IANA Considerations and IETF Protocol and Documentation Usage for IEEE 802 Parameters
draft-eastlake-rfc7042bis-04
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Joe Abley
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Network Working Group D. Eastlake
INTERNET-DRAFT Futurewei Technologies
Obsoletes: 7042 J. Abley
Intended Status: Best Current Practice Hopcount
Expires: September 15, 2021 March 16, 2021
IANA Considerations and IETF Protocol and Documentation Usage
for IEEE 802 Parameters
<draft-eastlake-rfc7042bis-04.txt>
Abstract
Some IETF protocols make use of Ethernet frame formats and IEEE 802
parameters. This document discusses several uses of such parameters
in IETF protocols, specifies IANA considerations for assignment of
points under the IANA OUI (Organizationally Unique Identifier), and
provides some values for use in documentation. This document
obsoletes RFC 7042.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Distribution of this document is unlimited. Comments should be sent
to the authors.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet-
Drafts.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at
http://www.ietf.org/1id-abstracts.html. The list of Internet-Draft
Shadow Directories can be accessed at
http://www.ietf.org/shadow.html.
D. Eastlake & J. Abley [Page 1]
INTERNET-DRAFT IANA/IETF and IEEE 802 Parameters
Table of Contents
1. Introduction............................................3
1.1 Notations Used in This Document........................3
1.2 Changes from RFC 7042..................................4
1.3 The IEEE Registration Authority........................5
1.4 The IANA Organizationally Unique Identifier............5
1.5 CFM Code Points........................................5
2. Ethernet Identifier Parameters..........................6
2.1 48-Bit MAC Identifiers, OUIs, and Other Prefixes.......6
2.1.1 Special First Octet Bits.............................7
2.1.2 OUIs and CIDs........................................8
2.1.3 EUI-48 Assignments under the IANA OUI................9
2.1.4 EUI-48 Documentation Values.........................10
2.1.5 EUI-48 IANA Assignment Considerations...............10
2.2 64-Bit MAC Identifiers................................11
2.2.1. IPv6 Use of Modified EUI-64 Identifiers............11
2.2.2 EUI-64 IANA Assignment Considerations...............13
2.2.3 EUI-64 Documentation Values.........................14
2.3 Other 48-bit MAC Identifiers Used by the IETF.........15
2.3.1 Identifiers Prefixed '33-33'........................15
2.3.2 The 'CF Series'.....................................15
2.3.2.1 Changes to RFC 2153...............................16
3. Ethernet Protocol Parameters...........................17
3.1 Ethernet Protocol Assignment under the IANA OUI.......18
3.2 Documentation Protocol Number.........................19
4. Other OUI-Based Parameters............................20
5. IANA Considerations...................................21
5.1 Expert Review and IESG Ratification...................21
5.2 MAC Address AFNs and RRTYPEs..........................22
5.3 Informational IANA Web Page Material..................23
5.4 OUI Exhaustion........................................23
5.5 IANA OUI MAC Address Table............................23
5.6 SNAP Protocol Number Table and Assignment.............24
6. Security Considerations................................25
7. Acknowledgements.......................................25
Normative References......................................26
Informative References....................................26
Appendix A. Templates.....................................29
A.1 EUI-48/EUI-64 Identifier or Identifier Block Template.29
A.2 IANA OUI-Based Protocol Number Template...............29
A.3 Other IANA OUI-Based Parameter Template...............30
Appendix B. Ethertypes...................................31
B.1. Some Ethertypes Specified by the IETF...............31
B.2. Some IEEE 802 Ethertypes............................31
Authors' Addresses........................................33
D. Eastlake & J. Abley [Page 2]
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1. Introduction
Some IETF protocols use Ethernet or other IEEE 802-related
communication frame formats and parameters [IEEE802]. These include
MAC (Media Access Control) addresses and protocol identifiers.
This document specifies IANA considerations for the assignment of
code points under the IANA OUI including MAC addresses and protocol
identifiers. It also discusses several other uses by the IETF of
IEEE 802 code points, including IEEE 802 Connectivity Fault
Management (CFM) code points [RFC7319], and provides some values for
use in documentation. As noted in [RFC2606] and [RFC5737], the use
of designated code values reserved for documentation and examples
reduces the likelihood of conflicts and confusion arising from their
duplication of code points assigned for some deployed use.
[RFC8126] is incorporated herein except where there are contrary
provisions in this document. In this document, "IESG Ratification"
is used in some cases. IESG Ratification is specified in Section 5.1.
It is not the same as "IESG Approval" in [RFC8126].
1.1 Notations Used in This Document
This document uses hexadecimal notation. Each octet (that is, 8-bit
byte) is represented by two hexadecimal digits giving the value of
the octet as an unsigned integer. Successive octets are separated by
a hyphen. This document consistently uses IETF ("network") bit
ordering although the physical order of bit transmission within an
octet on an IEEE [802.3] link is from the lowest order bit to the
highest order bit (i.e., the reverse of the IETF's ordering).
In this document:
"AFN" Address Family Number [RFC4760].
"CFM" Connectivity Fault Managment [RFC7319].
"CID" Company Identifier.
"EUI" Extended Unique Identifier.
"IAB" Individual Address Block, not Internet Architecture Board.
"IEEE" Institute for Electrical and Electronics Engineers
(www.ieee.org).
"IEEE-SA" IEEE Standards Association (standards.ieee.org).
D. Eastlake & J. Abley [Page 3]
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"MA-L" MAC Address Block Large, commonly referred to as an OUI.
"MA-M" MAC Address Block Medium.
"MA-S" MAC Address Block Small.
"MAC" Media Access Control, not for Message Authentication Code.
"MAC-48" A 48-bit MAC address. This term is obsolete. If globally
unique, use EUI-48.
"OUI" Organizationally Unique Identifier. An OUI is now officially
calle "MA-L" by the IEEE.
"RRTYPE" A DNS Resource Record type [RFC6895].
"SLAP" IEEE 802 Structured Local Address Plan [802_O&A].
"TLV" Type, Length, Value.
"**" This symbol indicates exponentiation. For example, 2**24 is
two to the twenty-fourth power.
1.2 Changes from RFC 7042
This document obsoletes [RFC7042] and makes the changes listed below.
However, the completed application template based upon which an IANA
OUI-based protocol number value was assigned for document use remains
that in Appendix C of RFC 7042.
o Adds information on MA-M (28-bit) and MA-S (36-bit) EUI prefixes
that the IEEE Registration Authority assignes.
o Adds information on the restructuring of the "local" MAC address
space into four quadrants under the Structured Local Address Plan
(SLAP [802_O&A]).
o Mentions that IEEE 802 CFM Codepoints that have been allocated to
the IETF (see Section 1.5).
o Clarifies minor details in Section 5.1 on Expert Review and IESG
Ratification.
