One document matched: draft-zhao-dhc-miptype-00.txt
Network Working Group Yuankui.zhao
Internet-Draft Shanghai Huawei Technology
Intended status: Standards Track Feb 25, 20067
Expires: Sep 5, 2007
DHCP option for MIP type Decision
draft-zhao-dhc-miptype-00
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Copyright (C) The Internet Society (2007).
Yuankui zhao Sep 5, 2007 [Page 1]
Internet-Draft DHCP for Mip type February 2006
Abstract
Dynamic Host Configuration Protocol is used as the trigger of network
to distinguish if a MS need the proxy mip capability.But a MS maybe
has the MIP capability.We need a flag to know if a MS need or require
Proxy MIP capability.This document explains we can define a flag in
dhcp option to state that a MS wish or doesn't wish to have the Proxy
MIP capability.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. The Flag Suboption . . . . . . . . . . . . . . . . . . . . . . 5
4. DHCP function entity consideration . . . . . . . . . . . . . . 6
5. Security Considerations . . . . . . . . . . . . . . . . . . . 7
6. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . 8
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 9
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8.1. Normative References . . . . . . . . . . . . . . . . . . . 10
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 11
Intellectual Property and Copyright Statements . . . . . . . . . . 12
Yuankui zhao Sep 5, 2007 [Page 2]
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1. Introduction
Currently in some standards development organizations(SDO) some
simple IP terminal need to be implemented the MIP cability. That is
finished by network without the MS's mobility support. That is named
as PMIP(proxy MIP). But if all of the simple IP terminated will be
provided with the PMIP by PMIP-enabled network? Or if MIP-enabled
terminal can also have the PMIP support by PMIP-enabled network?
These requirements are needed to be defined.
This document defines a flag in dhcp option to indicate that a MS wish
or doesn't wish to have the Proxy MIP capability.
1.1. 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 BCP 14 RFC 2119
[STANDARDS].
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2. Overview
In DHCP protocol, we definedd a new option to indicate that if a MS
need the proxy MIP capability.
This flag should be used in both of stateless DHCP protocol or
stateful DHCP protocol.
This flag should be used in both of DHCPv4 and DHCPv6 protocols.
Yuankui zhao Sep 5, 2007 [Page 4]
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3. The Flag Suboption
This section describes the defination of the mip type flag in DHCP option.
The format of the suboption is:
0 1 2
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Code | Length | Flags |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Code The suboption code. (TBD, to be assigned by IANA).
Length The suboption length, 1 octet.
Flags To indicate the mip type of the DHCP request sender
0 1 2 3 4 5 6 7
+-+-+-+-+-+-+-+-+
|s|P|M|reserved |
+-+-+-+-+-+-+-+-+
S: 0: Non-simple ip terminal
1: A simple ip terminal
p: 0: No need the proxy MIP capability support
1: Need the proxy MIP capability support
M: 0: A terminal Without the mobile ip capability
1: mobile ip terminal
Yuankui zhao Sep 5, 2007 [Page 5]
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4. DHCP function entity consideration
The DHCP Relay forward DHCP request messages with this option without
any modification on this option.
After received DHCP request message,if can recognize this flag,the DHCP
server/proxy record the mip type of the specific MS and do relevent
operation based on network policy or user profile.
If can't recognize this option, DHCP server/proxy will ignore it simply.
If MS didn't have the capability to set this flag in DHCP message, it
should send traditional DHCP message without this messagge. And network
should have a default policy or priority to decide if a MS need to be
provided with the proxy MIP support.
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5. Security Considerations
Secure delivery of the configuration information from a DHCP server
to the mobile node (DHCP client) relies on the overall DHCP security.
The messages defined in this document are secured by DHCP security
mechanisms.
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6. Conclusions
We presented DHCP protocol used to indicated that if a MS need the
Proxy MIP capability.
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7. Acknowledgements
The authors gratefully acknowledge the discussions and feedback from
WiMAX Forum NWG attendees.
Yuankui zhao Sep 5, 2007 [Page 9]
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8. References
8.1. Normative References
[DHCPv4] "Dynamic Host Configuration Protocol", RFC 2131,
March 1997, <http://www.ietf.org/rfc/rfc2131.txt>.
[STANDARDS]
"Key words for use in RFCs to Indicate Requirement
Levels", RFC 2119, March 1997,
<ftp://ftp.isi.edu/in-notes/rfc2119>.
Yuankui zhao Sep 5, 2007 [Page 10]
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Authors' Addresses
Yuankui Zhao
Shanghai Huawei Technology Co.LTD
Qian Chang Building
No.450 Jin Yu Road Pudong
Shanghai,201206
china
Phone:
Email: John.zhao@huawei.com
Yuankui zhao Sep 5, 2007 [Page 11]
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Yuankui zhao Sep 5, 2007 [Page 12]
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