1. A method of automatically configuring a Service Instance Identifier, I-SID, in a Generalized Multiprotocol Label Switching, GMPLS, controlled network, the method comprising the steps of: identifying a specific I-SID for a specific service in the GMPLS controlled network; and automatically configuring the identified I-SID within a Backbone Edge Bridge, BEB, with a Resource Reservation Protocol-Traffic Engineering, RSVP-TE, extension, wherein the step of automatically configuring the identified I-SID includes one of: carrying the I-SID in a SESSION_ATTRIBUTE object, mapping the I-SID to a Short Call ID field in a session object, carrying the I-SID in an Endpoint ID Type-Length-Value, TLV, of the session object, and carrying the I-SID in a new TLV in a LSP_ATTRIBUTES or CALL_ATTRIBUTES object.