D. Eastlake & J. Abley [Page 4]
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1.3 The IEEE Registration Authority
Originally the responsibility of Xerox Corporation, the registration
authority for Ethernet parameters is now the IEEE Registration
Authority, available on the web at:
http://standards.ieee.org/regauth/
The IEEE Registration Authority operates under the direction of the
IEEE-SA Board of Governors. Anyone may apply to that Authority for
parameter assignments. The IEEE Registration Authority may impose
fees or other requirements but commonly waives fees for applications
from standards development organizations.
Lists of some assignments and their holders are downloadable from the
IEEE Registration Authority site.
1.4 The IANA Organizationally Unique Identifier
The Organizationally Unique Identifier (OUI) 00-00-5E has been
assigned to IANA by the IEEE Registration Authority.
There is no OUI value reserved at this time for documentation, but
there are documentation code points under the IANA OUI specified
below.
1.5 CFM Code Points
The IEEE has allocated two blocks of 802 Connectivity Fault
Management (CFM) code points to the IETF, one for CFM OpCodes and one
for CFM TLV Types. Further information, including IANA
considerations for assignment of values from these block for IETF
use, are given in [RFC7319]. This document does not further discuss
these blocks of codepoints.
D. Eastlake & J. Abley [Page 5]
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2. Ethernet Identifier Parameters
Section 2.1 discusses 48-bit MAC identifiers, their relationship to
OUIs and other prefixes, and assignment under the IANA OUI. Section
2.2 extends this to 64-bit identifiers. Section 2.3 discusses other
IETF MAC identifier use not under the IANA OUI. ([RAC_OUI] indicates
that the IEEE Registration Authority Committee was at one time
exploring the feasibility of defining 128-bit identifiers. [RAC_OUI]
is an expired draft that also provides additional historic
information on [IEEE802] registries.)
2.1 48-Bit MAC Identifiers, OUIs, and Other Prefixes
48-bit MAC "addresses" are the most commonly used Ethernet interface
identifiers. Those that are globally unique are also called EUI-48
identifiers (Extended Unique Identifier 48). An EUI-48 is structured
into an initial prefix assigned by the IEEE Registration Authority
and additional bits assigned by the prefix owner. Currently there
are three lengths of prefixes assigned as shown in the table below;
however, some prefix bits have special meaning as shown in Figure 1.
Prefix Length Owner Supplied Bits
in bits Name for EUI-48
------------- ------ --------------------
24 MAC-L (OUI) 24
28 MAC-M 20
36 MAC-S 12
Actually, the bottom four bits, as shown below, of the first octet of
the 3-octet 48-bit MAC have speical meaning and are referred to below
as the M, X, Y, and Z bits.
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| . . . . Z Y X M| . . . . . . . .| octets 0&1
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| . . . . . . . .| . . . . . . . .| octets 2&3
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| . . . . . . . .| . . . . . . . .| octets 4&5
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
Figure 1. 48-bit MAC Address Structure
A 3-octet OUI (Organizationally Unique Identifier) is followed by an
additional 3 octets assigned by the OUI holder or there may be a
larger initial prefix assigned to an organization and a shorter
sequence of additional bits so as to add up to 48 bits in total. For
D. Eastlake & J. Abley [Page 6]
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example, the IEEE has assigned IABs (Individual Address Blocks),
where the first 4 1/2 octets (36 bits) are assigned, giving the
holder of the IAB 1 1/2 octets (12 bits) they can control; however,
IABs have become historic, and a wider range of prefix lengths are
available [RAC_OUI].
The IEEE describes its assignment procedures and policies for IEEE
802-related identifiers in [802_O&A]. An IEEE tutorial on EUIs, OUIs,
and CIDs is available at [IEEEtutorial].
2.1.1 Special First Octet Bits
Four bits within the initial octet of an IEEE MAC interface
identifier, such as an EUI-48, have special significance [802_O&A] as
follows:
M bit --- This bit always indicates a group address and is
frequently referred to as the group bit. If it is zero,
the MAC address is unicast. If it is a one, the address is
multicast or broadcast. This meaning is independent of the
values of the X, Y, and Z bits.
X bit --- This bit was previously called the "local" bit. If it is
zero, the MAC address is a global address under the
control of the owner of the IEEE assigned prefix.
Previously, if it was a one, the MAC address was
considered "local" and under the assignment and control of
the local network operator (but see Section 2.3). Now, if
it is a one, the nature of the MAC address is optionally
determined by the Y and Z bits under the IEEE 802
Structured Local Address Plan (SLAP) as described below.
Y&Z bits - These two bits have no special meaning if the X bit is
zero. If the X bit is one, these two bits divide the
formerly uniform "local" MAC address space into four
quadrants, as follows. These quadrants are further
described below.
Y bit Z bit Quadrant
----- ----- -----------
0 0 Administratively Assigned
0 1 Extended Local
1 0 Reserved
1 1 Standard Assigned
While a local network administrator can assign any addresses with the
X bit a one, the optional SLAP characterizes the four quadrants of
the "local" address space using the Y and Z bits as follows:
D. Eastlake & J. Abley [Page 7]
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Administratively Assigned - MAC addresses in this quadrant are
called Administratively Assigned Identifiers. This is
intended for arbitrary local assignment such as random
assignment; however, see Section 2.3.1.
Extended Local - MAC addresses in this quadrant are called
Extended Local Identifiers. These addresses are not
actually "local" under SLAP. They are available to the
organization that has been assigned the CID (see Section
xxx) specifying the other 20 bits of the 24 bit prefix
with X, Y, Z bits 1, 0, 1 respectively.
Reserved - MAC addresses in this quadrant are reserved for future
use under the SLAP. Until such future use, they could be
locally assigned as Administratively Assigned Identifiers
are assigned but there is a danger that future SLAP use
would conflict with such local assignments.
Standard Assigned - MAC addresses in this quadrant are known as
Standard Assigned Identifiers. It is intended that such
addresses be assigned and possibly revoked through a
local protocol. There is work in the IEEE [802.1CQ] and
the IETF [RFC8947] [RFC8948] related to such protocols.
2.1.2 OUIs and CIDs
OUI, MAC-M, and MAC-S MAC prefixes are assigned with the Local bit
zero and the Group bit unspecified. Multicast identifiers may be
constructed by turning on the Group bit, and unicast identifiers may
be constructed by leaving the Group bit zero.
The Local bit is zero for globally unique EUI-48 identifiers assigned
by the owner of an OUI or owner of a longer prefix. If the Local bit
is a one, the identifier has been considered by IEEE 802 to be a
local identifier under the control of the local network
administrator; however, there are now recommendations on
optionalmanagement of the local address space as discussed in Section
2.1.1. If the Local bit is on, the holder of an OUI has no special
authority over MAC identifiers whose first 3 octets correspond to
their OUI or the beginning of their longer prefix.
