4.  Object Definitions

SONET-MIB DEFINITIONS ::= BEGIN


IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE,
    Integer32, transmission
          FROM SNMPv2-SMI
    DisplayString, TruthValue
          FROM SNMPv2-TC
    MODULE-COMPLIANCE, OBJECT-GROUP
          FROM SNMPv2-CONF
    ifIndex
          FROM IF-MIB
    PerfCurrentCount, PerfIntervalCount
          FROM PerfHist-TC-MIB;

--  This is the MIB module for the SONET/SDH Interface objects.


sonetMIB MODULE-IDENTITY
    LAST-UPDATED "9810190000Z"
    ORGANIZATION "IETF AToM MIB Working Group"
    CONTACT-INFO
      "Kaj Tesink
       Telcordia Technologies
       Tel: (732) 758-5254
       Fax: (732) 758-2269
       E-mail: kaj@research.telcordia.com."
    DESCRIPTION
         "The MIB module to describe
         SONET/SDH interfaces objects."

    REVISION      "9810190000Z"
    DESCRIPTION
        "The key changes made to this MIB module
        since its initial publication in RFC 1595
        are as follows.

        (1) The MODULE-IDENTITY has been updated to reflect the
            changes to the MIB.

        (2) Where applicable, the textual conventions
            PerfCurrentCount and PerfIntervalCount from
            PerfHist-TC-MIB have been used in place of Gauge32.

        (3) An agent now has the option to delay updates to
            the various performance counts in lieu of performing
            retroactive adjustments upon entering into or exiting
            from unavailable time. This implementation option is
            described in Appendix A of this memo.

        (4) In order to make the SONET-MIB more useful for
            circuit provisioning, the formerly read-only objects
            sonetMediumType, sonetMediumLineCoding,
            sonetMediumLineType, and sonetMediumCircuitIdentifier
            have been given a MAX-ACCESS of read-write. The
            MIN-ACCESS remains read-only.

        (5) The DESCRIPTION clause for sonetMediumTimeElapsed has
            been updated to describe its behaviour if the duration
            of the current interval exceeds the maximum value.

        (6) The DESCRIPTION clause for sonetMediumValidIntervals
            has been updated to describe its behaviour when some
            intervals may be unavailable, and the object
            sonetMediumInvalidIntervals has been added to keep
            count of the number of missing intervals (if any).

        (7) The object sonetMediumLoopbackConfig has been added
            to enable or disable loopback configurations.

        (8) Because the error count thresholds for declaring
            severely errored seconds that are specified in ANSI
            T1.231-1993, ITU-T G.826-1995, and ANSI T1.231-1997
            are all different from each other and from the thresholds
            specified in RFC 1595, an enumerated INTEGER object
            sonetSESthresholdSet has been added to allow an agent
            to specify which threshold set is in use. Text has
            been added to Section 3 stating that if this object is
            not implemented the thresholds specified in RFC 1595

            should be assumed, and the table containing those
            thresholds has been moved to Appendix B of this memo.

        (9) A column with SYNTAX TruthValue has been added to each
            interval table.  The purpose of the additional column
            is to indicate, for each interval, whether the data
            is valid in the sense intended by ANSI T1.231 clause
            9.1.2.2 [31][35]. The objects in question are:

                sonetSectionIntervalValidData
                sonetLineIntervalValidData
                sonetFarEndLineIntervalValidData
                sonetPathIntervalValidData
                sonetFarEndPathIntervalValidData
                sonetVTIntervalValidData
                sonetFarEndVTIntervalValidData

       (10) The ranges for sonetPathCurrentStatus and
            sonetVTCurrentStatus have been made consistent
            with the DESCRIPTION clauses.

       (11) The conformance information has been updated. Previous
            conformance information from RFC 1595 has been
            deprecated. Some typographical errors in the deprecated
            section have been corrected in order to prevent
            MIB compilation errors."

    REVISION      "9401030000Z"
    DESCRIPTION
        "The RFC1595 version of this MIB module."

    ::= { transmission 39 }


--  This is the MIB module for the SONET/SDH objects

sonetObjects      OBJECT IDENTIFIER ::= { sonetMIB 1 }

sonetObjectsPath  OBJECT IDENTIFIER ::= { sonetMIB 2 }

sonetObjectsVT    OBJECT IDENTIFIER ::= { sonetMIB 3 }


-- groups in the SONET/SDH MIB module

sonetMedium        OBJECT IDENTIFIER ::= { sonetObjects 1 }

sonetSection       OBJECT IDENTIFIER ::= { sonetObjects 2 }

sonetLine          OBJECT IDENTIFIER ::= { sonetObjects 3 }

sonetFarEndLine    OBJECT IDENTIFIER ::= { sonetObjects 4 }

sonetPath          OBJECT IDENTIFIER ::= { sonetObjectsPath 1 }

sonetFarEndPath    OBJECT IDENTIFIER ::= { sonetObjectsPath 2 }

sonetVT            OBJECT IDENTIFIER ::= { sonetObjectsVT 1 }

sonetFarEndVT      OBJECT IDENTIFIER ::= { sonetObjectsVT 2 }

-- the SONET/SDH Medium group

-- SONET/SDH interfaces for some applications may be electrical
-- interfaces and not optical interfaces.  This group handles
-- the configuration information for both optical SONET/SDH
-- interfaces and electrical SONET/SDH interfaces.

sonetMediumTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetMediumEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
       "The SONET/SDH Medium table."
     ::= { sonetMedium 1 }

sonetMediumEntry OBJECT-TYPE
    SYNTAX  SonetMediumEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
       "An entry in the SONET/SDH Medium table."
    INDEX   { ifIndex }
     ::= { sonetMediumTable 1 }

