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RFC 3592

Definitions of Managed Objects for the Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) Interface Type

Pages: 73
Draft Standard
Errata
Obsoletes:  2558
Part 3 of 3 – Pages 42 to 73
First   Prev   None

Top   ToC   RFC3592 - Page 42   prevText

4.6. -- 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

4.6.1. -- 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 }
Top   ToC   RFC3592 - Page 43
   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 }
Top   ToC   RFC3592 - Page 44

4.6.2. -- 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.
Top   ToC   RFC3592 - Page 45
           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 }
Top   ToC   RFC3592 - Page 46
   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 }

4.7. -- the SONET/SDH Virtual Tributary group

-- this group consists of 2 tables: -- - the SONET/SDH VT Current Table -- - the SONET/SDH VT Interval Table -- Corresponding SDH signals for SONET VTs are -- as follows: -- A VT1.5 = TU11 -- A VT2 = TU12 -- A VT3 = none -- none = TU3 -- A VT6 = TU2

4.7.1. -- the SONET/SDH VT Current Table

-- The SONET/SDH VT current table -- contains various statistics -- being collected for the -- current 15 minute interval.
Top   ToC   RFC3592 - Page 47
   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 }
Top   ToC   RFC3592 - Page 48
   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 }
Top   ToC   RFC3592 - Page 49
   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 }

4.7.2. -- 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,
Top   ToC   RFC3592 - Page 50
                 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
Top   ToC   RFC3592 - Page 51
        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 }

4.8. -- 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

4.8.1. -- 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.
Top   ToC   RFC3592 - Page 52
   -- The definitions are the same as described for
   -- the near-end information.

   sonetFarEndVTCurrentTable OBJECT-TYPE
       SYNTAX  SEQUENCE OF SonetFarEndVTCurrentEntry
       MAX-ACCESS  not-accessible
       STATUS  current
       DESCRIPTION
           "The SONET/SDH Far End VT Current table."
       ::= { sonetFarEndVT 1 }

   sonetFarEndVTCurrentEntry OBJECT-TYPE
       SYNTAX  SonetFarEndVTCurrentEntry
       MAX-ACCESS  not-accessible
       STATUS  current
       DESCRIPTION
           "An entry in the SONET/SDH Far End VT Current table."
       INDEX   { ifIndex }
       ::= { sonetFarEndVTCurrentTable 1 }

   SonetFarEndVTCurrentEntry ::=
       SEQUENCE {
           sonetFarEndVTCurrentESs       PerfCurrentCount,
           sonetFarEndVTCurrentSESs      PerfCurrentCount,
           sonetFarEndVTCurrentCVs       PerfCurrentCount,
           sonetFarEndVTCurrentUASs      PerfCurrentCount
       }

   sonetFarEndVTCurrentESs 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."
   ::= { sonetFarEndVTCurrentEntry 1 }

   sonetFarEndVTCurrentSESs 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 VT interface
           in the current 15 minute
           interval."
Top   ToC   RFC3592 - Page 53
       ::= { sonetFarEndVTCurrentEntry 2 }

   sonetFarEndVTCurrentCVs 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 VT interface
           in the current 15 minute interval."
       ::= { sonetFarEndVTCurrentEntry 3 }

   sonetFarEndVTCurrentUASs 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 VT interface
         in the current 15 minute interval."
      ::= { sonetFarEndVTCurrentEntry 4 }

4.8.2. -- The SONET/SDH Far End VT Interval Table

-- The SONET/SDH Far End 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. sonetFarEndVTIntervalTable OBJECT-TYPE SYNTAX SEQUENCE OF SonetFarEndVTIntervalEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The SONET/SDH Far End VT Interval table." ::= { sonetFarEndVT 2 }
Top   ToC   RFC3592 - Page 54
   sonetFarEndVTIntervalEntry OBJECT-TYPE
       SYNTAX  SonetFarEndVTIntervalEntry
       MAX-ACCESS  not-accessible
       STATUS  current
       DESCRIPTION
         "An entry in the SONET/SDH Far
         End VT Interval table."
       INDEX   { ifIndex,
                 sonetFarEndVTIntervalNumber }
       ::= { sonetFarEndVTIntervalTable 1 }

