draft-ietf-dhc-unused-optioncodes-03.txt   draft-ietf-dhc-unused-optioncodes-04.txt 
Network Working Group R. Droms Network Working Group R. Droms
Internet-Draft Cisco Systems Internet-Draft Cisco Systems
Expires: December 6, 2003 June 7, 2003 Expires: December 26, 2003 June 27, 2003
Unused DHCP Option Codes Unused DHCP Option Codes
draft-ietf-dhc-unused-optioncodes-03 draft-ietf-dhc-unused-optioncodes-04
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.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet- other groups may also distribute working documents as Internet-
Drafts. Drafts.
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
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.
This Internet-Draft will expire on December 6, 2003. This Internet-Draft will expire on December 26, 2003.
Copyright Notice Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved. Copyright (C) The Internet Society (2003). All Rights Reserved.
Abstract Abstract
Prior to the publication of RFC2489 (which was updated by RFC2939), Prior to the publication of RFC2489 (which was updated by RFC2939),
several option codes were assigned to proposed DHCP options that were several option codes were assigned to proposed DHCP options that were
subsequently never used. This document lists those unused option subsequently never used. This document lists those unused option
codes and will be used to confirm that these option codes can be codes and will be used to confirm that these option codes can be
reused for other DHCP options in the future. reused for other DHCP options in the future.
1. Introduction 1. Introduction
This document lists the unused DHCP option codes from the IANA list This document lists the unused DHCP option codes from the IANA list
of BOOTP and DHCP option codes [1]. Each option code includes any of BOOTP and DHCP option codes [1]. Each option code includes any
known documentation and contact information from the IANA list. known documentation and contact information from the IANA list.
2. Unused Option Codes 2. Unused DHCP Option Codes to be Reassigned to Future DHCP Options
The option codes listed in this section are to be returned to IANA The option codes listed in this section are to be returned to IANA
for reassignment to new options. for reassignment to new options. Responses from associated contact
persons are noted where they have been received.
2.1 Service Location Protocol Naming Authority 2.1 Service Location Protocol Naming Authority
Code: 80 Code: 80
Name: Service Location Protocol Naming Authority Name: Service Location Protocol Naming Authority
Defined in: (expired Internet-Draft) Defined in: (expired Internet-Draft)
Contact: Charlie Perkins Contact: Charlie Perkins
Reason to recover: Never published as standard and not in general use Reason to recover: Never published as standard and not in general use
2.2 Relay Agent Options 2.2 Relay Agent Options
Codes: 83, 84 Codes: 83, 84
Name: Relay Agent Options Name: Relay Agent Options
Defined in: Early draft of RFC3046 [2] Defined in: Early draft of RFC3046 [4]
Contact: (none) Contact: (none)
Reason to recover: Not defined in RFC3046 as published Reason to recover: Not defined in RFC3046 as published
2.3 IEEE 1003.1 POSIX Timezone 2.3 IEEE 1003.1 POSIX Timezone
Code: 88 Code: 88
Name: IEEE 1003.1 POSIX Timezone Name: IEEE 1003.1 POSIX Timezone
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Defined in: (expired Internet-Draft) Defined in: (expired Internet-Draft)
Contact: Mike Carney Contact: Mike Carney
Reason to recover: Never published as standard and not in general use Reason to recover: Never published as standard and not in general use
2.4 FQDNs in DHCP Options 2.4 FQDNs in DHCP Options
Code: 89 Code: 89
Name: FQDNs in DHCP Options Name: FQDNs in DHCP Options
Defined in: (expired Internet-Draft) Defined in: (expired Internet-Draft)
Contact: Ralph Droms Contact: Ralph Droms; agrees that option code should be
reassigned
Reason to recover: Never published as standard and not in general use Reason to recover: Never published as standard and not in general use
2.5 VINES TCP/IP Server 2.5 VINES TCP/IP Server
Code: 91 Code: 91
Name: VINES TCP/IP Server Name: VINES TCP/IP Server
Defined in: (none) Defined in: (none)
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Reason to recover: Never published as Internet-Draft Reason to recover: Never published as Internet-Draft
