pppext O. Vautrin, Ed. Internet-Draft Juniper Networks Intended status: Standards Track B. Lourdelet Expires: April 6, 2011 Cisco Systems, Inc E. Srinivasan Juniper Networks October 03, 2010 Multi link PPP Support for an ipv6 address class identifier draft-vautrin-pppext-ipv6-mlppp-id-00 Abstract This document specifies a new multi link protocol address class identifier. This new class will be able to contain an ipv6 address. Status of this Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. 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." This Internet-Draft will expire on April 6, 2011. Copyright Notice Copyright (c) 2010 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Vautrin, et al. Expires April 6, 2011 [Page 1] Internet-Draft IPv6 MLPPP ID October 2010 This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Requirements Language . . . . . . . . . . . . . . . . . . . . . 3 3. New IPv6 Endpoint Discriminator address class . . . . . . . . . 3 4. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 4 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5 6. Security Considerations . . . . . . . . . . . . . . . . . . . . 5 7. Normative References . . . . . . . . . . . . . . . . . . . . . 5 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 5 Vautrin, et al. Expires April 6, 2011 [Page 2] Internet-Draft IPv6 MLPPP ID October 2010 1. Introduction RFC 1990 [RFC1990] defines 6 different classes in its Endpoint Discriminator Option (from Class 0 to class 5). If a Multilink PPP is created in an ipv6 environment it would be possible to use the Class 1 address space and place the IPv6 address there as the MLPPP session ID. But the Class 1 has been deprecated and is thus not the right vehicle for an ipv6 address. The class 1 is also 20 bytes (compare to 16 bytes for IPv6) so would not be suitable without a clarification of the mapping process. This document propose the creation of a class 6 dedicated to ipv6 addresses. A Endpoint discriminator based on an Ipv6 address could be useful in an Ipv6 only deployment or in a dual stack deployment (Ipv4 and IPv6) when the Ipv4 address is not a unique identifier. 2. Requirements Language 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 RFC 2119 [RFC2119]. 3. New IPv6 Endpoint Discriminator address class Per RFC 1990 [RFC1990], the Endpoint Discriminator Option is defined as such: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type = 19 | Length | Class | Address ... +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 1 Vautrin, et al. Expires April 6, 2011 [Page 3] Internet-Draft IPv6 MLPPP ID October 2010 The Endpoint Discriminator Option represents identification of the system transmitting the packet. The specification of the subfields are: Type 19 = for Endpoint Discriminator Length 3 + length of Address Class The Class field is one octet and indicates the identifier address space. Current values are assigned as follows: 0 Null Class 1 Locally Assigned Address 2 Internet Protocol (IPv4) Address 3 IEEE 802.1 Globally Assigned MAC Address 4 PPP Magic-Number Block 5 Public Switched Network Directory Number This document defines a new class of endpoint discreminator address: 6 Internet Protocol (IPv6) Address defined as: Class 6 - Internet Protocol (IPv6) Address Fixed Length: 16 Content: An address in this class contains an IPv6 host address as defined in RFC 2460 [RFC2460]. It is recommended to use a statically-assigned global IPv6 address to form this identifier to ensure its uniqueness. 4. Acknowledgements None Vautrin, et al. Expires April 6, 2011 [Page 4] Internet-Draft IPv6 MLPPP ID October 2010 5. IANA Considerations None 6. Security Considerations To be defined. 7. Normative References [RFC1990] Sklower, K., Lloyd, B., McGregor, G., Carr, D., and T. Coradetti, "The PPP Multilink Protocol (MP)", RFC 1990, August 1996. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2460] Deering, S. and R. Hinden, "Internet Protocol, Version 6 (IPv6) Specification", RFC 2460, December 1998. Authors' Addresses Olivier Vautrin (editor) Juniper Networks 1194 N Mathilda Avenue Sunnyvale, CA 94089 USA Email: Olivier@juniper.net Benoit Lourdelet Cisco Systems, Inc Village ent. GreenSide, Bat T3, 400, Av de Roumanille, 06410 BIOT - Sophia-Antipolis Cedex France Phone: Email: blourdel@cisco.com Vautrin, et al. Expires April 6, 2011 [Page 5] Internet-Draft IPv6 MLPPP ID October 2010 Eswaran Srinivasan Juniper Networks 1194 N. Mathilda Ave, Sunnyvale, CA 94404 USA Phone: Email: esriniva@juniper.net Vautrin, et al. Expires April 6, 2011 [Page 6]