   SonetFarEndVTIntervalEntry ::=
      SEQUENCE {
            sonetFarEndVTIntervalNumber     Integer32,
            sonetFarEndVTIntervalESs        PerfIntervalCount,
            sonetFarEndVTIntervalSESs       PerfIntervalCount,
            sonetFarEndVTIntervalCVs        PerfIntervalCount,
            sonetFarEndVTIntervalUASs       PerfIntervalCount,
            sonetFarEndVTIntervalValidData  TruthValue
       }

   sonetFarEndVTIntervalNumber 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."
       ::= { sonetFarEndVTIntervalEntry 1 }

   sonetFarEndVTIntervalESs 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 VT interface
             in a particular 15-minute interval
             in the past 24 hours."
      ::= { sonetFarEndVTIntervalEntry 2 }
Top   ToC   RFC3592 - Page 55
   sonetFarEndVTIntervalSESs 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 VT interface
             in a particular 15-minute interval
             in the past 24 hours."
       ::= { sonetFarEndVTIntervalEntry 3 }

   sonetFarEndVTIntervalCVs 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 VT interface in a
            particular 15-minute interval
            in the past 24 hours."
       ::= { sonetFarEndVTIntervalEntry 4 }

   sonetFarEndVTIntervalUASs 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 VT interface in a
          particular 15-minute interval
          in the past 24 hours."
      ::= { sonetFarEndVTIntervalEntry 5 }

   sonetFarEndVTIntervalValidData OBJECT-TYPE
       SYNTAX  TruthValue
       MAX-ACCESS  read-only
       STATUS  current
       DESCRIPTION
          "This variable indicates if the data for this
           interval is valid."
       ::= { sonetFarEndVTIntervalEntry 6 }
Top   ToC   RFC3592 - Page 56

4.9. -- conformance information

sonetConformance OBJECT IDENTIFIER ::= { sonetMIB 4 } sonetGroups OBJECT IDENTIFIER ::= { sonetConformance 1 } sonetCompliances OBJECT IDENTIFIER ::= { sonetConformance 2 } -- deprecated compliance statement sonetCompliance MODULE-COMPLIANCE STATUS deprecated DESCRIPTION "The compliance statement for SONET/SDH interfaces." MODULE -- this module MANDATORY-GROUPS { sonetMediumStuff, sonetSectionStuff } GROUP sonetLineStuff DESCRIPTION "Implementation of this group is mandatory for all SONET/SDH systems that terminate SONET/SDH Lines, Paths or Virtual Tributaries." GROUP sonetFarEndLineStuff DESCRIPTION "Implementation of this group is optional for all SONET/SDH systems that terminate SONET/SDH Lines, Paths or Virtual Tributaries, and that provide for a far end block error (FEBE) information at the SONET/SDH Line Layer." GROUP sonetPathStuff DESCRIPTION "Implementation of this group is mandatory for all SONET/SDH systems that terminate SONET/SDH Paths or Virtual Tributaries." OBJECT sonetPathCurrentWidth MIN-ACCESS read-only DESCRIPTION "Write access is not required." GROUP sonetFarEndPathStuff DESCRIPTION "Implementation of this group is optional for all SONET/SDH systems that terminate SONET/SDH Paths or Virtual Tributaries, and that process Far End information."
Top   ToC   RFC3592 - Page 57
           GROUP       sonetVTStuff
           DESCRIPTION
               "Implementation of this group is mandatory for all
                SONET/SDH systems that terminate SONET/SDH Virtual
                Tributaries."

           OBJECT      sonetVTCurrentWidth
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           GROUP       sonetFarEndVTStuff
           DESCRIPTION
               "Implementation of this group is optional for all
                SONET/SDH systems that terminate the SONET/SDH
                floating Virtual Tributaries, and that process
                Far End information."