SonetMediumEntry ::=
    SEQUENCE {
         sonetMediumType               INTEGER,
         sonetMediumTimeElapsed        Integer32,
         sonetMediumValidIntervals     Integer32,
         sonetMediumLineCoding         INTEGER,
         sonetMediumLineType           INTEGER,
         sonetMediumCircuitIdentifier  DisplayString,
         sonetMediumInvalidIntervals   Integer32,
         sonetMediumLoopbackConfig     BITS
    }

sonetMediumType OBJECT-TYPE
    SYNTAX  INTEGER  {
               sonet(1),
               sdh(2)
            }
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
       "This variable identifies whether a SONET
       or a SDH signal is used across this interface."
    ::= { sonetMediumEntry 1 }

sonetMediumTimeElapsed OBJECT-TYPE
    SYNTAX  Integer32 (1..900)
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The number of seconds, including partial seconds,
       that have elapsed since the beginning of the current
       measurement period. If, for some reason, such as an
       adjustment in the system's time-of-day clock, the
       current interval exceeds the maximum value, the
       agent will return the maximum value."
    ::= { sonetMediumEntry 2 }

sonetMediumValidIntervals OBJECT-TYPE
    SYNTAX  Integer32 (0..96)
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The number of previous 15-minute intervals
       for which data was collected.
       A SONET/SDH interface must be capable
       of supporting at least n intervals.
       The minimum value of n is 4.
       The default of n is 32.
       The maximum value of n is 96.
       The value will be <n> unless the measurement was
       (re-)started within the last (<n>*15) minutes, in which
       case the value will be the number of complete 15
       minute intervals for which the agent has at least
       some data. In certain cases (e.g., in the case
       where the agent is a proxy) it is possible that some
       intervals are unavailable.  In this case, this
       interval is the maximum interval number for
       which data is available. "
    ::= { sonetMediumEntry 3 }

sonetMediumLineCoding OBJECT-TYPE
    SYNTAX  INTEGER {
                sonetMediumOther(1),
                sonetMediumB3ZS(2),
                sonetMediumCMI(3),
                sonetMediumNRZ(4),
                sonetMediumRZ(5)
            }
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
       "This variable describes the line coding for
       this interface. The B3ZS and CMI are used for
       electrical SONET/SDH signals (STS-1 and STS-3).
       The Non-Return to Zero (NRZ) and the Return
       to Zero are used for optical SONET/SDH signals."
    ::= { sonetMediumEntry 4 }

sonetMediumLineType OBJECT-TYPE
    SYNTAX  INTEGER {
                sonetOther(1),
                sonetShortSingleMode(2),
                sonetLongSingleMode(3),
                sonetMultiMode(4),
                sonetCoax(5),
                sonetUTP(6)
            }
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
       "This variable describes the line type for
       this interface. The line types are
       Short and Long Range
       Single Mode fiber or Multi-Mode fiber interfaces,
       and coax and UTP for electrical interfaces.  The
       value sonetOther should be used when the Line Type is
       not one of the listed values."
    ::= { sonetMediumEntry 5 }

sonetMediumCircuitIdentifier OBJECT-TYPE
    SYNTAX  DisplayString (SIZE (0..255))
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
       "This variable contains the transmission
       vendor's circuit identifier, for the
       purpose of facilitating troubleshooting.
       Note that the circuit identifier, if available,

       is also represented by ifPhysAddress."
    ::= { sonetMediumEntry 6 }
sonetMediumInvalidIntervals OBJECT-TYPE
    SYNTAX  Integer32 (0..96)
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
        "The number of intervals in the range from
        0 to sonetMediumValidIntervals for which no
        data is available. This object will typically
        be zero except in cases where the data for some
        intervals are not available (e.g., in proxy
        situations)."
    ::= { sonetMediumEntry 7 }

sonetMediumLoopbackConfig OBJECT-TYPE
    SYNTAX      BITS {
                  sonetNoLoop(0),
                  sonetFacilityLoop(1),
                  sonetTerminalLoop(2),
                  sonetOtherLoop(3) }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
       "The current loopback state of the SONET/SDH interface.  The
        values mean:

          sonetNoLoop
             Not in the loopback state. A device that is not
             capable of performing a loopback on this interface
             shall always return this value.

          sonetFacilityLoop
             The received signal at this interface is looped back
             out through the corresponding transmitter in the return
             direction.

          sonetTerminalLoop
             The signal that is about to be transmitted is connected
             to the associated incoming receiver.

          sonetOtherLoop
             Loopbacks that are not defined here."

    ::= { sonetMediumEntry 8 }

sonetSESthresholdSet    OBJECT-TYPE
    SYNTAX   INTEGER {

               other(1),
               Bellcore1991(2),
               ansi1993(3),
               itu1995(4),
               ansi1997(5)
                      }
    MAX-ACCESS      read-write
    STATUS          current
    DESCRIPTION
      "An enumerated integer indicating which
       recognized set of SES thresholds that
       the agent uses for determining severely
       errored seconds and unavailable time.

       other(1)
         None of the following.

       Bellcore1991(2)
         Bellcore TR-NWT-000253, 1991 [32], or
         ANSI T1M1.3/93-005R2, 1993 [22].
         See also Appendix B.

       ansi1993(3)
         ANSI T1.231, 1993 [31], or
         Bellcore GR-253-CORE, Issue 2, 1995 [34]

       itu1995(4)
         ITU Recommendation G.826, 1995 [33]

       ansi1997(5)
         ANSI T1.231, 1997 [35]

       If a manager changes the value of this
       object then the SES statistics collected
       prior to this change must be invalidated."
     ::= { sonetMedium 2 }

-- the SONET/SDH Section group

-- this group consists of 2 tables:
-- - the SONET/SDH Section Current Table
-- - the SONET/SDH Section Interval Table



-- the SONET/SDH Section Current Table

-- The SONET/SDH Section

-- current table contains various statistics
-- being collected for the current 15 minute interval.

sonetSectionCurrentTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetSectionCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
       "The SONET/SDH Section Current table."
     ::= { sonetSection 1 }

sonetSectionCurrentEntry OBJECT-TYPE
    SYNTAX  SonetSectionCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
       "An entry in the SONET/SDH Section Current table."
    INDEX   { ifIndex }
     ::= { sonetSectionCurrentTable 1 }