2.8 IPv6 Transition 2.8 IPv6 Transition
Code: 96 Code: 96
Name: IPv6 Transition Name: IPv6 Transition
Defined in: (expired Internet-Draft) Defined in: (expired Internet-Draft)
Contact: Dan Harrington Contact: Dan Harrington; agrees that option code should be
reassigned
Reason to recover: Never published as standard and not in general use Reason to recover: Never published as standard and not in general use
2.9 Printer Name 2.9 Printer Name
Code: 100 Code: 100
Name: Printer Name Name: Printer Name
Defined in: (none) Defined in: (none)
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Reason to recover: Never published as Internet-Draft Reason to recover: Never published as Internet-Draft
2.12 IPX Compatibility 2.12 IPX Compatibility
Code: 110 Code: 110
Name: IPX Compatibility Name: IPX Compatibility
Defined in: (none) Defined in: (none)
Contact: Juan Luciani Contact: Juan Luciani; agress that option code should be
reassigned
Reason to recover: Never published as Internet-Draft Reason to recover: Never published as Internet-Draft
2.13 Netinfo Parameters 2.13 Netinfo Parameters
Codes: 112, 113 Codes: 112, 113
Name: Netinfo Address, Netinfo Tag Name: Netinfo Address, Netinfo Tag
Defined in: (none) Defined in: (none)
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Reason to recover: Never published as Internet-Draft Reason to recover: Never published as Internet-Draft
2.14 URL 2.14 URL
Code: 114 Code: 114
Name: URL Name: URL
Defined in: (none) Defined in: (none)
Contact: Vinod Valloppillil Contact: Vinod Valloppillil
Reason to recover: Never published as Internet-Draft Reason to recover: Never published as Internet-Draft
2.15 Failover 2.15 Failover
Code: 115 Code: 115
Name: Failover Name: Failover
Defined in: Early revisions of "DHCP Failover Protocol" [3]
Defined in: Early revisions of "DHCP Failover Protocol" [5]
Contact: Kim Kinnear Contact: Kim Kinnear
Reason to recover: Current version of "DHCP Failover Protocol" does Reason to recover: Current version of "DHCP Failover Protocol" does
not use a DHCP option not use a DHCP option
3. Option codes used in PXE Specification 3. Option codes used in PXE Specification
The following option codes are used in the "Preboot Execution The following option codes are used in the "Preboot Execution
Environment (PXE) Specification, Version 2.1" [4]. However, although Environment (PXE) Specification, Version 2.1" [2]. However, although
these options are in widespread use by devices that use PXE, none of these options are in widespread use by devices that use PXE, none of
these option codes have been specified as a Standards-track RFC. these option codes have been described in a published RFC.
The dhc WG will endeavor to have specifications for these options The dhc WG will endeavor to have specifications for these options
published. published.
3.1 Client System 3.1 Client System
Code: 93 Code: 93
Name: Client System Name: Client System
Defined in: (none) Defined in: "Preboot Execution Environment (PXE)
Specification, Version 2.1" [2]
Contact: (none) Contact: Michael Johnston
3.2 Client NDI 3.2 Client NDI
Code: 94 Code: 94
Name: Client NDI Name: Client NDI
Defined in: (none) Defined in: "Preboot Execution Environment (PXE)
Specification, Version 2.1" [2]
Contact: (none) Contact: Michael Johnston
3.3 UUID/GUID Client Identifier 3.3 UUID/GUID Client Identifier
Code: 97 Code: 97
Name: UUID/GUID Client Identifier Name: UUID/GUID Client Identifier
Defined in: (expired Internet-Draft) Defined in: "Preboot Execution Environment (PXE)
Contact: Dan Harrington Specification, Version 2.1" [2] (and an expired Internet-Draft)
Contact: Dan Harrington, Michael Johnston
4. Option Code Extensions 4. Option Code Extensions
Note that these option codes are identified in draft-volz-dhc- Note that these option codes are identified in draft-volz-dhc-
extended-optioncodes-00 [5] as part of a mechanism for extending the extended-optioncodes-00 [3] as part of a mechanism for extending the
set of option codes available to DHCP. If these option codes are not set of option codes available to DHCP. If these option codes are not
used for DHCP option code extension, they will be returned to IANA used for DHCP option code extension, they will be returned to IANA
for reassignment to other DHCP options. for reassignment to other DHCP options.