       ::= { sonetCompliances 1 }

4.10. -- current compliance statements

sonetCompliance2 MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for SONET/SDH interfaces." MODULE -- this module MANDATORY-GROUPS { sonetMediumStuff2, sonetSectionStuff2 } OBJECT sonetMediumType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT sonetMediumLineCoding MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT sonetMediumLineType MIN-ACCESS read-only DESCRIPTION "Write access is not required." OBJECT sonetMediumCircuitIdentifier MIN-ACCESS read-only DESCRIPTION
Top   ToC   RFC3592 - Page 58
               "Write access is not required."

           OBJECT      sonetMediumLoopbackConfig
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           OBJECT      sonetSESthresholdSet
           MIN-ACCESS  read-only
           DESCRIPTION
             "Write access is not required, and only one
             of the enumerated values need be supported."

           GROUP       sonetLineStuff2
           DESCRIPTION
               "Implementation of this group is mandatory for all
                SONET/SDH systems that terminate SONET/SDH Lines,
                Paths or Virtual Tributaries."

           GROUP       sonetFarEndLineStuff2
           DESCRIPTION
               "Implementation of this group is optional for all
                SONET/SDH systems that terminate SONET/SDH Lines,
                Paths or Virtual Tributaries, and that
                provide for a far end block error (FEBE)
                information at the SONET/SDH Line Layer."

           GROUP       sonetPathStuff2
           DESCRIPTION
               "Implementation of this group is mandatory for all
                SONET/SDH systems that terminate SONET/SDH
                Paths or Virtual Tributaries."

           OBJECT      sonetPathCurrentWidth
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           GROUP       sonetFarEndPathStuff2
           DESCRIPTION
               "Implementation of this group is optional for all
                SONET/SDH systems that terminate SONET/SDH
                Paths or Virtual Tributaries, and that process
                Far End information."

           GROUP       sonetVTStuff2
           DESCRIPTION
               "Implementation of this group is mandatory for all
Top   ToC   RFC3592 - Page 59
                SONET/SDH systems that terminate SONET/SDH Virtual
                Tributaries."

           OBJECT      sonetVTCurrentWidth
           MIN-ACCESS  read-only
           DESCRIPTION
               "Write access is not required."

           GROUP       sonetFarEndVTStuff2
           DESCRIPTION
               "Implementation of this group is optional for all
                SONET/SDH systems that terminate the SONET/SDH
                floating Virtual Tributaries, and that process
                Far End information."

       ::= { sonetCompliances 2 }

   -- units of conformance

   -- deprecated groups

   sonetMediumStuff    OBJECT-GROUP
       OBJECTS { sonetMediumType,
                 sonetMediumTimeElapsed,
                 sonetMediumValidIntervals,
                 sonetMediumLineCoding,
                 sonetMediumLineType,
                 sonetMediumCircuitIdentifier }
       STATUS  deprecated
       DESCRIPTION
               "A collection of objects providing configuration
               information applicable to all SONET/SDH interfaces."
       ::= { sonetGroups 1 }

   sonetSectionStuff    OBJECT-GROUP
       OBJECTS { sonetSectionCurrentStatus,
                 sonetSectionCurrentESs,
                 sonetSectionCurrentSESs,
                 sonetSectionCurrentSEFSs,
                 sonetSectionCurrentCVs,
                 sonetSectionIntervalESs,
                 sonetSectionIntervalSESs,
                 sonetSectionIntervalSEFSs,
                 sonetSectionIntervalCVs
    }
       STATUS  deprecated
       DESCRIPTION
               "A collection of objects providing information
Top   ToC   RFC3592 - Page 60
               specific to SONET/SDH Section interfaces."
       ::= { sonetGroups 2 }

   sonetLineStuff    OBJECT-GROUP
       OBJECTS { sonetLineCurrentStatus,
                 sonetLineCurrentESs,
                 sonetLineCurrentSESs,
                 sonetLineCurrentCVs,
                 sonetLineCurrentUASs,
                 sonetLineIntervalESs,
                 sonetLineIntervalSESs,
                 sonetLineIntervalCVs,
                 sonetLineIntervalUASs }
       STATUS  deprecated
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH Line interfaces."
       ::= { sonetGroups 3 }