SonetSectionCurrentEntry ::=
    SEQUENCE {
        sonetSectionCurrentStatus   Integer32,
        sonetSectionCurrentESs      PerfCurrentCount,
        sonetSectionCurrentSESs     PerfCurrentCount,
        sonetSectionCurrentSEFSs    PerfCurrentCount,
        sonetSectionCurrentCVs      PerfCurrentCount
    }


sonetSectionCurrentStatus OBJECT-TYPE
    SYNTAX  Integer32 (1..6)
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "This variable indicates the
       status of the interface.
       The sonetSectionCurrentStatus
       is a bit map represented
       as a sum, therefore,
       it can represent multiple defects
       simultaneously.
       The sonetSectionNoDefect should be
       set if and only if
       no other flag is set.

       The various bit positions are:
             1   sonetSectionNoDefect

             2   sonetSectionLOS
             4   sonetSectionLOF"
     ::= { sonetSectionCurrentEntry 1 }

sonetSectionCurrentESs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The counter associated with the number of Errored
       Seconds encountered by a SONET/SDH
       Section in the current 15 minute interval."
     ::= { sonetSectionCurrentEntry 2 }

sonetSectionCurrentSESs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The counter associated with the number of
       Severely Errored Seconds
       encountered by a SONET/SDH Section in the current 15
       minute interval."
     ::= { sonetSectionCurrentEntry 3 }

sonetSectionCurrentSEFSs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The counter associated with the number of
       Severely Errored Framing Seconds
       encountered by a SONET/SDH Section in the current
       15 minute interval."
    ::= { sonetSectionCurrentEntry 4 }

sonetSectionCurrentCVs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The counter associated with the number of Coding
       Violations encountered by a
       SONET/SDH Section in the current 15 minute interval."
     ::= { sonetSectionCurrentEntry 5 }

-- the SONET/SDH Section Interval Table

-- The SONET/SDH Section Interval Table
-- contains various statistics
-- collected by each system over a maximum
-- of the previous 24 hours of
-- operation.  The past 24 hours may be broken into 96
-- completed 15 minute intervals.
-- A system is required to store at
-- least 4 completed 15 minute interval.
-- The default value is 32 intervals.

sonetSectionIntervalTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetSectionIntervalEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
       "The SONET/SDH Section Interval table."
     ::= { sonetSection 2 }

sonetSectionIntervalEntry OBJECT-TYPE
    SYNTAX  SonetSectionIntervalEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
       "An entry in the SONET/SDH Section Interval table."
    INDEX   { ifIndex,
              sonetSectionIntervalNumber }
     ::= { sonetSectionIntervalTable 1 }

SonetSectionIntervalEntry ::=
    SEQUENCE {
         sonetSectionIntervalNumber  Integer32,
         sonetSectionIntervalESs     PerfIntervalCount,
         sonetSectionIntervalSESs    PerfIntervalCount,
         sonetSectionIntervalSEFSs   PerfIntervalCount,
         sonetSectionIntervalCVs     PerfIntervalCount,
         sonetSectionIntervalValidData  TruthValue
    }


sonetSectionIntervalNumber OBJECT-TYPE
    SYNTAX  Integer32 (1..96)
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
      "A number between 1 and 96, which identifies the
      interval for which the set of statistics is available.
      The interval identified by 1 is the most recently
      completed 15 minute interval,

      and the interval identified
      by N is the interval immediately preceding the
      one identified
      by N-1."
     ::= { sonetSectionIntervalEntry 1 }

sonetSectionIntervalESs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The counter associated with the number of
       Errored Seconds encountered
       by a SONET/SDH Section in a
       particular 15-minute interval
       in the past 24 hours."
     ::= { sonetSectionIntervalEntry 2 }

sonetSectionIntervalSESs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The counter associated with the number of
       Severely Errored Seconds
       encountered by a SONET/SDH Section in a
       particular 15-minute interval
       in the past 24 hours."
    ::= { sonetSectionIntervalEntry 3 }

sonetSectionIntervalSEFSs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The counter associated with the number of
       Severely Errored Framing Seconds
       encountered by a SONET/SDH Section in a
       particular 15-minute interval
       in the past 24 hours."
    ::= { sonetSectionIntervalEntry 4 }

sonetSectionIntervalCVs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The counter associated with the number of Coding

       Violations encountered by a
       SONET/SDH Section in a particular 15-minute interval
       in the past 24 hours."
    ::= { sonetSectionIntervalEntry 5 }

sonetSectionIntervalValidData OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "This variable indicates if the data for this
        interval is valid."
    ::= { sonetSectionIntervalEntry 6 }


-- the SONET/SDH Line group

-- this group consists of 2 tables:
-- - the SONET/SDH Line Current Table
-- - the SONET/SDH Line Interval Table


-- the SONET/SDH Line Current Table

-- The SONET/SDH Line
-- current table contains various statistics
-- being collected for the current 15 minute interval.

sonetLineCurrentTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetLineCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
      "The SONET/SDH Line Current table."
    ::= { sonetLine 1 }

sonetLineCurrentEntry OBJECT-TYPE
    SYNTAX  SonetLineCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
      "An entry in the SONET/SDH Line Current table."
    INDEX   { ifIndex }
    ::= { sonetLineCurrentTable 1 }

SonetLineCurrentEntry ::=
    SEQUENCE {
         sonetLineCurrentStatus    Integer32,

         sonetLineCurrentESs       PerfCurrentCount,
         sonetLineCurrentSESs      PerfCurrentCount,
         sonetLineCurrentCVs       PerfCurrentCount,
         sonetLineCurrentUASs      PerfCurrentCount
     }


sonetLineCurrentStatus OBJECT-TYPE
    SYNTAX  Integer32 (1..6)
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "This variable indicates the
       status of the interface.
       The sonetLineCurrentStatus
       is a bit map represented
       as a sum, therefore,
       it can represent multiple defects
       simultaneously.
       The sonetLineNoDefect should be
       set if and only if
       no other flag is set.

