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Method for core network access to multi-protocol sign exchange virtual special network

A technology of multi-protocol marking and virtual private network, which is applied in the field of MPLS VPN network access, and can solve problems such as difficulty in implementation

Active Publication Date: 2006-11-15
GLOBAL INNOVATION AGGREGATORS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] At present, GGSN accesses external networks through traditional IP routing. The uplink and downlink forwarding of GGSN gateway equipment is realized through routing. All APNs are in the same address space. If VPN is to be implemented, basically only A common tunnel encapsulation method can be used, but it is difficult to implement to access to a complex MPLS VPN network
The MPLS VPN network uses MPLS-specific label switching technology, which is quite different from the traditional IP technology. Therefore, it is difficult to directly establish a mapping relationship between APN and MPLS labels on the GGSN

Method used

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  • Method for core network access to multi-protocol sign exchange virtual special network
  • Method for core network access to multi-protocol sign exchange virtual special network
  • Method for core network access to multi-protocol sign exchange virtual special network

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Embodiment Construction

[0025] Since multiple MPLS VPN users are carried on the physical link between the GGSN and the external network, a technology must be introduced to distinguish users of different VPNs on the same physical link, so the VLAN technology is introduced to realize this connection. It is very feasible to use the virtual local area network identifier (VLAN ID) to distinguish different MPLS VPNs. At the same time, a mapping between APN and VLAN is established on the GGSN, so that users belonging to the APN can be flexibly connected to the In the MPLS VPN network.

[0026] VLAN (Virtual Local Area Network), or Virtual Local Area Network, is an emerging technology that realizes virtual workgroups by logically rather than physically dividing devices in the LAN into network segments. Although the devices connected by VLAN come from different network segments, they can communicate directly with each other as if they are in the same network segment. Compared with the traditional LAN layout, ...

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Abstract

The invention discloses a method for connecting kernel network to MPLS VPN, firstly configuring a VLAN logic subinterface on GGSN external interface, and configuring a VLAN logic subinterface on opposite-end PE, making their IP and ARP intercommunicate, then establishing APN-VLAN mapping relationship on GGSN and simultaneously establishing VLAN-VPN mapping relationship on the PE, establishing PDP context on control layer according to the APN-VLAN-VPN mapping relationship, and interacting with MPLS VPN on user layer according to the PDP context and corresponding VLAN information, so as to connect the kernel network to MPLS VPN. By VLAN technique, it establishes APN-VLAN-VPN mapping relationship in GGSN, and connects a user to corresponding MPLS VPN by this mapping relationship.

Description

technical field [0001] The invention relates to an MPLS VPN network access method, in particular to a method for connecting a core network to an MPLS VPN network. Background technique [0002] Currently, the VPN (Virtual Private Network, Virtual Private Network) technology of the enterprise network is in the ascendant, and has increasingly become the focus of attention of the industry. Among them, MPLS (Multiprotocol Label Switching, Multi-Protocol Label Switching) VPN is widely used in the logical division and security isolation of enterprise network resources. Dividing a physical enterprise network into multiple independent "logical networks" is currently an ideal way to realize network resources. assigned technology. [0003] MPLS VPN is an IP VPN based on MPLS technology. It is an IP virtual private network realized by label switching combined with traditional routing technology. It can provide a label for each IP data packet and encapsulate it with the IP data packet i...

Claims

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Application Information

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IPC IPC(8): H04L12/46H04L29/06
Inventor 张帆
Owner GLOBAL INNOVATION AGGREGATORS LLC
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