   sonetFarEndLineStuff    OBJECT-GROUP
       OBJECTS { sonetFarEndLineCurrentESs,
                 sonetFarEndLineCurrentSESs,
                 sonetFarEndLineCurrentCVs,
                 sonetFarEndLineCurrentUASs,
                 sonetFarEndLineIntervalESs,
                 sonetFarEndLineIntervalSESs,
                 sonetFarEndLineIntervalCVs,
                 sonetFarEndLineIntervalUASs }
       STATUS  deprecated
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH Line interfaces,
               and maintaining Line Far End information."
       ::= { sonetGroups 4 }

   sonetPathStuff    OBJECT-GROUP
       OBJECTS { sonetPathCurrentWidth,
                 sonetPathCurrentStatus,
                 sonetPathCurrentESs,
                 sonetPathCurrentSESs,
                 sonetPathCurrentCVs,
                 sonetPathCurrentUASs,
                 sonetPathIntervalESs,
                 sonetPathIntervalSESs,
                 sonetPathIntervalCVs,
                 sonetPathIntervalUASs }
       STATUS  deprecated
       DESCRIPTION
Top   ToC   RFC3592 - Page 61
               "A collection of objects providing information
               specific to SONET/SDH Path interfaces."
       ::= { sonetGroups 5 }

   sonetFarEndPathStuff    OBJECT-GROUP
       OBJECTS { sonetFarEndPathCurrentESs,
                 sonetFarEndPathCurrentSESs,
                 sonetFarEndPathCurrentCVs,
                 sonetFarEndPathCurrentUASs,
                 sonetFarEndPathIntervalESs,
                 sonetFarEndPathIntervalSESs,
                 sonetFarEndPathIntervalCVs,
                 sonetFarEndPathIntervalUASs }
       STATUS  deprecated
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH Path interfaces,
               and maintaining Path Far End information."
       ::= { sonetGroups 6 }

   sonetVTStuff    OBJECT-GROUP
       OBJECTS { sonetVTCurrentWidth,
                 sonetVTCurrentStatus,
                 sonetVTCurrentESs,
                 sonetVTCurrentSESs,
                 sonetVTCurrentCVs,
                 sonetVTCurrentUASs,
                 sonetVTIntervalESs,
                 sonetVTIntervalSESs,
                 sonetVTIntervalCVs,
                 sonetVTIntervalUASs }
       STATUS  deprecated
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH VT interfaces."
       ::= { sonetGroups 7 }

   sonetFarEndVTStuff    OBJECT-GROUP
       OBJECTS { sonetFarEndVTCurrentESs,
                 sonetFarEndVTCurrentSESs,
                 sonetFarEndVTCurrentCVs,
                 sonetFarEndVTCurrentUASs,
                 sonetFarEndVTIntervalESs,
                 sonetFarEndVTIntervalSESs,
                 sonetFarEndVTIntervalCVs,
                 sonetFarEndVTIntervalUASs }
       STATUS  deprecated
       DESCRIPTION
Top   ToC   RFC3592 - Page 62
               "A collection of objects providing information
               specific to SONET/SDH VT interfaces,
               and maintaining VT Far End information."
       ::= { sonetGroups 8 }

