Multiprotocol Label Switching Architecture (MPLS) Label Values (last updated 2009-05-26) Registries included below: - MPLS Label Values Registry Name: MPLS Label Values Reference: [RFC3032] Registration Procedures: IETF consensus Registry: Value Description Reference ----- --------------------------------- --------- 0 IPv4 Explicit NULL Label [RFC3032] 1 Router Alert Label [RFC3032] 2 IPv6 Explicit NULL Label [RFC3032] 3 Implicit NULL Label [RFC3032] 4-12 Unassigned [RFC3032] 13 GAL Label [RFC-ietf-mpls-tp-gach-gal-06.txt] 14 OAM Alert Label [RFC3429] 15 Unassigned [RFC3032] References ---------- [RFC3032] E. Rosen, D. Tappan, G. Fedorkow, Y. Rekhter, D. Farinacci, T. Li, and A. Conta, "MPLS Label Stack Encoding", RFC 3032, January 2001. [RFC3429] H. Ohta, "Assignment of the 'OAM Alert Lablel' for MPLS Operation and Maintenance (OAM) functions", RFC 3429, November 2002. [RFC-ietf-mpls-tp-gach-gal-06.txt] M. Bocci, Ed., M. Vigoureux, Ed., S. Bryant, "MPLS Generic Associated Channel", RFC XXXX, Month Year. (registry created 2002-11-08) []