An AFN and a DNS RRTYPE have been assigned for 48-bit MAC addresses
(see Section 5.2).
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2.1.3 EUI-48 Assignments under the IANA OUI
The OUI 00-00-5E has been assigned to IANA as stated in Section 1.4
above. This includes 2**24 EUI-48 multicast identifiers from
01-00-5E-00-00-00 to 01-00-5E-FF-FF-FF and 2**24 EUI-48 unicast
identifiers from 00-00-5E-00-00-00 to 00-00-5E-FF-FF-FF.
Of these EUI-48 identifiers, the sub-blocks reserved or thus far
assigned by IANA for purposes of documentation are as follows:
Unicast, all blocks of 2**8 addresses thus far:
00-00-5E-00-00-00 through 00-00-5E-00-00-FF: reserved and require
IESG Ratification for assignment (see Section 5.1).
00-00-5E-00-01-00 through 00-00-5E-00-01-FF: assigned for the
Virtual Router Redundancy Protocol (VRRP) [RFC5798].
00-00-5E-00-02-00 through 00-00-5E-00-02-FF: assigned for the IPv6
Virtual Router Redundancy Protocol (IPv6 VRRP) [RFC5798].
00-00-5E-00-52-00 through 00-00-5E-00-52-FF: used for very small
assignments. Currently, 4 out of these 256 values have been
assigned.
00-00-5E-00-53-00 through 00-00-5E-00-53-FF: assigned for use in
documentation.
00-00-5E-90-01-00 through 00-00-5E-90-01-FF: used for very small
assignments that need paralesl unicast and multicast MAC
addresses. Currently 1 out of these 256 values has been
assigned.
Multicast:
01-00-5E-00-00-00 through 01-00-5E-7F-FF-FF: 2**23 addresses
assigned for IPv4 multicast [RFC1112].
01-00-5E-80-00-00 through 01-00-5E-8F-FF-FF: 2**20 addresses
assigned for MPLS multicast [RFC5332].
01-00-5E-90-00-00 through 01-00-5E-90-00-FF: 2**8 addresses being
used for very small assignments. Currently, 4 out of these 256
values have been assigned.
01-00-5E-90-10-00 through 01-00-5E-90-10-FF: 2**8 addresses for
use in documentation.
D. Eastlake & J. Abley [Page 9]
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01-00-5E-90-01-00 through 01-00-5E-90-01-FF: used for very small
assignments that need paralesl unicast and multicast MAC
addresses. Currently 1 out of these 256 values has been
assigned.
For more detailed and up-to-date information, see the "Ethernet
Numbers" registry at http://www.iana.org.
2.1.4 EUI-48 Documentation Values
The following values have been assigned for use in documentation:
00-00-5E-00-53-00 through 00-00-5E-00-53-FF for unicast and
01-00-5E-90-10-00 through 01-00-5E-90-10-FF for multicast.
2.1.5 EUI-48 IANA Assignment Considerations
EUI-48 assignments under the current or a future IANA OUI (see
Section 5.4) must meet the following requirements:
o must be for standards purposes (either for an IETF Standard or
other standard related to IETF work),
o must be for a power-of-two size block of identifiers starting
at a boundary that is an equal or greater power of two,
including the assignment of one (2**0) identifier,
o must not be used to evade the requirement for vendors to obtain
their own block of identifiers from the IEEE, and
o must be documented in an Internet-Draft or RFC.
In addition, approval must be obtained as follows (see the procedure
in Section 5.1):
Small to medium assignments of a block of 1, 2, 4, ..., 32768,
65536 (2**0, 2**1, 2**2, ..., 2**15, 2**16) EUI-48 identifiers
require Expert Review (see Section 5.1).
Large assignments of 131072 (2**17) or more EUI-48 identifiers
require IESG Ratification (see Section 5.1).
D. Eastlake & J. Abley [Page 10]
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2.2 64-Bit MAC Identifiers
IEEE also defines a system of 64-bit MAC identifiers including
EUI-64s. EUI-64 identifiers are currently used as follows:
o In a modified form to construct some IPv6 interface identifiers
as described in Section 2.2.1
o In IEEE Std 1394 (also known as FireWire and i.Link)
o In IEEE Std 802.15.4 (also known as ZigBee)
o In [InfiniBand]
Adding a 5-octet (40-bit) extension to a 3-octet (24-bit) OUI, or a
shorter extension to longer assigned prefixes [RAC_OUI] so as to
total 64 bits, produces an EUI-64 identifier under that OUI or longer
prefix. As with EUI-48 identifiers, the first octet has the same
Group and Local bits.
An AFN and a DNS RRTYPE have been assigned for 64-bit MAC addresses
(see Section 5.2).
The discussion below is almost entirely in terms of the "Modified"
form of EUI-64 identifiers; however, anyone assigned such an
identifier can also use the unmodified form as a MAC identifier on
any link that uses such 64-bit identifiers for interfaces.
2.2.1. IPv6 Use of Modified EUI-64 Identifiers
MAC-64 identifiers are used to form the lower 64 bits of some IPv6
addresses (Section 2.5.1 and Appendix A of [RFC4291] and Appendix A
of [RFC5214]). When so used, the MAC-64 is modified by inverting the
Local/Global bit to form an IETF "Modified EUI-64 identifier". Below
is an illustration of a Modified EUI-64 unicast identifier under the
IANA OUI, where aa-bb-cc-dd-ee is the extension.
02-00-5E-aa-bb-cc-dd-ee
The first octet is shown as 02 rather than 00 because, in Modified
EUI-64 identifiers, the sense of the Local/Global bit is inverted
compared with EUI-48 identifiers. It is the globally unique values
(universal scope) that have the 02 bit on in the first octet, while
those with this bit off are locally assigned and out of scope for
global assignment.
The Local/Global bit was inverted to make it easier for network
operators to type in local-scope identifiers. Thus, such Modified
D. Eastlake & J. Abley [Page 11]
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EUI-64 identifiers as 1, 2, etc. (ignoring leading zeros) are local.
Without the modification, they would have to be
02-00-00-00-00-00-00-01, 02-00-00-00-00-00-00-02, etc. to be local.
As with 48-bit MAC identifiers, the 01 bit on in the first octet
indicates a group identifier.
When the first two octets of the extension of a Modified EUI-64
identifier are FF-FE, the remainder of the extension is a 24-bit
value as assigned by the OUI owner for an EUI-48. For example:
02-00-5E-FF-FE-yy-yy-yy
or
03-00-5E-FF-FE-yy-yy-yy
where yy-yy-yy is the portion (of an EUI-48 global unicast or
multicast identifier) that is assigned by the OUI owner (IANA in this
case). Thus, any holder of one or more EUI-48 identifiers under the
IANA OUI also has an equal number of Modified EUI-64 identifiers that
can be formed by inserting FF-FE in the middle of their EUI-48
identifiers and inverting the Local/Global bit.
