Protection switching of a virtual private network is provided whereby working VPN paths and protection VPN paths are defined. The working VPN path is monitored for increased data traffic and failures, and in response, data is switched from the working VPN path to the protection VPN path. The working...http://www.google.com.au/patents/US7082101?utm_source=gb-gplus-sharePatent US7082101 - Method and apparatus for protection switching in virtual private networks
