Method and device for binding public network link for ADVPN (auto discovery virtual private network) tunnel

Abstract

The invention discloses a method and a device for binding a public network link for an ADVPN (auto discovery virtual private network) tunnel. The method comprises the following steps: binding a tunnel interface and a target network segment of a public network by an ADVPN node; inquiring an output interface in a route, corresponding to the target network segment of the public network, acquired by a routing table, and determining the output interface to be a public network interface which is bound by the tunnel interface at present; when the output interface in the route corresponding to the target network segment of the public network changes, updating a public network interface which is bound by the tunnel interface at present to be the updated output interface in the route corresponding to the target network segment of the public network by the ADVPN node, wherein an address of the public network interface which is bound by the tunnel interface at present is used for encapsulating a private network data message into a public network data message. By the application of the method and the device disclosed by the invention, configuration and operation can be simplified; the network reliability is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and a device for binding an ADVPN tunnel to a public network link. Background technique [0002] The Auto Discovery Virtual Private Network (ADVPN) tunnel is a point-to-multipoint Layer 3 tunnel. By binding the public network link to the ADVPN tunnel, multiple branches of the private network can communicate with each other. Private network data packets. [0003] The devices at both ends of the ADVPN tunnel are called ADVPN nodes, which can be the central device of the VPN network, that is, the Hub, or the branch devices of the VPN network, that is, the Spoke. In the ADVPN network, the private network address and the public network address of the ADVPN node are managed and maintained through the VPN Address Management (VAM) protocol. Specifically, the ADVPN node registers its own public network address and private network address with the VAM server, etc. Informa...

AI Technical Summary

Problems solved by technology

[0012] It can be seen that the current method of binding public network links for ADVPN nodes requires more complicated configuration operations

Moreover, when there are more than two sets of ADVPN networks in the network, it will also increase the performance pressure on the Hub

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