(Note: [EUI-64] defines FF-FF as the bits to be inserted to create
an IEEE EUI-64 identifier from a EUI-48 identifier. That document
says the FF-FE value is used when starting with an EUI-48
identifier. The IETF uses only FF-FE to create Modified EUI-64
identifiers from 48-bit Ethernet station identifiers regardless of
whether they are EUI-48 or 48-bit local MAC identifiers. EUI-48
and local 48-bit MAC identifiers are syntactically equivalent, and
this doesn't cause any problems in practice.)
In addition, certain Modified EUI-64 identifiers under the IANA OUI
are reserved for holders of IPv4 addresses as follows:
02-00-5E-FE-xx-xx-xx-xx
where xx-xx-xx-xx is a 32-bit IPv4 address. The owner of an IPv4
address has both the unicast- and multicast-derived EUI-64 address.
Modified EUI-64 identifiers from
02-00-5E-FE-F0-00-00-00 to 02-00-5E-FE-FF-FF-FF-FF
are effectively reserved pending the specification of IPv4 Class E
addresses. However, for Modified EUI-64 identifiers based on an IPv4
address, the Local/Global bit should be set to correspond to whether
the IPv4 address is local or global. (Keep in mind that the sense of
the Modified EUI-64 identifier Local/Global bit is reversed from that
in (unmodified) MAC-64 identifiers.)
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2.2.2 EUI-64 IANA Assignment Considerations
The following table shows which Modified EUI-64 identifiers under the
IANA OUI are reserved, assigned, or available as indicated. As noted
above, the corresponding MAC addresses can be determined by
complementing the 02 bit in the first octet. In all cases, the
corresponding multicast 64-bit MAC addresses formed by complementing
the 01 bit in the first octet have the same status as the modified
64-bit unicast address blocks listed below.
02-00-5E-00-00-00-00-00 to 02-00-5E-0F-FF-FF-FF-FF reserved
02-00-5E-10-00-00-00-00 to 02-00-5E-10-00-00-00-FF assigned for
documentation use
02-00-5E-10-00-00-01-00 to 02-00-5E-EF-FF-FF-FF-FF available for
assignment
02-00-5E-F0-00-00-00-00 to 02-00-5E-FD-FF-FF-FF-FF reserved
02-00-5E-FE-00-00-00-00 to 02-00-5E-FE-FF-FF-FF-FF assigned to
IPv4 address holders as described above
02-00-5E-FF-00-00-00-00 to 02-00-5E-FF-FD-FF-FF-FF reserved
02-00-5E-FF-FE-00-00-00 to 02-00-5E-FF-FE-FF-FF-FF assigned for
holders of EUI-48 identifiers under the IANA OUI as described
above
02-00-5E-FF-FF-00-00-00 to 02-00-5E-FF-FF-FF-FF-FF reserved
The reserved identifiers above require IESG Ratification (see Section
5.1) for assignment. IANA EUI-64 identifier assignments under the
IANA OUI must meet the following requirements:
o must be for standards purposes (either for an IETF Standard or
other standard related to IETF work),
o must be for a power-of-two size block of identifiers starting
at a boundary that is an equal or greater power of two,
including the assignment of one (2**0) identifier,
o must not be used to evade the requirement for vendors to obtain
their own block of identifiers from the IEEE, and
o must be documented in an Internet-Draft or RFC.
In addition, approval must be obtained as follows (see the procedure
in Section 5.1):
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Small to medium assignments of a block of 1, 2, 4, ..., 134217728,
268435456 (2**0, 2**1, 2**2, ..., 2**27, 2**28) EUI-64
identifiers require Expert Review (see Section 5.1).
Assignments of any size, including 536870912 (2**29) or more
EUI-64 identifiers, may be made with IESG Ratification (see
Section 5.1).
2.2.3 EUI-64 Documentation Values
The following blocks of unmodified 64-bit MAC addresses are for
documentation use. The IPv4-derived addresses are based on the IPv4
documentation addresses [RFC5737], and the MAC-derived addresses are
based on the EUI-48 documentation addresses above.
Unicast Values for Documentation Use:
00-00-5E-EF-10-00-00-00 to 00-00-5E-EF-10-00-00-FF general
00-00-5E-FE-C0-00-02-00 to 00-00-5E-FE-C0-00-02-FF and
00-00-5E-FE-C6-33-64-00 to 00-00-5E-FE-C6-33-64-FF and
00-00-5E-FE-CB-00-71-00 to 00-00-5E-FE-CB-00-71-FF IPv4 derived
00-00-5E-FF-FE-00-53-00 to 00-00-5E-FF-FE-00-53-FF EUI-48 derived
00-00-5E-FE-EA-C0-00-02 and
00-00-5E-FE-EA-C6-33-64 and
00-00-5E-FE-EA-CB-00-71 IPv4 multicast derived from IPv4 unicast
[RFC6034]
Multicast Values for Documentation Use:
01-00-5E-EF-10-00-00-00 to 01-00-5E-EF-10-00-00-FF general
01-00-5E-FE-C0-00-02-00 to 01-00-5E-FE-C0-00-02-FF and
01-00-5E-FE-C6-33-64-00 to 01-00-5E-FE-C6-33-64-FF and
01-00-5E-FE-CB-00-71-00 to 01-00-5E-FE-CB-00-71-FF IPv4 derived
01-00-5E-FE-EA-C0-00-02 and
01-00-5E-FE-EA-C6-33-64 and
01-00-5E-FE-EA-CB-00-71 IPv4 multicast derived from IPv4 unicast
[RFC6034]
01-00-5E-FF-FE-90-10-00 to 01-00-5E-FF-FE-90-10-FF EUI-48 derived
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2.3 Other 48-bit MAC Identifiers Used by the IETF
There are two other blocks of 48-bit MAC identifiers that are used by
the IETF as described below.
2.3.1 Identifiers Prefixed '33-33'
All 48-bit multicast MAC identifiers prefixed "33-33" (that is, the
2**32 multicast MAC identifiers in the range from 33-33-00-00-00-00
to 33-33-FF-FF-FF-FF) are used as specified in [RFC2464] for IPv6
multicast. In all of these identifiers, the Group bit (the bottom
bit of the first octet) is on, as is required to work properly with
existing hardware as a multicast identifier. They also have the
Local bit on but any ethernet using standard IPv6 multicast should
note that these addresses will be used for that purpose. These
multicast MAC addresses fall into the administratively assigned SLAP
quadrant (see Section 2.1.1).