       The various bit positions are:
        1   sonetLineNoDefect
        2   sonetLineAIS
        4   sonetLineRDI"
     ::= { sonetLineCurrentEntry 1 }

sonetLineCurrentESs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of Errored
     Seconds encountered by a SONET/SDH
     Line in the current 15 minute interval."
    ::= { sonetLineCurrentEntry 2 }

sonetLineCurrentSESs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Severely Errored Seconds
     encountered by a SONET/SDH Line in the current 15
     minute

     interval."
    ::= { sonetLineCurrentEntry 3 }

sonetLineCurrentCVs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of Coding
     Violations encountered by a
     SONET/SDH Line in the current 15 minute interval."
    ::= { sonetLineCurrentEntry 4 }

sonetLineCurrentUASs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Unavailable Seconds
     encountered by a SONET/SDH Line in the current 15
     minute
     interval."
    ::= { sonetLineCurrentEntry 5 }


-- the SONET/SDH Line Interval Table

-- The SONET/SDH Line Interval Table
-- contains various statistics
-- collected by each system over a maximum
-- of the previous 24 hours of
-- operation.  The past 24 hours may be broken into 96
-- completed 15 minute intervals.
-- A system is required to store at
-- least 4 completed 15 minute interval.
-- The default value is 32 intervals.

sonetLineIntervalTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetLineIntervalEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
       "The SONET/SDH Line Interval table."
     ::= { sonetLine 2 }

sonetLineIntervalEntry OBJECT-TYPE
    SYNTAX  SonetLineIntervalEntry

    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
       "An entry in the SONET/SDH Line Interval table."
   INDEX   { ifIndex,
             sonetLineIntervalNumber }
   ::= { sonetLineIntervalTable 1 }

SonetLineIntervalEntry ::=
    SEQUENCE {
        sonetLineIntervalNumber    Integer32,
        sonetLineIntervalESs       PerfIntervalCount,
        sonetLineIntervalSESs      PerfIntervalCount,
        sonetLineIntervalCVs       PerfIntervalCount,
        sonetLineIntervalUASs      PerfIntervalCount,
        sonetLineIntervalValidData TruthValue
    }


sonetLineIntervalNumber OBJECT-TYPE
    SYNTAX  Integer32 (1..96)
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
        "A number between 1 and 96, which identifies the
        interval for which the set of statistics is available.
        The interval identified by 1 is the most recently
        completed 15 minute interval,
        and the interval identified
        by N is the interval immediately preceding the
        one identified
        by N-1."
     ::= { sonetLineIntervalEntry 1 }

sonetLineIntervalESs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The counter associated with the number of
       Errored Seconds encountered
       by a SONET/SDH Line in a
       particular 15-minute interval
       in the past 24 hours."
     ::= { sonetLineIntervalEntry 2 }

sonetLineIntervalSESs OBJECT-TYPE
    SYNTAX  PerfIntervalCount

    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "The counter associated with the number of
       Severely Errored Seconds
       encountered by a SONET/SDH Line in a
       particular 15-minute interval
       in the past 24 hours."
      ::= { sonetLineIntervalEntry 3 }

sonetLineIntervalCVs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
      "The counter associated with the number of Coding
      Violations encountered by a
      SONET/SDH Line in a
      particular 15-minute interval
      in the past 24 hours."
    ::= { sonetLineIntervalEntry 4 }

sonetLineIntervalUASs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
      "The counter associated with the
      number of Unavailable Seconds
      encountered by a SONET/SDH Line in
      a particular 15-minute interval
      in the past 24 hours."
    ::= { sonetLineIntervalEntry 5 }

sonetLineIntervalValidData OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "This variable indicates if the data for this
        interval is valid."
    ::= { sonetLineIntervalEntry 6 }

-- The SONET/SDH Far End Line group.
-- This group may only be implemented by SONET/SDH (LTEs)
-- systems that provide for a far end block error (FEBE)
-- information at the SONET/SDH Line Layer.

-- This group consists of two tables:
--    SONET/SDH Far End Line Current Table
--    SONET/SDH Far End Line Interval Table



-- The SONET/SDH Far End Line Current Table

-- The SONET/SDH Far End Line Current table contains
-- various statistics being
-- collected for the current 15 minute interval.
-- The statistics are collected from the far end
-- block error code (FEBE)
-- within the third Z2 byte of the Line Overhead
-- in Broadband ISDN applications.
-- The definitions are the same as described for
-- the near-end information.

sonetFarEndLineCurrentTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetFarEndLineCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
      "The SONET/SDH Far End Line Current table."
    ::= { sonetFarEndLine 1 }

sonetFarEndLineCurrentEntry OBJECT-TYPE
    SYNTAX  SonetFarEndLineCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
      "An entry in the SONET/SDH Far End Line Current table."
    INDEX   { ifIndex }
    ::= { sonetFarEndLineCurrentTable 1 }

SonetFarEndLineCurrentEntry ::=
    SEQUENCE {
        sonetFarEndLineCurrentESs       PerfCurrentCount,
        sonetFarEndLineCurrentSESs      PerfCurrentCount,
        sonetFarEndLineCurrentCVs       PerfCurrentCount,
        sonetFarEndLineCurrentUASs      PerfCurrentCount
       }

sonetFarEndLineCurrentESs OBJECT-TYPE
   SYNTAX  PerfCurrentCount
   MAX-ACCESS  read-only
   STATUS  current
   DESCRIPTION

