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Virtual private network (VPN) routing information publication method and equipment

A technology of information publishing and routing, applied in the field of communication to achieve the effect of improving security

Active Publication Date: 2012-08-01
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in specific applications, there are inevitably potential safety hazards due to planning issues

Method used

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  • Virtual private network (VPN) routing information publication method and equipment
  • Virtual private network (VPN) routing information publication method and equipment
  • Virtual private network (VPN) routing information publication method and equipment

Examples

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Embodiment Construction

[0038] In order to solve the problem of insecure private network routes in the existing nested VPN route distribution mechanism, in the embodiment of the present invention, after the border device receives the VPN route issued by the connected border device or peer border device, it sends the local The IRT of the VPN is matched with the ERT of the corresponding VPN in the attribute information of the received VPN routing information to determine whether to update the local routing table and further spread to other border devices in the downstream direction, and when the judgment needs to be sent to the downstream When the border device spreads, it only spreads to the border device corresponding to the corresponding VPN, thereby improving the security of the private network route.

[0039] Take a sub-VPN embedded in a user network VPN in an MPLS L3VPN network, and the user network VPN is deployed on user network 1 and user network 2 as an example. When the underlying user border...

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Abstract

The invention discloses a virtual private network (VPN) routing information publication method and VPN routing information publication equipment, and is applied to a multi-protocol label switch layer-three virtual private network (MPLS L3VPN). The method comprises the following steps that: a customer edge receives a routing publication message from an uplink customer edge or an opposite-end customer edge, wherein the routing publication message carries nested VPN routing information and VPN attribute information; and the customer edge matches an import route target (IRT) of a local VPN and an export route target (ERT) of a VPN of a specified type in the VPN attribute information carried by the message, updates a local routing table according to the VPN routing information if the IRT of the local VPN is matched with the ERT of the VPN of the specified type, changes the specified type into the next-layer nested ERT of the ERT of the conventional specified type in the VPN attribute information, and transmits the routing publication message carrying the nested VPN routing information and the VPN attribute information to a corresponding VPN according to the matched IRT of the local VPN. The security of nested VPN routing publication can be improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for publishing VPN routing information applied to MPLSL3VPN networking. Background technique [0002] MPLS (Multi-Protocol Label Switching, Multi-Protocol Label Switching) L3VPN (Virtual Private Network, virtual private network) is a PE (Provider Edge, operator border device)-based L3VPN technology in the service provider VPN solution, which uses BGP (Border Gateway Protocol, Border Gateway Protocol) advertises VPN routes on the service provider backbone network, and uses MPLS to forward VPN packets on the service provider backbone network. [0003] The division of CE (Customer Edge, user edge equipment) and PE is mainly based on the management scope of service providers and users, and CE and PE are the boundaries of the management scope of the two. [0004] The CE device is usually a router. After the CE establishes an adjacency relationship with the directly conne...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L45/50
Inventor 赵昌峰
Owner XINHUASAN INFORMATION TECH CO LTD
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