(Historical note: It was the custom during IPv6 design to use "3"
for unknown or example values and 3333 Coyote Hill Road, Palo
Alto, California, is the address of PARC (Palo Alto Research
Center, formerly "Xerox PARC"). Ethernet was originally specified
by the Digital Equipment Corporation, Intel Corporation, and Xerox
Corporation. The pre-IEEE [802.3] Ethernet protocol has sometimes
been known as "DIX" Ethernet from the first letters of the names
of these companies.)
2.3.2 The 'CF Series'
The Informational [RFC2153] declared the 3-octet values from CF-00-00
through CF-FF-FF to be OUIs available for assignment by IANA to
software vendors for use in PPP [RFC1661] or for other uses where
vendors do not otherwise need an IEEE-assigned OUI. It should be
noted that, when used as 48-bit MAC prefixes, these values have all
of the Z, Y, X (Local), and M (Group) special bits at the bottom of
the first byte equal to one, while all IEEE-assigned OUIs thus far
have the X and M bits zero. Multicast MAC addresses constructed with
a "CF" series OUI would fall into the standard assigned SLAP quadrant
(see Section 2.1.1). The Group bit is meaningless in PPP. To quote
[RFC2153]: "The 'CF0000' series was arbitrarily chosen to match the
PPP NLPID 'CF', as a matter of mnemonic convenience." (For further
information on NLPIDs, see [RFC6328].)
CF-00-00 is reserved, and IANA lists multicast identifier
CF-00-00-00-00-00 as used for Ethernet loopback tests.
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In over a decade of availability, only a handful of values in the CF
Series have been assigned. (See "Ethernet Numbers"
<http://www.iana.org/assignments/ethernet-numbers> and "PPP Numbers"
<http://www.iana.org/assignments/ppp-numbers>).
2.3.2.1 Changes to RFC 2153
The IANA Considerations in [RFC2153] were updated as follows by the
approval of RFC 5342 (no technical changes have been made):
o Use of these identifiers based on IANA assignment was
deprecated.
o IANA was instructed not to assign any further values in the 'CF
Series'.
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3. Ethernet Protocol Parameters
Ethernet protocol parameters provide a means of indicating the
contents of a frame -- for example, that its contents are IPv4 or
IPv6.
The concept has been extended to labeling by "tags". A tag in this
sense is a prefix whose type is identified by an Ethertype that is
then followed by either another tag, an Ethertype, or an LSAP (Link-
Layer Service Access Point) protocol indicator for the "main" body of
the frame, as described below. Traditionally, in the [802_O&A]
world, tags are a fixed length and do not include any encoding of
their own length. Any device that is processing a frame cannot, in
general, safely process anything in the frame past an Ethertype it
does not understand. An example is the C-Tag (formerly the Q-Tag)
[802.1Q]. It provides customer VLAN and priority information for a
frame.
There are two types of protocol identifier parameters that can occur
in Ethernet frames after the initial MAC-48 destination and source
identifiers:
Ethertypes: These are 16-bit identifiers appearing as the initial
two octets after the MAC destination and source (or after a
tag), which, when considered as an unsigned integer, are equal
to or larger than 0x0600.
LSAPs: These are 8-bit protocol identifiers that occur in pairs
immediately after an initial 16-bit (two-octet) remaining frame
length, which is in turn after the MAC destination and source
(or after a tag). Such a length must, when considered as an
unsigned integer, be less than 0x5DC, or it could be mistaken
as an Ethertype. LSAPs occur in pairs where one is intended to
indicate the source protocol handler and one the destination
protocol handler; however, use cases where the two are
different have been relatively rare.
Neither Ethertypes nor LSAPs are assigned by IANA; they are assigned
by the IEEE Registration Authority (see Section 1.3 above and
Appendix B). However, both LSAPs and Ethertypes have extension
mechanisms so that they can be used with five-octet Ethernet protocol
identifiers under an OUI, including those assigned by IANA under the
IANA OUI.
When using the IEEE 802 Logical Link Control (LLC) format (Subnetwork
Access Protocol (SNAP)) [802_O&A] for a frame, an OUI-based protocol
identifier can be expressed as follows:
xx-xx-AA-AA-03-yy-yy-yy-zz-zz
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where xx-xx is the frame length and, as above, must be small enough
not to be confused with an Ethertype; "AA" is the LSAP that indicates
this use and is sometimes referred to as the SNAP Service Access
Point (SAP); "03" is the LLC control octet indicating datagram
service; yy-yy-yy is an OUI; and zz-zz is a protocol number, under
that OUI, assigned by the OUI owner. The five-octet length for such
OUI-based protocol identifiers was chosen so that, with the LLC
control octet ("03"), the result is 16-bit aligned.
When using an Ethertype to indicate the main type for a frame body,
the special "OUI Extended Ethertype" 88-B7 is available. Using this
Ethertype, a frame body can begin with
88-B7-yy-yy-yy-zz-zz
where yy-yy-yy and zz-zz have the same meaning as in the SNAP format
described above.
It is also possible, within the SNAP format, to use an arbitrary
Ethertype. Putting the Ethertype as the zz-zz field after an all-
zeros OUI (00-00-00) does this. It looks like
xx-xx-AA-AA-03-00-00-00-zz-zz
where zz-zz is the Ethertype.
(Note that, at this point, the 802 protocol syntax facilities are
sufficiently powerful that they could be chained indefinitely.
Whether support for such chaining is generally required is not
clear, but [802_O&A] requires support for
xx-xx-AA-AA-03-00-00-00-88-B7-yy-yy-yy-zz-zz
although this could be more efficiently expressed by simply
pinching out the "00-00-00-88-B7" in the middle.)
As well as labeling frame contents, 802 protocol types appear within
NBMA (Non-Broadcast Multi-Access) Next Hop Resolution Protocol
[RFC2332] messages. Such messages have provisions for both two-octet
Ethertypes and OUI-based protocol types. 16-bit Ethertypes also occur
in the Generic Router Encapsulation (GRE [RFC2784]) header.
3.1 Ethernet Protocol Assignment under the IANA OUI
Two-octet protocol numbers under the IANA OUI are available, as in
xx-xx-AA-AA-03-00-00-5E-qq-qq
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where qq-qq is the protocol number.
A number of such assignments have been made out of the 2**16 protocol
numbers available from 00-00-5E-00-00 to 00-00-5E-FF-FF (see [IANA]).
The extreme values of this range, 00-00-5E-00-00 and 00-00-5E-FF-FF,
are reserved and require IESG Ratification for assignment (see
Section 5.1). New assignments of SNAP SAP protocol (qq-qq) numbers
under the IANA OUI must meet the following requirements:
o the assignment must be for standards use (either for an IETF
Standard or other standard related to IETF work),
o it must be documented in an Internet-Draft or RFC, and
o such protocol numbers are not to be assigned for any protocol
that has an Ethertype (because that can be expressed by putting
an all-zeros "OUI" before the Ethertype as described above).