Codes: 126, 127 Codes: 126, 127
Name: Option Code Extensions Name: Option Code Extensions
Defined in: (expired Internet-Draft) Defined in: (expired Internet-Draft)
Contact: Ralph Droms Contact: Ralph Droms
Reason to recover: Never published as standard; note that these Reason to recover: Never published as standard; note that these
option codes are mentioned in "Extending DHCP Options Codes" [5]. option codes are mentioned in "Extending DHCP Options Codes" [3].
5. Already Returned for Reassignment 5. Already Returned for Reassignment
The option codes 99, 102-107, 109 and 111 have already been returned The option codes 99, 102-107, 109 and 111 have already been returned
for reassignment to future DHCP options. for reassignment to future DHCP options.
6. IANA Considerations 6. IANA Considerations
When this document has been published as an Informational RFC, IANA When this document has been published as an Informational RFC, IANA
will be requested to return the unused DHCP option codes to the list will be requested to return the unused DHCP option codes to the list
of available option codes. These option codes may be reassigned to of available option codes. These option codes may be reassigned to
new DHCP options, according to the procedures in RFC 2939 [6]. new DHCP options, according to the procedures in RFC 2939 [6].
Normative References Normative References
[1] Assigned Numbers Editor, IANA., "BOOTP and DHCP Parameters", [1] Assigned Numbers Editor, IANA., "BOOTP and DHCP Parameters",
http://www.iana.org/assignments/bootp-dhcp-parameters, http://www.iana.org/assignments/bootp-dhcp-parameters,
February 2003. February 2003.
[2] Patrick, M., "DHCP Relay Agent Information Option", RFC 3046, [2] Intel Corporation, "Preboot Execution Environment (PXE)
January 2001.
[3] Droms, R., Kinnear, K., Stapp, M., Volz, B., Gonczi, S., Rabil,
G., Dooley, M. and A. Kapur, "DHCP Failover Protocol", draft-
ietf-dhc-failover-12.txt (work in progress), November 2002.
[4] Intel Corporation, , "Preboot Execution Environment (PXE)
Specification Version 2.1", Specification Version 2.1",
http://www.pix.net/software/pxeboot/archive/pxespec.pdf, http://www.pix.net/software/pxeboot/archive/pxespec.pdf,
September 1999. September 1999.
[5] Volz, B., Droms, R. and T. Lemon, "Extending DHCP Options [3] Volz, B., Droms, R. and T. Lemon, "Extending DHCP Options
Codes", draft-volz-dhc-extended-optioncodes-00.txt (work in Codes", draft-volz-dhc-extended-optioncodes-00.txt (work in
progress), September 2000. progress), September 2000.
Informative References
[4] Patrick, M., "DHCP Relay Agent Information Option", RFC 3046,
January 2001.
[5] Droms, R., Kinnear, K., Stapp, M., Volz, B., Gonczi, S., Rabil,
G., Dooley, M. and A. Kapur, "DHCP Failover Protocol", draft-
ietf-dhc-failover-12.txt (work in progress), November 2002.
[6] Droms, R., "Procedures and IANA Guidelines for Definition of New [6] Droms, R., "Procedures and IANA Guidelines for Definition of New
DHCP Options and Message Types", BCP 43, RFC 2939, September DHCP Options and Message Types", BCP 43, RFC 2939, September
2000. 2000.
Author's Address Author's Address
Ralph Droms Ralph Droms
Cisco Systems Cisco Systems
250 Apollo Drive 1414 Massachusetts Avenue
Chelmsford, MA 01824 Boxborough, MA 01719
USA USA
Phone: +1 978 497 4733 Phone: +1 978 936 1674
EMail: rdroms@cisco.com EMail: rdroms@cisco.com
Full Copyright Statement Full Copyright Statement
Copyright (C) The Internet Society (2003). All Rights Reserved. Copyright (C) The Internet Society (2003). 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
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