   -- current groups

   sonetMediumStuff2    OBJECT-GROUP
       OBJECTS { sonetMediumType,
                 sonetMediumTimeElapsed,
                 sonetMediumValidIntervals,
                 sonetMediumLineCoding,
                 sonetMediumLineType,
                 sonetMediumCircuitIdentifier,
                 sonetMediumInvalidIntervals,
                 sonetMediumLoopbackConfig,
                 sonetSESthresholdSet }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing configuration
               information applicable to all SONET/SDH interfaces."
       ::= { sonetGroups 9 }

   sonetSectionStuff2    OBJECT-GROUP
       OBJECTS { sonetSectionCurrentStatus,
                 sonetSectionCurrentESs,
                 sonetSectionCurrentSESs,
                 sonetSectionCurrentSEFSs,
                 sonetSectionCurrentCVs,
                 sonetSectionIntervalESs,
                 sonetSectionIntervalSESs,
                 sonetSectionIntervalSEFSs,
                 sonetSectionIntervalCVs,
                 sonetSectionIntervalValidData }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH Section interfaces."
       ::= { sonetGroups 10 }

   sonetLineStuff2    OBJECT-GROUP
       OBJECTS { sonetLineCurrentStatus,
                 sonetLineCurrentESs,
                 sonetLineCurrentSESs,
                 sonetLineCurrentCVs,
                 sonetLineCurrentUASs,
                 sonetLineIntervalESs,
                 sonetLineIntervalSESs,
Top   ToC   RFC3592 - Page 63
                 sonetLineIntervalCVs,
                 sonetLineIntervalUASs,
                 sonetLineIntervalValidData }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH Line interfaces."
       ::= { sonetGroups 11 }

   sonetPathStuff2    OBJECT-GROUP
       OBJECTS { sonetPathCurrentWidth,
                 sonetPathCurrentStatus,
                 sonetPathCurrentESs,
                 sonetPathCurrentSESs,
                 sonetPathCurrentCVs,
                 sonetPathCurrentUASs,
                 sonetPathIntervalESs,
                 sonetPathIntervalSESs,
                 sonetPathIntervalCVs,
                 sonetPathIntervalUASs,
                 sonetPathIntervalValidData }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH Path interfaces."
       ::= { sonetGroups 12 }

   sonetVTStuff2    OBJECT-GROUP
       OBJECTS { sonetVTCurrentWidth,
                 sonetVTCurrentStatus,
                 sonetVTCurrentESs,
                 sonetVTCurrentSESs,
                 sonetVTCurrentCVs,
                 sonetVTCurrentUASs,
                 sonetVTIntervalESs,
                 sonetVTIntervalSESs,
                 sonetVTIntervalCVs,
                 sonetVTIntervalUASs,
                 sonetVTIntervalValidData }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH VT interfaces."
       ::= { sonetGroups 13 }

   sonetFarEndLineStuff2    OBJECT-GROUP
       OBJECTS { sonetFarEndLineCurrentESs,
                 sonetFarEndLineCurrentSESs,
Top   ToC   RFC3592 - Page 64
                 sonetFarEndLineCurrentCVs,
                 sonetFarEndLineCurrentUASs,
                 sonetFarEndLineIntervalESs,
                 sonetFarEndLineIntervalSESs,
                 sonetFarEndLineIntervalCVs,
                 sonetFarEndLineIntervalUASs,
                 sonetFarEndLineIntervalValidData }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH Line interfaces,
               and maintaining Line Far End information."
       ::= { sonetGroups 14 }

   sonetFarEndPathStuff2    OBJECT-GROUP
       OBJECTS { sonetFarEndPathCurrentESs,
                 sonetFarEndPathCurrentSESs,
                 sonetFarEndPathCurrentCVs,
                 sonetFarEndPathCurrentUASs,
                 sonetFarEndPathIntervalESs,
                 sonetFarEndPathIntervalSESs,
                 sonetFarEndPathIntervalCVs,
                 sonetFarEndPathIntervalUASs,
                 sonetFarEndPathIntervalValidData }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH Path interfaces,
               and maintaining Path Far End information."
       ::= { sonetGroups 15 }

   sonetFarEndVTStuff2    OBJECT-GROUP
       OBJECTS { sonetFarEndVTCurrentESs,
                 sonetFarEndVTCurrentSESs,
                 sonetFarEndVTCurrentCVs,
                 sonetFarEndVTCurrentUASs,
                 sonetFarEndVTIntervalESs,
                 sonetFarEndVTIntervalSESs,
                 sonetFarEndVTIntervalCVs,
                 sonetFarEndVTIntervalUASs,
                 sonetFarEndVTIntervalValidData }
       STATUS  current
       DESCRIPTION
               "A collection of objects providing information
               specific to SONET/SDH VT interfaces,
               and maintaining VT Far End information."
       ::= { sonetGroups 16 }
Top   ToC   RFC3592 - Page 65
   END

5. Acknowledgments

This specification is a product of the AToM MIB Working Group. The author would like to acknowledge Mike Heard for his many valuable contributions to this memo.