In addition, the Expert Review (or IESG Ratification for the two
reserved values) must be obtained using the procedure specified in
Section 5.1.
3.2 Documentation Protocol Number
0x0042 is a protocol number under the IANA OUI (that is,
00-00-5E-00-42) to be used as an example for documentation purposes.
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4. Other OUI-Based Parameters
Some IEEE 802 and other protocols provide for parameters based on an
OUI beyond those discussed above. Such parameters most commonly
consist of an OUI plus one octet of additional value. They are
usually called "vendor specific" parameters, although "organization
specific" might be more accurate. They would look like
yy-yy-yy-zz
where yy-yy-yy is the OUI and zz is the additional specifier. An
example is the Cipher Suite Selector in IEEE [802.11].
Values may be assigned under the IANA OUI for such other OUI-based
parameter usage by Expert Review except that, for each use, the
additional specifier values consisting of all zero bits and all one
bits (0x00 (00-00-5E-00) and 0xFF (00-00-5E-FF) for a one-octet
specifier) are reserved and require IESG Ratification (see Section
5.1) for assignment; also, the additional specifier value 0x42
(00-00-5E-42) is assigned for use as an example in documentation.
Assignments of such other IANA OUI-based parameters must be for
standards use (either for an IETF Standard or other standard related
to IETF work) and be documented in an Internet-Draft or RFC. The
first time a value is assigned for a particular parameter of this
type, an IANA registry will be created to contain that assignment and
any subsequent assignments of values for that parameter under the
IANA OUI. The Expert will specify the name of the registry.
If different policies from those above are required for such a
parameter, a BCP or Standards Track RFC must be adopted to update
this BCP and specify the new policy and parameter.
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5. IANA Considerations
This document concerns IANA considerations for the assignment of
Ethernet parameters in connection with the IANA OUI and related
matters.
As this document replaces [RFC7042], references to [RFC7042] in IANA
registries will be replaced by references to this document.
This document does not create any new IANA registries.
The MAC address values assigned for documentation and the protocol
number for documentation were both assigned by [RFC7042].
No existing assignment is changed by this document.
5.1 Expert Review and IESG Ratification
This section specifies the procedure for Expert Review and IESG
Ratification of MAC, protocol, and other IANA OUI-based identifiers.
The Expert(s) referred to in this document shall consist of one or
more persons appointed by and serving at the pleasure of the IESG.
The procedure described for Expert Review assignments in this
document is fully consistent with the IANA Expert Review policy
described in [RFC8126].
While finite, the universe of code points from which Expert-judged
assignments will be made is felt to be large enough that the
requirements given in this document and the Experts' good judgment
are sufficient guidance. The idea is for the Expert to provide a
light sanity check for small assignments of EUI identifiers, with
increased scrutiny by the Expert for medium-sized assignments of EUI
identifiers and assignments of protocol identifiers and other IANA
OUI-based parameters. However, it can make sense to assign very
large portions of the MAC identifier code point space. (Note that
existing assignments include one for 1/2 of the entire multicast IANA
EUI-48 code point space and one for 1/16 of that multicast code point
space.) In those cases, and in cases of the assignment of "reserved"
values, IESG Ratification of an Expert Review approval recommendation
is required as described below. The procedure is as follows:
The applicant always completes the appropriate template from
Appendix A below and sends it to IANA <iana@iana.org>.
IANA always sends the template to an appointed Expert. If the
Expert recuses themselves or is non-responsive, IANA may choose
an alternative appointed Expert or, if none is available, will
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contact the IESG.
In all cases, if IANA receives a disapproval from an Expert
selected to review an application template, the application
will be denied. The Expert should provide a reason for refusal
which IANA will communicate back to the applicant.
If the assignment is based on Expert Review:
If IANA receives approval and code points are available,
IANA will make the requested assignment.
If the assignment is based on IESG Ratification:
The procedure starts with the first steps above for Expert
Review. If the Expert disapproves the application, they
simply inform IANA; however, if the Expert believes the
application should be approved, or is uncertain and believes
that the circumstances warrant the attention of the IESG,
the Expert will inform IANA about their advice, and IANA
will forward the application, together with the reasons
provided by the Expert for approval or uncertainty, to the
IESG. The IESG must decide whether the assignment will be
granted. This can be accomplished by a management item in
an IESG telechat as is done for other types of requests. If
the IESG decides not to ratify a favorable opinion by the
Expert or decides against an application where the Expert is
uncertain, the application is denied; otherwise, it is
granted. The IESG will communicate its decision to the
Expert and to IANA. In case of refusal, the IESG should
provide a reason which IANA will communicate to the
applicant.
5.2 MAC Address AFNs and RRTYPEs
IANA has assigned Address Family Numbers (AFNs) for MAC addresses as
follows:
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AFN Decimal Hex Reference
---------- ------- ------ ---------
48-bit MAC 16389 0x4005 [RFC7042]
64-bit MAC 16390 0x4006 [RFC7042]
24-bit OUI 16391 0x4007 [RFC7961]
MAC/24 16392 0x4008 [RFC7961]
Lower 24 bits of a 48-bit MAC address
MAC/40 16393 0x4009 [RFC7961]
Lower 40 bits of a 64-bit MAC address
IANA has assigned DNS RRTYPEs [RFC6895] for MAC addresses as follows:
RRTYPE Code
Data Mnemonic Decimal Hex Reference
---------- -------- ------- ------ -----------
48-bit MAC EUI48 108 0x006C [RFC7043]
64-bit MAC EUI64 109 0x006D [RFC7043]
5.3 Informational IANA Web Page Material
IANA maintains an informational listing on its web site concerning
Ethertypes, OUIs, and multicast addresses assigned under OUIs other
than the IANA OUI. The title of this informational registry is "IEEE
802 Numbers". IANA has merged in those Ethertypes listed in Appendix
B that were not already included. IANA will update that
informational registry when changes are provided or approved by the
Expert(s).
5.4 OUI Exhaustion
When the available space for either multicast or unicast EUI-48
identifiers under OUI 00-00-5E has been 90% or more exhausted, IANA
should request an additional OUI from the IEEE Registration Authority
for further IANA assignment. The appointed Expert(s) should monitor
for this condition and notify IANA.
5.5 IANA OUI MAC Address Table
No changes have been made in the "IANA Unicast 48-bit MAC Addresses"
and "IANA Multicast 48-bit MAC Addresses" tables except for the
updates to references as specified in the first part of Section 5.
