Network Working Group P. Arberg
Request for Comments: 4937 Redback Networks
Category: Informational V. Mammoliti
Cisco Systems
June 2007
IANA Considerations for PPP over Ethernet (PPPoE)
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The IETF Trust (2007).
Abstract
This document describes the IANA considerations for the PPP over
Ethernet (PPPoE) protocol.
Table of Contents
1. Introduction ....................................................2
1.1. Terminology ................................................2
1.2. Specification of Requirements ..............................2
2. IANA Considerations .............................................2
2.1. Registration Policies for PPPoE TAG Values .................2
2.2. Reserved PPPoE TAG Values ..................................3
2.3. Registration Policies for PPPoE Code Fields ................3
2.4. Reserved PPPoE Code fields .................................4
3. Security Considerations .........................................4
4. References ......................................................4
4.1. Normative References .......................................4
4.2. Informative References .....................................4
Arberg & Mammoliti Informational [Page 1]
RFC 4937 IANA Considerations for PPPoE June 2007
1. Introduction
This document provides guidance to the Internet Assigned Numbers
Authority (IANA) regarding the registration of values related to the
PPP over Ethernet Protocol (PPPoE), defined in [RFC2516], in
accordance with BCP 26, [RFC2434]. It also reserves PPPoE TAG values
as well as PPPoE packet Code fields, which are or have been in use on
the Internet.
1.1. Terminology
The following terms are used here with the meanings defined in BCP
26: "name space", "registration".
The following policies are used here with the meanings defined in BCP
26: "First Come First Served".
1.2. Specification of Requirements
In this document, several words are used to signify the requirements
of the specification. These words are often capitalized. The key
words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD",
"SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document
are to be interpreted as described in [RFC2119].
2. IANA Considerations
The PPPoE protocol, as defined in [RFC2516], defines two name spaces
that require registration, the PPPoE TAG and the PPPoE Code field.
2.1. Registration Policies for PPPoE TAG Values
IANA has set up a registry of "PPPoE TAG Values". These are 16-bit
values. PPPoE TAG values already in use are specified as reserved in
this document. All other TAG values between 0 and 65535 are to be
assigned by IANA, using the "First Come First Served" policy defined
in [RFC2434].
A TAG-Name and a description for the usage, as well as a point of
contact, MUST be provided for any assignment from this registry. A
document reference SHOULD also be provided.
Arberg & Mammoliti Informational [Page 2]
RFC 4937 IANA Considerations for PPPoE June 2007
2.2. Reserved PPPoE TAG Values
TAG Value TAG Name Tag Description Reference
----------- ------------------- --------------------- ---------
0 0x0000 End-Of-List See the reference [RFC2516]
257 0x0101 Service-Name See the reference [RFC2516]
258 0x0102 AC-Name See the reference [RFC2516]
259 0x0103 Host-Uniq See the reference [RFC2516]
260 0x0104 AC-Cookie See the reference [RFC2516]
261 0x0105 Vendor-Specific See the reference [RFC2516]
262 0x0106 Credits See the reference [RFC4938]
263 0x0107 Metrics See the reference [RFC4938]
264 0x0108 Sequence Number See the reference [RFC4938]
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