6. Security Considerations

There are a number of management objects defined in this MIB module that have a MAX-ACCESS clause of read-write: sonetMediumType, sonetMediumLineCoding, sonetMediumLineType, sonetMediumCircuitIdentifier, sonetMediumLoopbackConfig, sonetSESthresholdSet, sonetPathCurrentWidth, and sonetVTCurrentWidth. It is possible for writes to these objects to have disruptive effects on network operation that range from invalid performance data to traffic interruptions. Users of this MIB module must therefore be aware that support for SET operations in a non-secure environment without proper protection can have a negative effect on network operations. The readable objects in this MIB module (i.e., the objects with a MAX-ACCESS other than not-accessible) may be considered sensitive in some environments since, collectively, they provide extensive information about the performance of interfaces in SONET/SDH equipment or networks and can reveal some aspects of their configuration. In such environments it is important to control even GET and NOTIFY access to these objects and possibly to encrypt the values of these objects when sending them over the network via SNMP. SNMP versions prior to SNMPv3 did not include adequate security. Even if the network itself is secure (for example by using IPSec), even then, there is no control as to who on the secure network is allowed to access and GET/SET (read/change/create/delete) the objects in this MIB module. It is RECOMMENDED that implementers consider the security features as provided by the SNMPv3 framework (see [RFC3410], section 8), including full support for the SNMPv3 cryptographic mechanisms (for authentication and privacy). Further, deployment of SNMP versions prior to SNMPv3 is NOT RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to enable cryptographic security. It is then a customer/operator responsibility to ensure that the SNMP entity giving access to an
Top   ToC   RFC3592 - Page 66
   instance of this MIB module is properly configured to give access to
   the objects only to those principals (users) that have legitimate
   rights to indeed GET or SET (change/create/delete) them.

7. References

7.1. Normative References

[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirements Levels", BCP 14, RFC 2119, March 1997. [RFC2578] McCloghrie, K., Perkins, D. and J. Schoenwaelder, "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999. [RFC2579] McCloghrie, K., Perkins, D. and J. Schoenwaelder, "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999. [RFC2580] McCloghrie, K., Perkins, D. and J. Schoenwaelder, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999. [RFC3593] Tesink, K., "Textual Conventions for MIB Modules Using Performance History Based on 15 Minute Intervals", RFC 3593, September 2003. [T1.105a] American National Standard for Telecommunications - Digital Hierarchy - Optical Interface Rates and Formats Specification, ANSI T1.105-1988. [T1.105b] American National Standard for Telecommunications - Digital Hierarchy - Optical Interface Rates and Formats Specification, ANSI T1.105-1991. [T1.106] American National Standard for Telecommunications - Digital Hierarchy - Optical Interface Specification (Single-Mode), ANSI T1.106-1988. [T1M1.3] Draft American National Standard for Telecommunications - Digital Hierarchy - Layer 1 In-Service Digital Transmission Performance Monitoring, T1M1.3/93-005R2, July 1993. [G.707] CCITT Recommendation G.707, "Synchronous Digital Hierarchy Bit Rates", June 1992.
Top   ToC   RFC3592 - Page 67
   [G.708]      CCITT Recommendation G.708, "Network Node Interface for
                the Synchronous Digital Hierarchy", June 1992.

   [G.709]      CCITT Recommendation G.709, "Synchronous Multiplexing
                Structure", June 1992.