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5.6 SNAP Protocol Number Table and Assignment
The IANA table formerly called the "SNAP PROTOCOL IDs" table has been
renamed "SNAP Protocol Numbers". "PID" has been replaced by
"Protocol Number".
IANA has assigned 0x0042 as the SNAP protocol number under the IANA
OUI to be used for documentation purposes.
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6. Security Considerations
This document is concerned with assignment of parameters under the
IANA OUI and closely related matters. It is not directly concerned
with security except as follows:
Confusion and conflict can be caused by the use of MAC addresses
or other OUI-derived protocol parameters as examples in
documentation. Examples that are "only" to be used in
documentation can end up being coded and released or cause
conflicts due to later real use and the possible acquisition of
intellectual property rights in such addresses or parameters. The
reservation herein of MAC addresses and parameters for
documentation purposes will minimize such confusion and conflict.
See [RFC7043] for security considerations in storing MAC addresses in
the DNS.
7. Acknowledgements
The comments and suggestions of the following people, listed in
alphabetic order, are gratefully acknowledged:
This Document:
TBD
RFC 7042 (which was obsoleted by this document):
David Black, Adrian Farrel, Bob Grow, Joel Jaeggli, Pearl
Liang, Glenn Parsons, Pete Resnick, and Dan Romascanu.
D. Eastlake & J. Abley [Page 25]
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Normative References
[802_O&A] - "IEEE Standard for Local and Metropolitan Area Networks:
Overview and Architecture", IEEE Std 802-2014, 12 June 2014.
"Standard for Local and Metropolitan Area Networks: Overview
and Architecture - Draft Amendment: Local Medium Access Control
(MAC) Address Usage", IEEE 802c, Draft 2.2, April 2017.
[RFC8126] - Cotton, M., Leiba, B., and T. Narten, "Guidelines for
Writing an IANA Considerations Section in RFCs", BCP 26, RFC
8126, DOI 10.17487/RFC8126, June 2017, <https://www.rfc-
editor.org/info/rfc8126>.
Informative References
[802.1CQ] - IEEE 802, "Standard for Local and Metropolitan Area
Networks: Multicast and Local Address Assignment", work in
progress.
[802.1Q] - "IEEE Standard for Local and metropolitan area networks /
Media Access Control (MAC) Bridges and Virtual Bridge Local
Area Networks", IEEE Std 802.1Q-2011, 31 August 2011.
[802.3] - "IEEE Standard for Ethernet", IEEE Std 802.3-2012, 28
December 2012.
[802.11] - "IEEE Standard for Information technology /
Telecommunications and information exchange between systems /
Local and metropolitan area networks / Specific requirements /
Part 11: Wireless LAN Medium Access Control (MAC) and Physical
Layer (PHY) Specifications", IEEE Std 802.11-2012, 29 March
2012.
[EUI-64] - IEEE Registration Authority, "Guidelines for 64-bit Global
Identifier (EUI-64(TM))", <http://standards.ieee.org/
regauth/oui/tutorials/EUI64.html>, November 2012.
[IANA] - Internet Assigned Numbers Authority, <http://www.iana.org>.
[IEEE802] - IEEE 802 LAN/MAN Standards Committee,
<http://www.ieee802.org>.
D. Eastlake & J. Abley [Page 26]
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[IEEEtutorial] - IEEE, "Guidelines for Use of Extended Unique
Identifier (EUI), Organizationally Unique Identifier (OUI), and
Company ID (CID)",
<https://standards.ieee.org/content/dam/ieee-
standards/standards/web/documents/tutorials/eui.pdf>, 3 August
2017.
[InfiniBand] - InfiniBand Trade Association, "InfiniBand Architecture
Specification Volume 1", November 2007.
[RAC_OUI] - Parsons, G., "OUI Registry Restructuring",
draft-ieee-rac-oui-restructuring-01.txt, work in Progress,
September 2013.
[RFC1112] - Deering, S., "Host extensions for IP multicasting", STD
5, RFC 1112, August 1989.
[RFC1661] - Simpson, W., Ed., "The Point-to-Point Protocol (PPP)",
STD 51, RFC 1661, July 1994.
[RFC2153] - Simpson, W., "PPP Vendor Extensions", RFC 2153, May 1997.
[RFC2332] - Luciani, J., Katz, D., Piscitello, D., Cole, B., and N.
Doraswamy, "NBMA Next Hop Resolution Protocol (NHRP)", RFC
2332, April 1998.
[RFC2464] - Crawford, M., "Transmission of IPv6 Packets over Ethernet
Networks", RFC 2464, December 1998.
[RFC2606] - Eastlake 3rd, D. and A. Panitz, "Reserved Top Level DNS
Names", BCP 32, RFC 2606, June 1999.
[RFC2784] - Farinacci, D., Li, T., Hanks, S., Meyer, D., and P.
Traina, "Generic Routing Encapsulation (GRE)", RFC 2784, DOI
10.17487/RFC2784, March 2000, <https://www.rfc-
editor.org/info/rfc2784>.
[RFC3092] - Eastlake 3rd, D., Manros, C., and E. Raymond, "Etymology
of "Foo"", RFC 3092, April 1 2001.
[RFC4291] - Hinden, R. and S. Deering, "IP Version 6 Addressing
Architecture", RFC 4291, February 2006.
[RFC4760] - Bates, T., Chandra, R., Katz, D., and Y. Rekhter,
"Multiprotocol Extensions for BGP-4", RFC 4760, January 2007.
[RFC5214] - Templin, F., Gleeson, T., and D. Thaler, "Intra-Site
Automatic Tunnel Addressing Protocol (ISATAP)", RFC 5214, March
2008.
D. Eastlake & J. Abley [Page 27]
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[RFC5332] - Eckert, T., Rosen, E., Ed., Aggarwal, R., and Y. Rekhter,
"MPLS Multicast Encapsulations", RFC 5332, August 2008.
[RFC5737] - Arkko, J., Cotton, M., and L. Vegoda, "IPv4 Address
Blocks Reserved for Documentation", RFC 5737, January 2010.
[RFC5798] - Nadas, S., Ed., "Virtual Router Redundancy Protocol
(VRRP) Version 3 for IPv4 and IPv6", RFC 5798, March 2010.
[RFC6034] - Thaler, D., "Unicast-Prefix-Based IPv4 Multicast
Addresses", RFC 6034, October 2010.
[RFC6328] - Eastlake 3rd, D., "IANA Considerations for Network Layer
Protocol Identifiers", BCP 164, RFC 6328, DOI 10.17487/RFC6328,
July 2011, <https://www.rfc-editor.org/info/rfc6328>
[RFC6895] - Eastlake 3rd, D., "Domain Name System (DNS) IANA
Considerations", BCP 42, RFC 6895, April 2013.
