MIP6 Working Group V. Devarapalli
Internet-Draft Azaire Networks
Intended status: Standards Track A. Patel
Expires: April 25, 2007 K. Leung
Cisco
October 22, 2006
Mobile IPv6 Vendor Specific Option
draft-devarapalli-mip6-vsm-02.txt
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Copyright (C) The Internet Society (2006).
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.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Vendor Specific Mobility Option . . . . . . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . . 4
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4
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
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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
implementations [3].
Vendor specific extensions to protocols can cause serious
interoperability issues 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
the Binding Authorization Data option. Multiple Vendor Specific
mobility options MAY be present in a Mobility Header message.
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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 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
. .
. Data .
. .
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Type
A 8-bit field indicating that it is a Vendor Specific mobility
option.
Length
A 8-bit indicating the length of the option in octets excluding
the Type and Length fields.
Vendor ID
The SMI Network Management Private Enterprise Code of the Vendor/
Organization as defined by IANA.
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.
5. IANA Considerations
The Vendor Specific mobility option defined in Section 3, should have
the type value allocated from the same space as Mobility Options [2].
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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.
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
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Kent Leung
Cisco
170 West Tasman Drive
San Jose, CA 95134
USA
Email: kleung@cisco.com
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