   [G.783]      CCITT Recommendation G.783, "Characteristics of
                Synchronous Digital Hierarchy (SDH) Multiplexing
                Equipment Functional Blocks", November 1992.

   [RFC1213]    McCloghrie, K. and M. Rose, "Management Information Base
                for Network Management of TCP/IP-based internets: MIB-
                II", RFC 1213, March 1991.

   [RFC2863]    McCloghrie, K. and F. Kastenholz, "The Interfaces Group
                MIB", RFC 2863, June 2000.

   [RFC2864]    McCloghrie, K. and G. Hanson, "The Inverted Stack Table
                Extension to the Interfaces Group MIB", RFC 2864, June
                2000.

   [T1.231a]    American National Standard for Telecommunications -
                Digital Hierarchy - Layer 1 In-Service Digital
                Transmission Performance Monitoring, ANSI T1.231-1993,
                September 1993.

   [TR253]      Bellcore TR-NWT-000253, Issue 1, "Synchronous Optical
                Network (SONET) Transport Systems:  Common Generic
                Criteria", December 1991.

   [G.826]      ITU Recommendation G.826, "Error Performance Parameters
                and Objectives for International Constant Bit Rate
                Digital Paths at or above Primary Rate", September 1995
                (COM 13-R57E).

   [GR253]      Bellcore GR-253-CORE, Issue 2, "Synchronous Optical
                Network (SONET) Transport Systems Common Generic
                Criteria", December 1995.

   [T1.231b]    American National Standard for Telecommunications -
                Digital Hierarchy - Layer 1 In-Service Digital
                Transmission Performance Monitoring, ANSI T1.231-1997,
                September 1997.
Top   ToC   RFC3592 - Page 68

7.2. Informative References

[RFC1595] Brown, T. and K. Tesink, "Definitions of Managed Objects for the SONET/SDH Interface Type", RFC 1595, March 1994. [RFC2495] Fowler, D., "Definitions of Managed Objects for the DS1, E1, DS2 and E2 Interface Types", RFC 2495, January 1999. [RFC2496] Fowler, D., "Definitions of Managed Objects for the DS3/E3 Interface Type", RFC 2496, January 1999. [RFC2558] Tesink, K., "Definitions of Managed Objects for the SONET/SDH Interface Type", RFC 2558, March 1999. [RFC3410] Case, J., Mundy, R., Partain, D. and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, December 2002.

8. Intellectual Property Statement

The IETF takes no position regarding the validity or scope of any intellectual property or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; neither does it represent that it has made any effort to identify any such rights. Information on the IETF's procedures with respect to rights in standards-track and standards-related documentation can be found in BCP-11. Copies of claims of rights made available for publication and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementors or users of this specification can be obtained from the IETF Secretariat. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights which may cover technology that may be required to practice this standard. Please address the information to the IETF Executive Director.
Top   ToC   RFC3592 - Page 69

Appendix A: The delay-line approach to statistics collection.

