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Network Working Group                                       J. ReynoldsRequest for Comments: 1239                                          ISIUpdates: RFCs1229,1230,1231,1232,1233                    June 1991Reassignment of Experimental MIBs to Standard MIBsStatus of this Memo   This RFC specifies an IAB standards track protocol for the Internet   community, and requests discussion and suggestions for improvements.   Please refer to the current edition of the "IAB Official Protocol   Standards" for the standardization state and status of this protocol.   Distribution of this memo is unlimited.Statement   In the past, MIBs have been assigned arcs in the experimental MIB   namespace early in their development and then were not assigned arcs   in the standard MIB namespace until they reached Full Standard   status.  This practice required vendors to revise their   implementations when a MIB went from Draft to Full Standard status,   even though there was probably no substantive technical change in the   definitions.  This practice could also engender operational problems   in the field at an undesirably late stage of the standardization   process.  It was also observed that this practice could discourage   implementation until the Full Standard stage and that this, too,   would be undesirable.  So, a preferable practice is to assign arcs in   the standard MIB namespace at the earliest phase of standardization   and to preserve these assignments as the standard progresses.   This memo specifically updates:RFC 1229 - "Extensions to the Generic-Interface MIB"RFC 1230 - "IEEE 802.4 Token Bus MIB"RFC 1231 - "IEEE 802.5 Token Ring MIB"RFC 1232 - "Definitions of Managed Objects for the DS1 Interface                  Type"RFC 1233 - "Definitions of Managed Objects for the DS3 Interface                  Type"   with new codes.  In the future, consult each MIB publication for new   code assignments.Reynolds                                                        [Page 1]

RFC 1239          Reassignment of Exp MIBs to Std MIBs         June 1991SMI Network Management Old Experimental Codes      Prefix: 1.3.6.1.3       (experimental)      Decimal   Name          Description      -------   ----          -----------            2   T1-Carrier    T1 Carrier Objects            4   IEEE802.5     Token Ring-like Objects            6   Interface     Generic Interface Extension Objects            7   IEEE802.4     Token Bus-like Objects           15   DS3           DS3 Interface TypeSMI Network Management New Standard Codes      Prefix: 1.3.6.1.2.1     (standard-mib)      Decimal   Name          Description      -------   ----          -----------           12   Generic IF    Generic Interface Extension Objects      Prefix: 1.3.6.1.2.1.10  (transmission)      Decimal   Name          Description      -------   ----          -----------            8   IEEE802.4     Token Bus-like Objects            9   IEEE802.5     Token Ring-like Objects           18   DS1           T1 Carrier Objects           30   DS3           DS3 Interface TypeSecurity Considerations   Security issues are not discussed in this memo.Author's Address   Joyce K. Reynolds   USC/Information Sciences Institute   4676 Admiralty Way   Marina del Rey, CA  90292-6695   Phone:  (213) 822-1511   EMail:  jkrey@isi.eduReynolds                                                        [Page 2]