In one embodiment, the invention relates to a method in which at least two aggregation devices, which logically operate as a single device, are interconnected by an Inter Switch Trunk (IST) link. Thereafter, forwarding records of local routing instances between the at least two aggregation devices are...http://www.google.com/patents/US20050007951?utm_source=gb-gplus-sharePatent US20050007951 - Routed split multilink trunking
