IANA Considerations for PPP over Ethernet (PPPoE)
draft-arberg-pppoe-iana-03

Internet Draft                                              Peter Arberg
                                                        Redback Networks
Intended status: Best Current Practice 
Expiration Date: April 2007                              Vince Mammoliti
                                                           Cisco Systems

                                                            October 2006

           IANA Considerations for PPP over Ethernet (PPPoE)

                    draft-arberg-pppoe-iana-03.txt

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Copyright Notice

  Copyright (C) The Internet Society (2006).

Abstract

  This document describes the IANA considerations for the PPP over 
  Ethernet (PPPoE) protocol.

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Table of Contents

  1. Introduction...............................................   2
   1.1 Terminology..............................................   2
   1.2 Specification of Requirements............................   2
  2. IANA Considerations........................................   3
   2.1 Registration Policies for PPPoE TAG Values...............   3
   2.2 Reserved PPPoE TAG Values................................   3
   2.3 Registration Policies for PPPoE Code fields..............   4
   2.4 Reserved PPPoE Code fields...............................   4
  3. Security Considerations....................................   4
  4. References.................................................   5
   4.1 Normative References.....................................   5
   4.2 Informative References...................................   5
     Author's Address...........................................   5
     Full Copyright Statement...................................   6
     Intellectual Property Statement............................   6

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].

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2. IANA Considerations

  The PPPoE protocol as defined in [RFC2516] defines two name spaces 
  that requires registration, the PPPoE TAG and the PPPoE Code field.

2.1 Registration Policies for PPPoE TAG Values

  IANA shall 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.

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        [BERRY]
  263  0x0107   Metrics               See the reference        [BERRY]
  264  0x0108   Sequence Number       See the reference        [BERRY]

  272  0x0110   Relay-Session-Id      See the reference        [RFC2516]
  273  0x0111   HURL                  See the reference        [CARREL]
  274  0x0112   MOTM                  See the reference        [CARREL]

  288  0x0120   PPP-Max-Payload       See the reference        [ARBERG]
  289  0x0121   IP_Route_Add          See the reference        [CARREL]

  513  0x0201   Service-Name-Error    See the reference        [RFC2516]
  514  0x0202   AC-System-Error       See the reference        [RFC2516]
  515  0x0203   Generic-Error         See the reference        [RFC2516]

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2.3 Registration Policies for PPPoE Code fields

  IANA shall set up a registry of PPPoE Active Discovery Code 
  fields. These are 8-bit values. PPPoE Code fields already in use 
  are specified as reserved in this document, all other Code values 
  between 0 and 255 are to be assigned by IANA, using the 
  "First Come First Served" policy defined in [RFC2434]. 

  A PPPoE Active Discovery packet 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.

2.4 Reserved PPPoE Code fields

  Code      PPPoE Packet Name               Description        Reference
  --------  ------------------------------  -----------------  ---------
  0   0x00  PPP Session Stage               See the reference  [RFC2516]

  7   0x07  PADO, Offer                     See the reference  [RFC2516]
  9   0x09  PADI, Initiation                See the reference  [RFC2516]

  10  0x0a  PADG, Session-Grant             See the reference  [BERRY]
  11  0x0b  PADC, Session-Credit Response   See the reference  [BERRY]
  12  0x0c  PADQ, Quality                   See the reference  [BERRY]

  25  0x19  PADR, Request                   See the reference  [RFC2516]
  101 0x65  PADS, Session-confirmation      See the reference  [RFC2516]

  167 0xa7  PADT, Terminate                 See the reference  [RFC2516]

  211 0xd3  PADM, Message                   See the reference  [CARREL]
  212 0xd4  PADN, Network                   See the reference  [CARREL]

3. Security Considerations

  This document focuses on IANA considerations for the PPPoE protocol, 
  and as such should help remove the possibility for the same PPPoE
  code field and PPPoE TAG value being used for different 
  functionalities.

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4. References

4.1 Normative References

  [RFC2119]      Bradner, S., "Key words for use in RFCs to Indicate
                 Requirement Levels", BCP 14, RFC 2119, March 1997.

  [RFC2434]      Narten, T. and H. Alvestrand, "Guidelines for Writing
                 an IANA Considerations Section in RFCs", BCP 26, RFC
                 2434, October 1998.

  [RFC2516]      Mamakos L., Lidl K., Evarts J., Carrel D., Simone D., 
                 Wheeler R., "A Method for Transmitting PPP Over 
                 Ethernet (PPPoE)", RFC 2516, February 1999

4.2 Informative References

  [CARREL]       Carrel D., Simone D., Ho C., Stoner T., "Extensions 
                 to a Method for Transmitting PPP Over Ethernet 
                 (PPPoE)", work in progress.

  [BERRY]        Berry B., Holgate H., "PPP Over Ethernet (PPPoE) 
                 Extensions for Credit Flow and Link Metrics", 
                 work in progress.

  [ARBERG]       Arberg P., Kourkouzelis D., Duckett M., Anschutz T., 
                 Moisand J., "Accommodating an MTU/MRU greater than 
                 1492 in PPPoE", work in progress.

Authors' Addresses

  Peter Arberg 
  Redback Networks, Inc.
  300 Holger Way
  San Jose, CA 95134
  USA
  Email: parberg@redback.com

  Vince Mammoliti
  Cisco Systems, Inc.
  181 Bay Street, Suite 3400
  Toronto, Ontario, M5J 2T3
  Canada
  EMail: vince@cisco.com

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