Automatic connected virtual private network

Details Automatic connected virtual private network Automatic connected virtual private network

2005-10-27

2010-12-07

Shah, Chirag G (Department: 2477)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S409000

Reexamination Certificate

active

07848335

ABSTRACT:
A virtual private network (VPN) tunnel is established that extends from a source spoke to a destination spoke in a hub-and-spoke enterprise network. Prior to establishing the VPN tunnel, packets are sent from the source spoke to the destination spoke through the hub network. In this manner, packets are not dropped while the VPN tunnel is being set up. The VPN tunnel is established by querying a server for the network address of a destination router in the destination spoke, then setting up the VPN tunnel using a secure communication protocol. An extension to the Internet Key Exchange (IKE) protocol is used to obtain the private network address of the destination router during setup of the VPN tunnel. A forwarding table is updated after the VPN tunnel is established to reroute the packets through the new VPN tunnel.

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Darren Dukes, Configuration Payload <draft-dukes-ikev2-config-payload-00.txt>, http://tools.ietf.org/draft/draft-dukes-ikev2-config-payload/draft-dukes-ikev2-config-payload-00.txt, pp. 1, 6, and 7.

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