A Fibre Channel router used to join fabrics. EX_ports are used to connect to the fabrics. The EX_port joins the fabric but the router will not merge into the fabric. Ports in the Fibre Channel router can be in a fabric, but other ports can be connected to other fabrics. Fibre Channel routers can be interconnected...http://www.google.es/patents/US20060023708?utm_source=gb-gplus-sharePatente US20060023708 - Interfabric routing header for use with a backbone fabric
Interfabric routing header for use with a backbone fabric