       "The counter associated with the number of Far
       End Errored Seconds encountered by a SONET/SDH
       interface in the current 15 minute interval."
   ::= { sonetFarEndLineCurrentEntry 1 }

sonetFarEndLineCurrentSESs OBJECT-TYPE
   SYNTAX  PerfCurrentCount
   MAX-ACCESS  read-only
   STATUS  current
   DESCRIPTION
       "The counter associated with the number of
       Far End Severely Errored Seconds
       encountered by a SONET/SDH Medium/Section/Line
       interface in the current 15 minute
       interval."
   ::= { sonetFarEndLineCurrentEntry 2 }

sonetFarEndLineCurrentCVs OBJECT-TYPE
   SYNTAX  PerfCurrentCount
   MAX-ACCESS  read-only
   STATUS  current
   DESCRIPTION
       "The counter associated with the number of
       Far End Coding Violations reported via
       the far end block error count
       encountered by a
       SONET/SDH Medium/Section/Line
       interface in the current 15 minute interval."
   ::= { sonetFarEndLineCurrentEntry 3 }

sonetFarEndLineCurrentUASs OBJECT-TYPE
   SYNTAX  PerfCurrentCount
   MAX-ACCESS  read-only
   STATUS  current
   DESCRIPTION
       "The counter associated with the number of
       Far End Unavailable Seconds
       encountered by a
       SONET/SDH Medium/Section/Line
       interface in the current 15 minute interval."
   ::= { sonetFarEndLineCurrentEntry 4 }


-- The SONET/SDH Far End Line Interval Table

-- The SONET/SDH Far End Line Interval Table
-- contains various statistics
-- collected by each system over a maximum

-- of the previous 24 hours of
-- operation.  The past 24 hours may be broken into 96
-- completed 15 minute intervals.
-- A system is required to store at
-- least 4 completed 15 minute interval.
-- The default value is 32 intervals.

sonetFarEndLineIntervalTable OBJECT-TYPE
   SYNTAX  SEQUENCE OF SonetFarEndLineIntervalEntry
   MAX-ACCESS  not-accessible
   STATUS  current
   DESCRIPTION
      "The SONET/SDH Far End Line Interval table."
   ::= { sonetFarEndLine 2 }

sonetFarEndLineIntervalEntry OBJECT-TYPE
   SYNTAX  SonetFarEndLineIntervalEntry
   MAX-ACCESS  not-accessible
   STATUS  current
   DESCRIPTION
     "An entry in the SONET/SDH Far
     End Line Interval table."
   INDEX   { ifIndex,
             sonetFarEndLineIntervalNumber }
   ::= { sonetFarEndLineIntervalTable 1 }

SonetFarEndLineIntervalEntry ::=
    SEQUENCE {
         sonetFarEndLineIntervalNumber    Integer32,
         sonetFarEndLineIntervalESs       PerfIntervalCount,
         sonetFarEndLineIntervalSESs      PerfIntervalCount,
         sonetFarEndLineIntervalCVs       PerfIntervalCount,
         sonetFarEndLineIntervalUASs      PerfIntervalCount,
         sonetFarEndLineIntervalValidData TruthValue
    }


sonetFarEndLineIntervalNumber OBJECT-TYPE
   SYNTAX  Integer32 (1..96)
   MAX-ACCESS  not-accessible
   STATUS  current
   DESCRIPTION
         "A number between 1 and 96, which identifies the
         interval for which the set of statistics is available.
         The interval identified by 1 is the most recently
         completed 15 minute interval,
         and the interval identified
         by N is the interval immediately preceding the

         one identified
         by N-1."
   ::= { sonetFarEndLineIntervalEntry 1 }

sonetFarEndLineIntervalESs OBJECT-TYPE
   SYNTAX  PerfIntervalCount
   MAX-ACCESS  read-only
   STATUS  current
   DESCRIPTION
        "The counter associated with the number of
        Far End Errored Seconds encountered
        by a SONET/SDH Line
        interface in a particular 15-minute interval
        in the past 24 hours."
  ::= { sonetFarEndLineIntervalEntry 2 }

sonetFarEndLineIntervalSESs OBJECT-TYPE
   SYNTAX  PerfIntervalCount
   MAX-ACCESS  read-only
   STATUS  current
   DESCRIPTION
        "The counter associated with the number of
        Far End Severely Errored Seconds
        encountered by a SONET/SDH Line
        interface in a particular 15-minute interval
        in the past 24 hours."
  ::= { sonetFarEndLineIntervalEntry 3 }

sonetFarEndLineIntervalCVs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
         "The counter associated with the number of
         Far End Coding Violations reported via
         the far end block error count
         encountered by a
         SONET/SDH Line
         interface in a particular 15-minute interval
         in the past 24 hours."
    ::= { sonetFarEndLineIntervalEntry 4 }

sonetFarEndLineIntervalUASs OBJECT-TYPE
   SYNTAX  PerfIntervalCount
   MAX-ACCESS  read-only
   STATUS  current
   DESCRIPTION
       "The counter associated with the number of

       Far End Unavailable Seconds
       encountered by a
       SONET/SDH Line
       interface in a particular 15-minute interval
       in the past 24 hours."
   ::= { sonetFarEndLineIntervalEntry 5 }

sonetFarEndLineIntervalValidData OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "This variable indicates if the data for this
        interval is valid."
    ::= { sonetFarEndLineIntervalEntry 6 }

-- the SONET/SDH Path group

-- this group consists of 2 tables:
-- - the SONET/SDH Path Current Table
-- - the SONET/SDH Path Interval Table


-- the SONET/SDH Path Current Table

-- The SONET/SDH Path
-- current table contains various statistics
-- being collected for the current 15 minute interval.

sonetPathCurrentTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetPathCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
     "The SONET/SDH Path Current table."
::= { sonetPath 1 }

sonetPathCurrentEntry OBJECT-TYPE
    SYNTAX  SonetPathCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
     "An entry in the SONET/SDH Path Current table."
    INDEX   { ifIndex }
::= { sonetPathCurrentTable 1 }

