http://www.rfc-editor.org/rfc/rfc5063.txt
RFC 5063: Extensions to GMPLS Resource Reservation Protocol (RSVP) Graceful Restart, A. Satyanarayana, R. Rahman2007-10-01T23:00:00-00:00The extensions optionally support the use of Summary Refresh, defined in RFC 2961, to reduce the number of messages exchanged during the Recovery Phase when the restarting node has recovered signaling state locally for one or more Label Switched Paths (LSPs). [STANDARDS-TRACK]