[RFC7042] - Eastlake 3rd, D. and J. Abley, "IANA Considerations and
IETF Protocol and Documentation Usage for IEEE 802 Parameters",
BCP 141, RFC 7042, DOI 10.17487/RFC7042, October 2013,
<http://www.rfc-editor.org/info/rfc7042>.
[RFC7043] - Abley, J., "Resource Records for EUI-48 and EUI-64
Addresses in the DNS", RFC 7043, October 2013.
[RFC7319] - Eastlake 3rd, D., "IANA Considerations for Connectivity
Fault Management (CFM) Code Points", BCP 191, RFC 7319, DOI
10.17487/RFC7319, July 2014, <https://www.rfc-
editor.org/info/rfc7319>.
[RFC7961] - Eastlake 3rd, D. and L. Yizhou, "Transparent
Interconnection of Lots of Links (TRILL): Interface Addresses
APPsub-TLV", RFC 7961, DOI 10.17487/RFC7961, August 2016,
<https://www.rfc-editor.org/info/rfc7961>.
[RFC8947] - Volz, B., Mrugalski, T., and C. Bernardos, "Link-Layer
Address Assignment Mechanism for DHCPv6", RFC 8947, DOI
10.17487/RFC8947, December 2020, <https://www.rfc-
editor.org/info/rfc8947>.
[RFC8948] - Bernardos, CJ. and A. Mourad, "Structured Local Address
Plan (SLAP) Quadrant Selection Option for DHCPv6", RFC 8948,
DOI 10.17487/RFC8948, December 2020, <https://www.rfc-
editor.org/info/rfc8948>.
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Appendix A. Templates
This appendix provides the specific templates for IANA assignments of
parameters. Explanatory words in parentheses in the templates below
may be deleted in a completed template as submitted to IANA.
A.1 EUI-48/EUI-64 Identifier or Identifier Block Template
Applicant Name:
Applicant Email:
Applicant Telephone: (starting with country code)
Use Name: (brief name of Parameter use such as "Foo Protocol"
[RFC3092])
Document: (ID or RFC specifying use to which the identifier or block
of identifiers will be put.)
Specify whether this is an application for EUI-48 or EUI-64
identifiers:
Size of Block requested: (must be a power-of-two-sized block, can be
a block of size one (2**0))
Specify multicast, unicast, or both:
A.2 IANA OUI-Based Protocol Number Template
Applicant Name:
Applicant Email:
Applicant Telephone: (starting with country code)
Use Name: (brief name of use of code point such as "Foo Protocol")
Document: (ID or RFC specifying use to which the protocol identifier
will be put.)
Note: (any additional note)
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A.3 Other IANA OUI-Based Parameter Template
Applicant Name:
Applicant Email:
Applicant Telephone: (starting with country code)
Protocol where the OUI-Based Parameter for which a value is being
requested appears: (such as: Cipher Suite selection in IEEE 802.11)
Use Name: (brief name of use of code point to be assigned, such as
"Foo Cipher Suite" [RFC3092])
Document: (ID or RFC specifying use to which the other IANA OUI-based
parameter value will be put.)
Note: (any additional note)
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Appendix B. Ethertypes
This appendix lists some Ethertypes specified for IETF protocols or
by IEEE 802 as known at the time of publication. A more up-to-date
list may be available on the IANA web site, currently at [IANA]. The
IEEE Registration Authority page of Ethertypes,
http://standards.ieee.org/regauth/ethertype/eth.txt, may also be
useful. See Section 3 above.
B.1. Some Ethertypes Specified by the IETF
0x0800 Internet Protocol Version 4 (IPv4)
0x0806 Address Resolution Protocol (ARP)
0x0808 Frame Relay ARP
0x22F3 TRILL
0x22F4 L2-IS-IS
0x8035 Reverse Address Resolution Protocol (RARP)
0x86DD Internet Protocol Version 6 (IPv6)
0x876B TCP/IP Compression
0x876C IP Autonomous System
0x880B Point-to-Point Protocol (PPP)
0x880C General Switch Management Protocol (GSMP)
0x8847 MPLS
0x8848 MPLS with upstream-assigned label
0x8861 Multicast Channel Allocation Protocol (MCAP)
0x8863 PPP over Ethernet (PPPoE) Discovery Stage
0x8864 PPP over Ethernet (PPPoE) Session Stage
0x893B TRILL Fine Grained Labeling (FGL)
0x8946 TRILL RBridge Channel
0x894F NSH (Network Service Header)
0x9A22 TRILL Multi Topology
0xA0ED LoWPAN Encapsulation
0xB7EA Control message channel inside GRE
B.2. Some IEEE 802 Ethertypes
0x8100 IEEE Std 802.1Q - Customer VLAN Tag Type (C-Tag, formerly
called the Q-Tag) (initially Wellfleet)
0x8808 IEEE Std 802.3 - Ethernet Passive Optical Network (EPON)
0x888E IEEE Std 802.1X - 802.1X Port-based network access control
0x88A8 IEEE Std 802.1Q - Service VLAN tag identifier (S-Tag)
0x88B5 IEEE Std 802 - Local Experimental Ethertype
0x88B6 IEEE Std 802 - Local Experimental Ethertype
0x88B7 IEEE Std 802 - OUI Extended Ethertype
0x88C7 IEEE Std 802.11 - Pre-Authentication (802.11i)
0x88CC IEEE Std 802.1AB - Link Layer Discovery Protocol (LLDP)
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0x88E5 IEEE Std 802.1AE - Media Access Control Security
0x88F5 IEEE Std 802.1Q - Multiple VLAN Registration Protocol
(MVRP)
0x88F6 IEEE Std 802.1Q - Multiple Multicast Registration
Protocol (MMRP)
0x890D IEEE Std 802.11 - Used for a variety of 802.11 Protocols:
Fast Roaming Remote Request/Response
Tunnelled Direct Link Setup
Registered Location Query
Fast Session Transfer
0x8917 IEEE Std 802.21 - Media Independent Handover Protocol
0x8929 IEEE Std 802.1Qbe - Multiple I-SID Registration Protocol
0x8940 IEEE Std 802.1Qbg - ECP Protocol (also used in 802.1BR)
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Authors' Addresses
Donald E. Eastlake 3rd
Futurewei Technologies
2386 Panoramic Circle
Apopka, FL 32703
USA
Phone: +1-508-634-2066
EMail: d3e3e3@gmail.com
Joe Abley
Hopcount Limited
186 Albert Stree, Suite 103
London, ON N6A 1M1
Canada
Phone: +1 519 670 9327
EMail: jabley@hopcount.ca
D. Eastlake & J. Abley [Page 33]
INTERNET-DRAFT IANA/IETF and IEEE 802 Parameters
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D. Eastlake & J. Abley [Page 34]