SonetPathCurrentEntry ::=
    SEQUENCE {

        sonetPathCurrentWidth      INTEGER,
        sonetPathCurrentStatus     Integer32,
        sonetPathCurrentESs        PerfCurrentCount,
        sonetPathCurrentSESs       PerfCurrentCount,
        sonetPathCurrentCVs        PerfCurrentCount,
        sonetPathCurrentUASs       PerfCurrentCount
    }


sonetPathCurrentWidth OBJECT-TYPE
    SYNTAX  INTEGER  {
            sts1(1),
            sts3cSTM1(2),
            sts12cSTM4(3),
            sts24c(4),
            sts48cSTM16(5)
     }
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
     "A value that indicates the type of the SONET/SDH
     Path.  For SONET, the assigned types are
     the STS-Nc SPEs, where N = 1, 3, 12, 24, and 48.
     STS-1 is equal to 51.84 Mbps.  For SDH, the assigned
     types are the STM-Nc VCs, where N = 1, 4, and 16."
::= { sonetPathCurrentEntry 1 }

sonetPathCurrentStatus OBJECT-TYPE
    SYNTAX  Integer32 (1..62)
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
      "This variable indicates the
      status of the interface.
      The sonetPathCurrentStatus
      is a bit map represented
      as a sum, therefore,
      it can represent multiple defects
      simultaneously.
      The sonetPathNoDefect should be
      set if and only if
      no other flag is set.

      The various bit positions are:
         1   sonetPathNoDefect
         2   sonetPathSTSLOP
         4   sonetPathSTSAIS
         8   sonetPathSTSRDI

        16   sonetPathUnequipped
        32   sonetPathSignalLabelMismatch"
::= { sonetPathCurrentEntry 2 }

sonetPathCurrentESs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of Errored
     Seconds encountered by a SONET/SDH
     Path in the current 15 minute interval."
::= { sonetPathCurrentEntry 3 }

sonetPathCurrentSESs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Severely Errored Seconds
     encountered by a SONET/SDH Path in the current 15
     minute
     interval."
::= { sonetPathCurrentEntry 4 }

sonetPathCurrentCVs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of Coding
     Violations encountered by a
     SONET/SDH Path in the current 15 minute interval."
::= { sonetPathCurrentEntry 5 }

sonetPathCurrentUASs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Unavailable Seconds
     encountered by a Path in the current
     15 minute interval."
::= { sonetPathCurrentEntry 6 }

-- the SONET/SDH Path Interval Table

-- The SONET/SDH Path Interval Table
-- contains various statistics
-- collected by each system over a maximum
-- of the previous 24 hours of
-- operation.  The past 24 hours may be broken into 96
-- completed 15 minute intervals.
-- A system is required to store at
-- least 4 completed 15 minute interval.
-- The default value is 32 intervals.

sonetPathIntervalTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetPathIntervalEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
     "The SONET/SDH Path Interval table."
::= { sonetPath 2 }

sonetPathIntervalEntry OBJECT-TYPE
    SYNTAX  SonetPathIntervalEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
     "An entry in the SONET/SDH Path Interval table."
    INDEX   { ifIndex,
              sonetPathIntervalNumber }
::= { sonetPathIntervalTable 1 }


SonetPathIntervalEntry ::=
    SEQUENCE {
         sonetPathIntervalNumber     Integer32,
         sonetPathIntervalESs        PerfIntervalCount,
         sonetPathIntervalSESs       PerfIntervalCount,
         sonetPathIntervalCVs        PerfIntervalCount,
         sonetPathIntervalUASs       PerfIntervalCount,
         sonetPathIntervalValidData  TruthValue
    }


sonetPathIntervalNumber OBJECT-TYPE
    SYNTAX  Integer32 (1..96)
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
       "A number between 1 and 96, which identifies the
       interval for which the set of statistics is available.
       The interval identified by 1 is the most recently

       completed 15 minute interval,
       and the interval identified
       by N is the interval immediately preceding the
       one identified
       by N-1."
::= { sonetPathIntervalEntry 1 }

sonetPathIntervalESs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Errored Seconds encountered
     by a SONET/SDH Path in a
     particular 15-minute interval
     in the past 24 hours."
::= { sonetPathIntervalEntry 2 }

sonetPathIntervalSESs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Severely Errored Seconds
     encountered by a SONET/SDH Path in
     a particular 15-minute interval
     in the past 24 hours."
::= { sonetPathIntervalEntry 3 }

sonetPathIntervalCVs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of Coding
     Violations encountered by a
     SONET/SDH Path in a particular 15-minute interval
     in the past 24 hours."
::= { sonetPathIntervalEntry 4 }

sonetPathIntervalUASs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of

     Unavailable Seconds
     encountered by a Path in a
     particular 15-minute interval
     in the past 24 hours."
::= { sonetPathIntervalEntry 5 }

sonetPathIntervalValidData OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "This variable indicates if the data for this
        interval is valid."
    ::= { sonetPathIntervalEntry 6 }

-- The SONET/SDH Far End Path group

-- This group consists of two tables:
--  - SONET/SDH Far End Path Current Table
--  - SONET/SDH Far End Path Interval Table

-- The SONET/SDH Far End Path Current Table

-- The SONET/SDH Far End Path Current table
-- contains various statistics
-- being collected for the current 15 minute interval.
-- The statistics are collected from
-- the far end block error code
-- (FEBE) within the G1 byte of the Path Overhead.
-- The definitions are the same as described for
-- the near-end information.

sonetFarEndPathCurrentTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetFarEndPathCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
         "The SONET/SDH Far End Path Current table."
    ::= { sonetFarEndPath 1 }

sonetFarEndPathCurrentEntry OBJECT-TYPE
    SYNTAX  SonetFarEndPathCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
         "An entry in the SONET/SDH Far End Path Current table."
    INDEX   { ifIndex }
    ::= { sonetFarEndPathCurrentTable 1 }

