http://www.rfc-editor.org/rfc/rfc3293.txt
RFC 3293: General Switch Management Protocol (GSMP) Packet Encapsulations for Asynchronous Transfer Mode (ATM), Ethernet and Transmission Control Protocol (TCP), T. Worster, A. Doria, J. Buerkle2002-06-01T23:00:00-00:00This memo specifies the encapsulation of GSMP (General Switch Management Protocol) packets in ATM (Asynchronous Transfer Mode), Ethernet and TCP (Transmission Control Protocol). [STANDARDS-TRACK]