Alcatel France Telecom In various situations, it would be useful to include aggregated path parameters such as, e.g., delay, hop-count or optical power, within Generalized MPLS signaling. For that purpose, this draft extends GMPLS RSVP-TE, for signaling end-to-end path constraint, and aggregating path parameters along the path. This draft only defines generic encoding rules and procedures. Specific encoding and procedures for each path parameter will be addressed in separate documents.