Ethernet Numbers (last updated 2012-05-12) NOTE: This page has assignments by IANA as specified in [RFC5342] to be under the IANA OUI. For some information on IEEE 802 number assignments by the IEEE Registration Authority and how to contact that authority, see the "IEEE 802 Numbers" IANA web page. Registries included below: - IANA MAC ADDRESS BLOCK - IANA Unicast 48-bit MAC Addresses - IANA Multicast 48-bit MAC Addresses - IANA 64-bit MAC Addresses - The CFxxxx Series - SNAP PROTOCOL IDs Registry: IANA MAC ADDRESS BLOCK Reference: [RFC5342] Registration Procedures: See [RFC5342] Note: IANA allocates addresses under the IANA OUI (00-00-5E) as explained in RFC 5342. Unicast address under the IANA OUI start with 00-00-0E, while multicast addresses under the IANA OUI start with 01-00-0E. In the lists below, these initial 3 bytes are omitted for brevity. As described in RFC 5342, 48-bit MAC addresses in the range 33-33-00-00-00-00 to 33-33-FF-FF-FF-FF are used for IPv6 multicast. Sub-registry: IANA Unicast 48-bit MAC Addresses Note: These values are prefixed with 00-00-5E. Addresses Usage Reference -------------------- ---------------------------------------------------- --------- 00-00-00 to 00-00-FF Reserved [RFC5342] 00-01-00 to 00-01-FF VRRP (Virtual Router Redundancy Protocol) [RFC3768] 00-02-00 to 00-02-FF VRRP IPv6 (Virtual Router Redundancy Protocol IPv6) [RFC5798] 00-03-00 to 00-51-FF Unassigned [RFC5342] 00-52-00 to 00-52-12 Unassigned (small allocations) [RFC5342] 00-52-13 Proxy Mobile IPv6 [RFC6543] 00-52-14 to 00-52-FF Unassigned (small allocations) [RFC5342] 00-53-00 to FF-FF-FF Unassigned [RFC5342] Sub-registry: IANA Multicast 48-bit MAC Addresses Note: These values are prefixed with 01-00-5E. Addresses Usage Reference ------------------------ -------------------- --------- 00-00-00 to 7F-FF-FF IPv4 Multicast [RFC1112] 80-00-00 to 8F-FF-FF MPLS Multicast [RFC5332] 90-00-00 MPLS-TP p2p [draft-ietf-mpls-tp-ethernet-addressing] 90-00-01 to 90-00-FF Available (small allocations) [RFC5342] A0-00-00 to FF-FF-FF Available [RFC5342] Sub-registry: IANA 64-bit MAC Addresses Note: These values are prefixed with 02-00-5E for unicast or 03-00-5E for multicast. See RFC 5342 for more details. Addresses Usage Reference --------------------------------- -------------------- --------- 00-00-00-00-00 to 0F-FF-FF-FF-FF Reserved [RFC5342] 10-00-00-00-00 to EF-FF-FF-FF-FF Available [RFC5342] F0-00-00-00-00 to FD-00-00-00-00 Reserved [RFC5342] FE-00-00-00-00 to FE-FF-FF-FF-FF IPv4 Addr Holders [RFC5342] FF-00-00-00-00 to FF-FD-FF-FF-FF Reserved [RFC5342] FF-FE-00-00-00 to FF-FE-FF-FF-FF IANA EUI-48 Holders [RF5342] FF-FF-00-00-00 to FF-FF-FF-FF-FF Reserved [RFC5342] Registry: The CFxxxx Series Note: [RFC 2153] described a method of using a "pseudo OUI" for certain purposes when there is no appropriate regular OUI assigned. The registry for these is on the PPP Parameters IANA web page. The CF series registry has been closed by RFC 5342. Please see: http://www.iana.org/assignments/ppp-numbers Registry: SNAP PROTOCOL IDs Reference: [RFC5342] Registration Procedures: Expert Review The SNAP PID assignments using the IANA's OUI are: Protocol ID Description References --------------------- --------------------------------- ---------- decimal Hex ---------- --------- 0000 0000 reserved [RFC5342] 0001 0001 MARS Data Messages (short form) [RFC2022] 0002 0002 reserved for future NHRP use [RFC2332] 0003 0003 MARS/NHRP Control Messages [RFC2022][RFC2332] 0004 0004 MARS Data Messages (long form) [RFC2022] 0005 0005 SCSP - Server Cache Sync Protocol [RFC2334] 0006 0006 VRID - Virtual Router MAC Address [Knight] 0007 0007 L2TP [RFC3070] 0008 0008 Virtual Private Network ID [RFC2684] 0009-65534 0009-FFFE Unassiged [RFC5342] 65535 FFFF Reserved [RFC5342] References ---------- [RFC1112] Deeering, S., "Host Extensions for IP Multicasting", STD 5, RFC 1112, Stanford University, August 1989. [RFC2022] Armitage, G., "Support for Multicast over UNI 3.0/3.1 based ATM Networks", RFC 2022, Bellcore, November 1996. [RFC2332] Luciani, J., et al, "NBMA Next Hop Resolution Protocol (NHRP)", RFC 2332, April 1998. [RFC2334] Luciani, J., et al, "Server Cache Synchronization Protocol (SCSP)", RFC 2334, April 1998. [RFC2684] D. Grossman, J. Heinanen, "Multiprotocol Encapsulation over ATM Adaptation Layer 5", RFC 2684, September 1999. [RFC3070] Rawat, V., R. Tio, S. Nanji, and R. Verma, "Layer Two Tunneling Protocol (L2TP) over Frame Relay", RFC 3070, February 2001. [RFC3768] R. Hinden, Ed., "Virtual Router Redundancy Protocol (VRRP)", RFC 3768, April 2004. [RFC5332] T. Eckert, E. Rosen, Ed., R. Aggarwal, Y. Rekhter, "MPLS Multicast Encapsulations", RFC 5332, August 2008. [RFC5342] D. Eastlake, "IANA Considerations and IETF Protocol Usage for IEEE 802 Parameters", RFC 5342, September 2008. [RFC6543] S. Gundavelli, "Reserved IPv6 Interface Identifier for Proxy Mobile IPv6", RFX 6543, May 2012. [draft-ietf-mpls-tp-ethernet-addressing] D. Frost, Ed., S. Bryant, Ed., M. Bocci, Ed. "MPLS-TP Next-Hop Ethernet Addressing", RFC XXXX, Month Year. People ------ [Knight] S. Knight, , November 1997. []