MIP6 Working Group V. Devarapalli Internet-Draft Azaire Networks Intended status: Standards Track A. Patel Expires: March 27, 2008 K. Leung Cisco September 24, 2007 Mobile IPv6 Vendor Specific Option draft-ietf-mip6-vsm-02.txt Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. 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/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on March 27, 2008. Copyright Notice Copyright (C) The IETF Trust (2007). Abstract There is a need for vendor specific extensions to Mobility Header messages so that Mobile IPv6 vendors are able to extend the protocol for research or deployment purposes. This document defines a new vendor specific mobility option. Devarapalli, et al. Expires March 27, 2008 [Page 1] Internet-Draft MIPv6 Vendor Specific Option September 2007 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Vendor Specific Mobility Option . . . . . . . . . . . . . . . . 3 4. Security Considerations . . . . . . . . . . . . . . . . . . . . 4 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5 6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 5 7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 5 7.1. Normative References . . . . . . . . . . . . . . . . . . . 5 7.2. Informative References . . . . . . . . . . . . . . . . . . 5 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 5 Intellectual Property and Copyright Statements . . . . . . . . . . 7 Devarapalli, et al. Expires March 27, 2008 [Page 2] Internet-Draft MIPv6 Vendor Specific Option September 2007 1. Introduction Vendor specific messages have traditionally allowed vendors to implement extensions to some protocols and distinguish themselves from other vendors. These messages are clearly marked by a Vendor ID that identifies the vendor. A particular vendor's implementation identifies the vendor extension by recognizing the Vendor ID. Implementations that do not recognize the Vendor ID either discard or skip processing the message. Mobile IPv6 [2] is being deployed and there is a need for vendor specific extensions to Mobility Header messages so that vendors are able to extend the Mobile IPv6 protocol for research or deployment purposes. This document defines a new mobility option, the Vendor Specific Mobility option, which can be carried in any Mobility Header message. The Vendor Specific mobility option MUST be used only with a Mobility Header message. Mobility options, by definition, can be skipped if an implementation does not recognize the mobility option type [2]. The messages defined in this document can also be used for NEMO [3] and Proxy MIPv6 [4] since these protocols also use Mobility Header messages. Vendor specific extensions to protocols can cause serious interoperability issues and may have adverse operational impact like overhead on hosts and routers, network overload and congestion if they are not used carefully. The vendor specific extensions MUST be standardized in the IETF if they are to be deployed in a large scale or if multiple vendors are involved in a particular system or deployment. Experience has shown that vendor specific extensions benefit from IETF review and standardization. 2. Terminology 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 [1]. 3. Vendor Specific Mobility Option The Vendor Specific Mobility Option can be included in any Mobility Header message and has an alignment requirement of 4n+2. If the Mobility Header message includes a Binding Authorization Data option [2], then the Vendor Specific mobility option should appear before Devarapalli, et al. Expires March 27, 2008 [Page 3] Internet-Draft MIPv6 Vendor Specific Option September 2007 the Binding Authorization Data option. Multiple Vendor Specific mobility options MAY be present in a Mobility Header message. 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 | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Vendor ID | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Sub-Type | Data....... +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Type A 8-bit field indicating that it is a Vendor Specific mobility option. Length A 8-bit field indicating the length of the option in octets excluding the Type and the Length fields. All other fields are included. Vendor ID The SMI Network Management Private Enterprise Code of the IANA maintained Private Enterprise Numbers registry [5]. Sub-type A 8-bit field indicating the type of vendor specific information carried in the option. The administration of the Sub-type is done by the Vendor. Data Vendor specific data that is carried in this message. 4. Security Considerations The Vendor Specific mobility messages should be protected in a manner similar to Binding Updates and Binding acknowledgements if it carries information that should not be revealed on the wire or that can affect the binding cache entry at the home agent or the correspondent node. In particular the messages containing the Vendor Specific Devarapalli, et al. Expires March 27, 2008 [Page 4] Internet-Draft MIPv6 Vendor Specific Option September 2007 mobility option MUST be integrity protected. 5. IANA Considerations The Vendor Specific mobility option defined in Section 3, should have the type value allocated from the same space as the Mobility Options registry created by RFC 3775 [2]. 6. Acknowledgements The author would like to thank Jari Arkko and Basavaraj Patil with whom the contents of this document were discussed first. 7. References 7.1. Normative References [1] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [2] Johnson, D., Perkins, C., and J. Arkko, "Mobility Support in IPv6", RFC 3775, June 2004. 7.2. Informative References [3] Devarapalli, V., Wakikawa, R., Petrescu, A., and P. Thubert, "Network Mobility (NEMO) Basic Support Protocol", RFC 3963, January 2005. [4] Gundavelli, S., "Proxy Mobile IPv6", draft-sgundave-mip6-proxymip6-02 (work in progress), March 2007. [5] IANA Assigned Numbers Online Database, "Private Enterprise Numbers", http://www.iana.org/assignments/enterprise-numbers . Devarapalli, et al. Expires March 27, 2008 [Page 5] Internet-Draft MIPv6 Vendor Specific Option September 2007 Authors' Addresses Vijay Devarapalli Azaire Networks 4800 Great America Pkwy Santa Clara, CA 95054 USA Email: vijay.devarapalli@azairenet.com Alpesh Patel Cisco 170 West Tasman Drive San Jose, CA 95134 USA Email: alpesh@cisco.com Kent Leung Cisco 170 West Tasman Drive San Jose, CA 95134 USA Email: kleung@cisco.com Devarapalli, et al. Expires March 27, 2008 [Page 6] Internet-Draft MIPv6 Vendor Specific Option September 2007 Full Copyright Statement Copyright (C) The IETF Trust (2007). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. 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