draft-ietf-dhc-concat-02.txt   draft-ietf-dhc-concat-03.txt 
Network Working Group Ted Lemon Network Working Group Ted Lemon
Internet Draft Nominum, Inc. Internet Draft Nominum, Inc.
Stuart Cheshire Stuart Cheshire
Apple Computer, Inc. Apple Computer, Inc.
Obsoletes: draft-ietf-dhc-concat-01.txt October, 2001 Obsoletes: draft-ietf-dhc-concat-02.txt April, 2002
Expires April, 2002 Expires October, 2002
Encoding Long DHCP Options Encoding Long DHCP Options
<draft-ietf-dhc-concat-02.txt> <draft-ietf-dhc-concat-03.txt>
Status of this Memo Status of this Memo
This document is an Internet-Draft and is in full conformance with This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026. all provisions of Section 10 of RFC2026.
This document is an Internet-Draft. Internet-Drafts are working This document is an Internet-Draft. Internet-Drafts are working
documents of the Internet Engineering Task Force (IETF), its areas, documents of the Internet Engineering Task Force (IETF), its areas,
and its working groups. Note that other groups may also distribute and its working groups. Note that other groups may also distribute
working documents as Internet-Drafts. working documents as Internet-Drafts.
skipping to change at line 35 skipping to change at line 35
material or to cite them other than as "work in progress". material or to cite them other than as "work in progress".
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt http://www.ietf.org/ietf/1id-abstracts.txt
The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html. http://www.ietf.org/shadow.html.
Abstract Abstract
This document specifies the processing rules for DHCP options that
appear multiple times in the same message. Multiple instances of
the same option are generated when an option exceeds 255 octets in
size (the maximum size of a single option) or when an option needs
to be split apart in order to take advantage of DHCP option
overloading (Dynamic Host Configuration Protocol [1], Section 4.1.
When multiple instances of the same option appear in the options,
file and/or sname fields in a DHCP packet, the contents of these
options are concatenated together to form a single option prior to
processing.
This draft specifies how DHCP options in a DHCP packet can be This draft specifies how DHCP options in a DHCP packet can be
aggregated so that DHCP protocol agents can send options that are aggregated so that DHCP protocol agents can send options that are
more than 255 bytes in length. more than 255 bytes in length.
Introduction Introduction
The DHCP protocol [1] specifies objects called "options" that are The DHCP protocol [1] specifies objects called "options" that are
encoded in the DHCP packet to pass information between DHCP encoded in the DHCP packet to pass information between DHCP
protocol agents. These options are encoded as a one-byte type protocol agents. These options are encoded as a one-byte type
code, a one-byte length, and a buffer consisting of the number of code, a one-byte length, and a buffer consisting of the number of
skipping to change at line 247 skipping to change at line 258
University, March 1997. University, March 1997.
[3] Bradner, S., "Key words for use in RFCs to indicate requirement [3] Bradner, S., "Key words for use in RFCs to indicate requirement
levels", RFC 2119, Harvard University, March 1997. levels", RFC 2119, Harvard University, March 1997.
[4] Croft, W., Gilmore, J., "BOOTSTRAP PROTOCOL (BOOTP)", RFC951, [4] Croft, W., Gilmore, J., "BOOTSTRAP PROTOCOL (BOOTP)", RFC951,
Stanford University, Sun Microsystems, September 1985. Stanford University, Sun Microsystems, September 1985.
Author Information Author Information
Ted Lemon Ted Lemon
Nominum, Inc. Nominum, Inc.
950 Charter Street 2385 Bay Road
Redwood City, CA 94043 Redwood City, CA 94043
USA USA
email: Ted.Lemon@nominum.com email: mellon@nominum.com
Stuart Cheshire Stuart Cheshire
Apple Computer, Inc. Apple Computer, Inc.
1 Infinite Loop 1 Infinite Loop
Cupertino Cupertino
California 95014 California 95014
USA USA
Phone: +1 408 974 3207 Phone: +1 408 974 3207
EMail: rfc@stuartcheshire.org EMail: rfc@stuartcheshire.org
Expiration Expiration
This document will expire on April 31, 2002. This document will expire on October 31, 2002.
Full Copyright Statement Full Copyright Statement
Copyright (C) The Internet Society (2001). All Rights Reserved. Copyright (C) 2001-2002 The Internet Society. All Rights Reserved.
This document and translations of it may be copied and furnished to This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of Internet organizations, except as needed for the purpose of
 End of changes. 

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