Network Working Group R. Droms Internet-Draft Cisco Systems Expires: October 15, 2003 April 16, 2003 Unused DHCP Option Codes draft-ietf-dhc-unused-optioncodes-02 Status of this Memo This document is an Internet-Draft and is in full conformance with all provisions of Section 10 of RFC2026. 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 October 15, 2003. Copyright Notice Copyright (C) The Internet Society (2003). All Rights Reserved. Abstract Prior to the publication of RFC2489 (which was updated by RFC2939), several option codes were assigned to proposed DHCP options that were subsequently never used. This document lists those unused option codes and will be used to confirm that these option codes can be reused for other DHCP options in the future. 1. Introduction This document lists the unused DHCP option codes from the IANA list of BOOTP and DHCP option codes [1]. Each option code includes any known documentation and contact information from the IANA list. Droms Expires October 15, 2003 [Page 1] Internet-Draft Unused DHCP Option Codes April 2003 2. Unused Option Codes The option codes listed in this section are to be returned to IANA for reassignment to new options. 2.1 Service Location Protocol Naming Authority Code: 80 Name: Service Location Protocol Naming Authority Defined in: (expired Internet-Draft) Contact: Charlie Perkins Reason to recover: Never published as standard 2.2 Relay Agent Options Codes: 83, 84 Name: Relay Agent Options Defined in: Early draft of RFC3046 [2] Contact: (none) Reason to recover: Not defined in RFC3046 as published 2.3 IEEE 1003.1 POSIX Timezone Code: 88 Name: IEEE 1003.1 POSIX Timezone Defined in: (expired Internet-Draft) Contact: Mike Carney Reason to recover: Never published as standard 2.4 FQDNs in DHCP Options Code: 89 Droms Expires October 15, 2003 [Page 2] Internet-Draft Unused DHCP Option Codes April 2003 Name: FQDNs in DHCP Options Defined in: (expired Internet-Draft) Contact: Ralph Droms Reason to recover: Never published as standard 2.5 VINES TCP/IP Server Code: 91 Name: VINES TCP/IP Server Defined in: (none) Contact: (none) Reason to recover: Never published as Internet-Draft 2.6 Server Selection Code: 92 Name: Server Selection Defined in: (none) Contact: (none) Reason to recover: Never published as Internet-Draft 2.7 LDAP Servers Code: 95 Name: LDAP Servers Defined in: (none) Contact: (none) Reason to recover: Never published as Internet-Draft Droms Expires October 15, 2003 [Page 3] Internet-Draft Unused DHCP Option Codes April 2003 2.8 IPv6 Transition Code: 96 Name: IPv6 Transition Defined in: (expired Internet-Draft) Contact: Dan Harrington Reason to recover: Never published as standard 2.9 Printer Name Code: 100 Name: Printer Name Defined in: (none) Contact: (none) Reason to recover: Never published as Internet-Draft 2.10 Multicast Assignment through DHCP Code: 101 Name: Multicast Assignment through DHCP Defined in: (expired Internet-Draft) Contact: Baiju Patel, Munil Shah Reason to recover: Never published as standard 2.11 Swap Path Code: 108 Name: Swap Path Defined in: (none) Contact: (none) Droms Expires October 15, 2003 [Page 4] Internet-Draft Unused DHCP Option Codes April 2003 Reason to recover: Never published as Internet-Draft 2.12 IPX Compatibility Code: 110 Name: IPX Compatibility Defined in: (none) Contact: Juan Luciani Reason to recover: Never published as Internet-Draft 2.13 Netinfo Parameters Codes: 112, 113 Name: Netinfo Address, Netinfo Tag Defined in: (none) Contact: Marc Majka Reason to recover: Never published as Internet-Draft 2.14 URL Code: 114 Name: URL Defined in: (none) Contact: Vinod Valloppillil Reason to recover: Never published as Internet-Draft 2.15 Failover Code: 115 Name: Failover Droms Expires October 15, 2003 [Page 5] Internet-Draft Unused DHCP Option Codes April 2003 Defined in: Early revisions of "DHCP Failover Protocol" [3] Contact: Kim Kinnear Reason to recover: Current version of "DHCP Failover Protocol" does not use a DHCP option 3. Option codes used in PXE Specification The following option codes are used in the "Preboot Execution Environment (PXE) Specification, Version 2.1" [4]. However, none of these option codes have been specified as a Standards-track RFC. 3.1 Client System Code: 93 Name: Client System Defined in: (none) Contact: (none) Reason to recover: Never published as Internet-Draft 3.2 Client NDI Code: 94 Name: Client NDI Defined in: (none) Contact: (none) Reason to recover: Never published as Internet-Draft 3.3 UUID/GUID Client Identifier Code: 97 Name: UUID/GUID Client Identifier Defined in: (expired Internet-Draft) Droms Expires October 15, 2003 [Page 6] Internet-Draft Unused DHCP Option Codes April 2003 Contact: Dan Harrington Reason to recover: Never published as standard 4. Option Code Extensions Note that these option codes are identified in draft-volz-dhc- extended-optioncodes-00 [6] as part of a mechanism for extending the 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 for reassignment to other DHCP options. Codes: 126, 127 Name: Option Code Extensions Defined in: (expired Internet-Draft) Contact: Ralph Droms Reason to recover: Never published as standard; note that these option codes are mentioned as 5. Already Returned for Reassignment The option codes 99, 102-107, 109 and 111 have already been returned for reassignment to future DHCP options. 6. IANA Considerations When this document has been published as an Informational RFC, IANA will be requested to return the unused DHCP option codes to the list of available option codes. These option codes may be reassigned to new DHCP options, according to the procedures in RFC 2939 [5]. References [1] Assigned Numbers Editor, IANA., "BOOTP and DHCP Parameters", http://www.iana.org/assignments/bootp-dhcp-parameters, February 2003. [2] Patrick, M., "DHCP Relay Agent Information Option", RFC 3046, January 2001. [3] Droms, R., Kinnear, K., Stapp, M., Volz, B., Gonczi, S., Rabil, G., Dooley, M. and A. Kapur, "DHCP Failover Protocol", draft- Droms Expires October 15, 2003 [Page 7] Internet-Draft Unused DHCP Option Codes April 2003 ietf-dhc-failover-11.txt (work in progress), November 2002. [4] Intel Corporation, "Preboot Execution Environment (PXE) Specification Version 2.1", http://www.pix.net/software/pxeboot/archive/pxespec.pdf, September 1999. [5] Droms, R., "Procedures and IANA Guidelines for Definition of New DHCP Options and Message Types", BCP 43, RFC 2939, September 2000. [6] Volz, B., Droms, R. and T. Lemon, "Extending DHCP Options Codes", draft-volz-dhc-extended-optioncodes-00.txt (work in progress), September 2000. Author's Address Ralph Droms Cisco Systems 250 Apollo Drive Chelmsford, MA 01824 USA Phone: +1 978 497 4733 EMail: rdroms@cisco.com Droms Expires October 15, 2003 [Page 8] Internet-Draft Unused DHCP Option Codes April 2003 Full Copyright Statement Copyright (C) The Internet Society (2003). All Rights Reserved. This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implementation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into languages other than English. The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assigns. This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Acknowledgement Funding for the RFC Editor function is currently provided by the Internet Society. Droms Expires October 15, 2003 [Page 9]