SonetFarEndPathCurrentEntry ::=
    SEQUENCE {
        sonetFarEndPathCurrentESs       PerfCurrentCount,
        sonetFarEndPathCurrentSESs      PerfCurrentCount,
        sonetFarEndPathCurrentCVs       PerfCurrentCount,
        sonetFarEndPathCurrentUASs      PerfCurrentCount
    }


sonetFarEndPathCurrentESs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
         "The counter associated with the number of Far
         End Errored Seconds encountered by a SONET/SDH
         interface in the current 15 minute interval."
    ::= { sonetFarEndPathCurrentEntry 1 }

sonetFarEndPathCurrentSESs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
         "The counter associated with the number of
         Far End Severely Errored Seconds
         encountered by a SONET/SDH Path
         interface in the current 15 minute
         interval."
    ::= { sonetFarEndPathCurrentEntry 2 }

sonetFarEndPathCurrentCVs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
         "The counter associated with the number of
         Far End Coding Violations reported via
         the far end block error count
         encountered by a
         SONET/SDH Path interface in
         the current 15 minute interval."
    ::= { sonetFarEndPathCurrentEntry 3 }

sonetFarEndPathCurrentUASs OBJECT-TYPE
   SYNTAX  PerfCurrentCount
   MAX-ACCESS  read-only
   STATUS  current

   DESCRIPTION
       "The counter associated with the number of
       Far End Unavailable Seconds
       encountered by a
       SONET/SDH Path interface in
       the current 15 minute interval."
   ::= { sonetFarEndPathCurrentEntry 4 }

-- The SONET/SDH Far End Path Interval Table

-- The SONET/SDH Far End Path Interval Table
-- contains various statistics
-- collected by each system over a maximum
-- of the previous 24 hours of
-- operation.  The past 24 hours may be broken into 96
-- completed 15 minute intervals.
-- A system is required to store at
-- least 4 completed 15 minute interval.
-- The default value is 32 intervals.

sonetFarEndPathIntervalTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetFarEndPathIntervalEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
        "The SONET/SDH Far End Path Interval table."
    ::= { sonetFarEndPath 2 }

sonetFarEndPathIntervalEntry OBJECT-TYPE
    SYNTAX  SonetFarEndPathIntervalEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
       "An entry in the SONET/SDH Far
       End Path Interval table."
    INDEX   { ifIndex,
              sonetFarEndPathIntervalNumber }
    ::= { sonetFarEndPathIntervalTable 1 }

SonetFarEndPathIntervalEntry ::=
    SEQUENCE {
         sonetFarEndPathIntervalNumber     Integer32,
         sonetFarEndPathIntervalESs        PerfIntervalCount,
         sonetFarEndPathIntervalSESs       PerfIntervalCount,
         sonetFarEndPathIntervalCVs        PerfIntervalCount,
         sonetFarEndPathIntervalUASs       PerfIntervalCount,
         sonetFarEndPathIntervalValidData  TruthValue
    }

sonetFarEndPathIntervalNumber OBJECT-TYPE
   SYNTAX  Integer32 (1..96)
   MAX-ACCESS  not-accessible
   STATUS  current
   DESCRIPTION
        "A number between 1 and 96, which identifies the
        interval for which the set of statistics is available.
        The interval identified by 1 is the most recently
        completed 15 minute interval,
        and the interval identified
        by N is the interval immediately preceding the
        one identified
        by N-1."
   ::= { sonetFarEndPathIntervalEntry 1 }

sonetFarEndPathIntervalESs OBJECT-TYPE
   SYNTAX  PerfIntervalCount
   MAX-ACCESS  read-only
   STATUS  current
   DESCRIPTION
        "The counter associated with the number of
        Far End Errored Seconds encountered
        by a SONET/SDH Path interface in a
        particular 15-minute interval
        in the past 24 hours."
   ::= { sonetFarEndPathIntervalEntry 2 }

sonetFarEndPathIntervalSESs OBJECT-TYPE
   SYNTAX  PerfIntervalCount
   MAX-ACCESS  read-only
   STATUS  current
   DESCRIPTION
        "The counter associated with the number of
        Far End Severely Errored Seconds
        encountered by a SONET/SDH Path interface
        in a particular 15-minute interval
        in the past 24 hours."
   ::= { sonetFarEndPathIntervalEntry 3 }

sonetFarEndPathIntervalCVs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
         "The counter associated with the number of
         Far End Coding Violations reported via
         the far end block error count
         encountered by a

         SONET/SDH Path interface
         in a particular 15-minute interval
         in the past 24 hours."
    ::= { sonetFarEndPathIntervalEntry 4 }

sonetFarEndPathIntervalUASs OBJECT-TYPE
   SYNTAX  PerfIntervalCount
   MAX-ACCESS  read-only
   STATUS  current
   DESCRIPTION
       "The counter associated with the number of
       Far End Unavailable Seconds
       encountered by a
       SONET/SDH Path interface in
       a particular 15-minute interval
       in the past 24 hours."
   ::= { sonetFarEndPathIntervalEntry 5 }

sonetFarEndPathIntervalValidData OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "This variable indicates if the data for this
        interval is valid."
    ::= { sonetFarEndPathIntervalEntry 6 }

-- the SONET/SDH Virtual Tributary group

-- this group consists of 2 tables:
-- - the SONET/SDH VT Current Table
-- - the SONET/SDH VT Interval Table

-- For SDH signals, virtual tributaries are
-- called VCs instead of VTs

-- A VT1.5 = VC11
-- A VT2 = VC12
-- A VT3 = none
-- A VT6 = VC3


-- the SONET/SDH VT Current Table

-- The SONET/SDH VT current table
-- contains various statistics
-- being collected for the
-- current 15 minute interval.

sonetVTCurrentTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetVTCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
     "The SONET/SDH VT Current table."
::= { sonetVT 1 }

sonetVTCurrentEntry OBJECT-TYPE
    SYNTAX  SonetVTCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
     "An entry in the SONET/SDH VT Current table."
    INDEX   { ifIndex }
::= { sonetVTCurrentTable 1 }

SonetVTCurrentEntry ::=
    SEQUENCE {
        sonetVTCurrentWidth      INTEGER,
        sonetVTCurrentStatus     Integer32,
        sonetVTCurrentESs        PerfCurrentCount,
        sonetVTCurrentSESs       PerfCurrentCount,
        sonetVTCurrentCVs        PerfCurrentCount,
        sonetVTCurrentUASs       PerfCurrentCount
    }

sonetVTCurrentWidth OBJECT-TYPE
    SYNTAX  INTEGER {
            vtWidth15VC11(1),
            vtWidth2VC12(2),
            vtWidth3(3),
            vtWidth6VC2(4),
            vtWidth6c(5)
         }
    MAX-ACCESS  read-write
    STATUS  current
    DESCRIPTION
    "A value that indicates the type of the SONET
     VT and SDH VC.  Assigned widths are
     VT1.5/VC11, VT2/VC12, VT3, VT6/VC2, and VT6c."
::= { sonetVTCurrentEntry 1 }

sonetVTCurrentStatus OBJECT-TYPE
    SYNTAX  Integer32 (1..126)
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION

      "This variable indicates the
      status of the interface.
      The sonetVTCurrentStatus
      is a bit map represented
      as a sum, therefore,
      it can represent multiple defects
      and failures
      simultaneously.
      The sonetVTNoDefect should be
      set if and only if
      no other flag is set.

      The various bit positions are:
         1   sonetVTNoDefect
         2   sonetVTLOP
         4   sonetVTPathAIS
         8   sonetVTPathRDI
        16   sonetVTPathRFI
        32   sonetVTUnequipped
        64   sonetVTSignalLabelMismatch"
::= { sonetVTCurrentEntry 2 }

sonetVTCurrentESs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of Errored
     Seconds encountered by a SONET/SDH
     VT in the current 15 minute interval."
::= { sonetVTCurrentEntry 3 }

sonetVTCurrentSESs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Severely Errored Seconds
     encountered by a SONET/SDH VT in the current 15 minute
     interval."
::= { sonetVTCurrentEntry 4 }

sonetVTCurrentCVs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION

     "The counter associated with the number of Coding
     Violations encountered by a
     SONET/SDH VT in the current 15 minute interval."
::= { sonetVTCurrentEntry 5 }

sonetVTCurrentUASs OBJECT-TYPE
    SYNTAX  PerfCurrentCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Unavailable Seconds
     encountered by a VT in the current
     15 minute interval."
::= { sonetVTCurrentEntry 6 }


-- the SONET/SDH VT Interval Table

-- The SONET/SDH VT Interval Table
-- contains various statistics
-- collected by each system over a maximum
-- of the previous 24 hours of
-- operation.  The past 24 hours may be broken into 96
-- completed 15 minute intervals.
-- A system is required to store at
-- least 4 completed 15 minute interval.
-- The default value is 32 intervals.

sonetVTIntervalTable OBJECT-TYPE
    SYNTAX  SEQUENCE OF SonetVTIntervalEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
     "The SONET/SDH VT Interval table."
::= { sonetVT 2 }

sonetVTIntervalEntry OBJECT-TYPE
    SYNTAX  SonetVTIntervalEntry
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
     "An entry in the SONET/SDH VT Interval table."
    INDEX   { ifIndex,
              sonetVTIntervalNumber }
::= { sonetVTIntervalTable 1 }

SonetVTIntervalEntry ::=

    SEQUENCE {
        sonetVTIntervalNumber     Integer32,
        sonetVTIntervalESs        PerfIntervalCount,
        sonetVTIntervalSESs       PerfIntervalCount,
        sonetVTIntervalCVs        PerfIntervalCount,
        sonetVTIntervalUASs       PerfIntervalCount,
        sonetVTIntervalValidData  TruthValue
    }

sonetVTIntervalNumber OBJECT-TYPE
    SYNTAX  Integer32 (1..96)
    MAX-ACCESS  not-accessible
    STATUS  current
    DESCRIPTION
      "A number between 1 and 96, which identifies the
      interval for which the set of statistics is available.
      The interval identified by 1 is the most recently
      completed 15 minute interval,
      and the interval identified
      by N is the interval immediately preceding the
      one identified
      by N-1."
::= { sonetVTIntervalEntry 1 }

sonetVTIntervalESs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Errored Seconds encountered
     by a SONET/SDH VT in a particular 15-minute interval
     in the past 24 hours."
::= { sonetVTIntervalEntry 2 }

sonetVTIntervalSESs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Severely Errored Seconds
     encountered by a SONET/SDH VT
     in a particular 15-minute interval
     in the past 24 hours."
::= { sonetVTIntervalEntry 3 }

sonetVTIntervalCVs OBJECT-TYPE

    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of Coding
     Violations encountered by a
     SONET/SDH VT in a particular 15-minute interval
     in the past 24 hours."
::= { sonetVTIntervalEntry 4 }

sonetVTIntervalUASs OBJECT-TYPE
    SYNTAX  PerfIntervalCount
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
     "The counter associated with the number of
     Unavailable Seconds
     encountered by a VT in a particular 15-minute interval
     in the past 24 hours."
::= { sonetVTIntervalEntry 5 }

sonetVTIntervalValidData OBJECT-TYPE
    SYNTAX  TruthValue
    MAX-ACCESS  read-only
    STATUS  current
    DESCRIPTION
       "This variable indicates if the data for this
        interval is valid."
    ::= { sonetVTIntervalEntry 6 }

-- The SONET/SDH Far End VT group

-- This group consists of two tables:
--    SONET/SDH Far End VT Current Table
--    SONET/SDH Far End VT Interval Table


-- The SONET/SDH Far End VT Current

-- The SONET/SDH Far End VT Current table
-- contains various statistics
-- being collected for the current 15 minute interval.
-- The statistics are collected from
-- the far end block error code
-- (FEBE) within the G1 byte of the VT Overhead.
-- The definitions are the same as described for
-- the near-end information.