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Network Working Group                                           J. FlickRequest for Comments: 3638                       Hewlett-Packard CompanyObsoletes:1643                                                 C. HeardCategory: Informational                                       Consultant                                                          September 2003Applicability Statement for Reclassification ofRFC 1643 to Historic StatusStatus of this Memo   This memo provides information for the Internet community.  It does   not specify an Internet standard of any kind.  Distribution of this   memo is unlimited.Copyright Notice   Copyright (C) The Internet Society (2003).  All Rights Reserved.Abstract   This memo recommends thatRFC 1643 be reclassified as an Historic   document and provides the supporting motivation for that   recommendation.1.  Details   STD 50,RFC 1643 [RFC1643], "Definitions of Managed Objects for the   Ethernet-like Interface Types", and its SMIv2 equivalent,RFC 1650   [RFC1650], are applicable to half-duplex 10 Mb/s Ethernet interfaces   only.  Subsequent to the 1994 publication of these documents, 100   Mb/s, 1000 Mb/s, and 10 Gb/s Ethernet interface types have been   developed, and full-duplex operation at 10 Mb/s has been   standardized.  Updates toRFC 1650 have been produced to accommodate   these new technologies [RFC2358] [RFC2665] [RFC2666] [RFC3635].   These updates define new MIB objects to supplement those defined inRFC 1643 andRFC 1650 and in addition deprecate some of the objects   inRFC 1643 andRFC 1650 that are no longer considered useful.  They   also levy a requirement for implementations of the EtherLike-MIB to   support the MAU-MIB [RFC2239] [RFC2668] [RFC3636] as well.Flick & Heard                Informational                      [Page 1]

RFC 3638RFC 1643 to Historic Status         September 2003RFC 1643 is an obsolete specification, overtaken by events.  Its   SMIv2 equivalent,RFC 1650, was officially retired in 1998.  New   implementations -- even those that support only half-duplex 10 Mb/s   interfaces -- should comply with in the latest version of the   specification, currentlyRFC 3635 [RFC3635] andRFC 2666 [RFC2666],   instead ofRFC 1643.  It is therefore recommended thatRFC 1643 be   reclassified as an Historic document.2.  Effect on Other Standards Track Documents   Reclassification ofRFC 1643 will have no impact on the status of any   standards track RFC because no standards track RFC cites it as a   normative reference.  An RFC content search made with the tools   available athttp://www.rfc-editor.org reveals the following   standards track documents that citeRFC 1643:      Document               Title      --------               -----RFC 2020         IEEE 802.12 Interface MIBRFC 2358         Definitions of Managed Objects for the                       Ethernet-like Interface TypesRFC 2665         Definitions of Managed Objects for the                       Ethernet-like Interface TypesRFC 2720         Traffic Flow Measurement: Meter MIBRFC 3635         Definitions of Managed Objects for the                       Ethernet-like Interface TypesRFC 2020 [RFC2020] contains DOT12-IF-MIB, which is the MIB module for   managing IEEE 802.12 100VG-AnyLAN interfaces.  It refers toRFC 1643   in the context of an admonition not to implement the EtherLike-MIB   for any interface where the DOT12-IF-MIB is implemented.RFC 2358 [RFC2358],RFC 2665 [RFC2665], andRFC 3635 [RFC3635] all   contain updated versions of the EtherLike-MIB.  They refer toRFC1643 in the context of explaining the history of the EtherLike-MIB,   and the citation inRFC 3635 is explicitly listed as a non-normative   reference.RFC 2720 [RFC2720] contains the FLOW-METER-MIB.  It refers toRFC1643 only in an ASN.1 comment in the MIB module.  Omission of that   comment would not preclude correct implementation of the MIB module.   Clearly, none of these citations are normative.Flick & Heard                Informational                      [Page 2]

RFC 3638RFC 1643 to Historic Status         September 20033.  Security Considerations   Reclassification ofRFC 1643 will not, in and of itself, have any   effect on the security of the Internet.4.  Normative References   [RFC1643]   Kastenholz, F., "Definitions of Managed Objects for the               Ethernet-like Interface Types", STD 50,RFC 1643, July               1994.   [RFC1650]   Kastenholz, F., "Definitions of Managed Objects for the               Ethernet-like Interface Types using SMIv2",RFC 1650,               August 1994.   [RFC2020]   Flick, J., "IEEE 802.12 Interface MIB",RFC 2020, October               1996.   [RFC2239]   de Graaf, K., Romascanu, D., McMaster, D., McCloghrie, K.               and S. Roberts, "Definitions of Managed Objects for IEEE               802.3 Medium Attachment Units (MAUs) using SMIv2",RFC2239, November 1997.   [RFC2358]   Flick, J. and J. Johnson, "Definitions of Managed Objects               for the Ethernet-like Interface Types",RFC 2358, June               1998.   [RFC2665]   Flick, J. and J. Johnson, "Definitions of Managed Objects               for the Ethernet-like Interface Types",RFC 2665, August               1999.   [RFC2666]   Flick, J., "Definitions of Object Identifiers for               Identifying Ethernet Chip Sets",RFC 2666, August 1999.   [RFC2668]   Smith, A., Flick, J., deGraaf, K., Romascanu, D.,               McMaster, D., McCloghrie, K. and S. Roberts, "Definitions               of Managed Objects for IEEE 802.3 Medium Attachment Units               (MAUs)",RFC 2668, August 1999.   [RFC2720]   Brownlee, N., "Traffic Flow Measurement: Meter MIB",RFC2720, October 1999.   [RFC3635]   Flick, J., "Definitions of Managed Objects for the               Ethernet-like Interface Types",RFC 3635, September 2003.Flick & Heard                Informational                      [Page 3]

RFC 3638RFC 1643 to Historic Status         September 2003   [RFC3636]   Flick, J., "Definitions of Managed Objects for IEEE 802.3               Medium Attachment Units (MAUs)",RFC 3636, September               2003.5.  Authors' Addresses   John Flick   Hewlett-Packard Company   8000 Foothills Blvd.  M/S 5557   Roseville, CA 95747-5557   USA   Phone: +1 916 785 4018   Fax:   +1 916 785 1199   EMail: johnf@rose.hp.com   C. M. Heard   600 Rainbow Dr. #141   Mountain View, CA 94041-2542   USA   Phone: +1 650 964 8391   EMail: heard@pobox.comFlick & Heard                Informational                      [Page 4]

RFC 3638RFC 1643 to Historic Status         September 20036.  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 assignees.   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.Flick & Heard                Informational                      [Page 5]