widely used in the data communication field. Operators provide private network services for large enterprises, small and medium enterprises, governments, and education industries through VPN technology. [0003] Currently, there are mainly two types of VPN technologies commonly used, namely Layer 2 VPN technology and Layer 3 VPN technology. Layer 2 VPN technology provides users with Layer 2 connections, and Layer 3 VPN technology provides Layer 3 connections. Layer 2 VPN technology has high security and low management complexity for operators, but it also has high requirements for users to maintain their own virtual network. It is suitable for those who have sufficient ability to maintain n...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L12/56H04L12/46
CPCH04L12/4641H04L45/00H04L45/586
Inventor 范亮宋军吴波
Owner ZTE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap