EXTERNALLY CONTROLLED REACHABILITY IN VIRTUAL PRIVATE NETWORKS

摘要

A network that supports VPNs is enhanced to allow users in one VPN to communicate with users in another VPN in the course of executing a predefine d application, such as VoIP. This capability is achieved dynamically by enabli ng a device that can communicate with the network elements that operate to normally prohibit inter-VPN communication to direct those network elements to enable such communication, at least for the purposes of specific applications.