Patent ID: 7742479
Filing Date: 2010-06-22
Classification: H04L

Abstract:
1. A method of adding a subscriber to a virtual private network (VPN), the subscriber having previously been configured with a first network address that is not routable in the VPN, the method comprising: (1) during an interim period in which the subscriber attempts to exchange subscriber data packets with the VPN using the first network address: (2) upon the subscriber reaching an operating condition in which the subscriber can become configured with a new network address: wherein: (i) providing the second network address to the subscriber includes providing the second network address as part of a response indicating that the second network address is to be used in a source address field of the subscriber data packets to identify the subscriber in the VPN; and (ii) subsequently permitting direct, non-translated exchange of the future data packets between the subscriber and the VPN includes receiving the subscriber data packets from the subscriber which include the second network address in the source address field and refraining from performing the network address translation to the second network address in the source address field of the received subscriber data packets.