Guidelines for this I-d Backward/Forward compatibility with GMPLS RFC’s (RFC 3471/73) Independence between UNI and (E-)NNI (agnosticism) Interworking (at UNI and/or (E-)NNI) must be impact free on GMPLS RFC’s Only define new objects and procedures when strictly needed (max re-use principle) Respectful of the end-to-end principle(s) |