According to ANSI T1.231 unavailable time begins at the onset of 10 contiguous severely errored seconds -- that is, unavailable time starts with the first of the 10 contiguous SESs -- and while an interface is deemed unavailable all counters for that interface are frozen except for the UAS count. Since changes in the signal state lag the data to which they apply by 10 seconds, an implementation which wishes to avoid making retroactive adjustments to the counts must pass the the one-second statistics through a 10-second delay line prior to updating any counters. That can be done by performing the following steps at the end of each one second interval. i) Read near/far end line and path CV counts and alarm status flags from the hardware. ii) Accumulate the CV counts for the preceding second and compare them to the ES and SES threshold for the layer in question. Update the signal state and shift the one-second CV counts and ES/SES flags into the 10-element delay line. Note that far-end one-second statistics are to be flagged as "absent" during any second in which there is an incoming defect at the layer in question or at any lower layer. iii) Update the current interval statistics using the signal state from the previous update cycle and the one-second CV counts and ES/SES flags shifted out of the 10-element delay line. This procedure guarantees that the statistical counters will be correctly updated at all times, although they lag real time by 10 seconds. It is illustrated in the figure below. At the end of each 15 minutes interval the current interval counts are transferred to the most recent interval entry and each interval is shifted up by one position, with the oldest being discarded if necessary in order to make room. The current interval counts then start over from zero. Note, however, that the signal state calculation does not start anew at each interval boundary; rather, signal state information is retained across interval boundaries.
Top   ToC   RFC3592 - Page 70
   +--------------------------------------------------------------+
   |          READ COUNTERS & STATUS INFO FROM HARDWARE           |
   |                                                              |
   |LOS OOF/ SECT  LINE LINE LINE LINE  PATH PATH PATH PATH PATH  |
   |    LOF   CV    AIS  CV   RDI FEBE   AIS  LOP  CV   RDI  CV   |
   +--------------------------------------------------------------+
     |   |     |     |    |    |   |      |    |    |    |    |
     |   |     |     |    |    |   |      |    |    |    |    |
     V   V     V     V    V    V   V      V    V    V    V    V
   +--------------------------------------------------------------+
   | ACCUM ONE-SEC STATS, CHK ERR THRESHOLDS, & UPDT SIGNAL STATE |
   |                                                              |
   |                                                              |
   |                  NEAR END/FAR END       NEAR END/FAR END     |
   |SECT SECT SECT  LINE LINE LINE  LINE   PATH PATH PATH  PATH   |
   |CV   ES   SES    CV   ES   SES AVA/UNA  CV   ES   SES AVA/UNA |
   +--------------------------------------------------------------+
     |    |    |      |    |    |     |      |    |    |     |
     |    |    |      |    |    |     |      |    |    |     |
     V    V    V      V    V    V     |      V    V    V     |
   +-------------+  +-------------+   |    +-------------+   |
   |ONE-SEC DELAY|  |ONE-SEC DELAY|   |    |ONE-SEC DELAY|   |
   | (1 OF 10)   |  | (1 OF 10)   |   |    | (1 OF 10)   |   |
   |CV   ES   SES|  |CV   ES   SES|   |    |CV   ES   SES|   |
   +-------------+  +-------------+   |    +-------------+   |
     |    |    |      |    |    |     |      |    |    |     |
     /    /    /      /    /    /     /      /    /    /     /
     /    /    /      /    /    /     /      /    /    /     /
     |    |    |      |    |    |     |      |    |    |     |
     V    V    V      V    V    V     |      V    V    V     |
   +-------------+  +-------------+   |    +-------------+   |
   |ONE-SEC DELAY|  |ONE-SEC DELAY|   |    |ONE-SEC DELAY|   |
   | (10 OF 10)  |  | (10 OF 10)  |   |    | (10 OF 10)  |   |
   |CV   ES   SES|  |CV   ES   SES|   |    |CV   ES   SES|   |
   +-------------+  +-------------+   |    +-------------+   |
     |    |    |      |    |    |     |      |    |    |     |
     |    |    |      |    |    |     |      |    |    |     |
     V    V    V      V    V    V     V      V    V    V     V
   +--------------------------------------------------------------+
   |              UPDATE STATISTICS COUNTERS                      |
   |                                                              |
   |                   NEAR END/FAR END       NEAR END/FAR END    |
   |   SECTION               LINE                   PATH          |
   | CV ES EFS SES   CV ES EFS SES AS UAS   CV ES EFS SES AS UAS  |
   +--------------------------------------------------------------+

   Note that if such a procedure is adopted there is no current interval
   data for the first ten seconds after a system comes up.
Top   ToC   RFC3592 - Page 71
   noSuchInstance must be returned if a management station attempts to
   access the current interval counters during this time.

   It is an implementation-specific matter whether an agent assumes that
   the initial state of the interface is available or unavailable.

Appendix B: RFC 1595 SES interpretation

This appendix contains the values for x for the Section, Line, Path, and VT Layers as used in [T1M1.3][RFC1595][TR253]. Value for x for SONET/SDH Section SES Definition Rate x Minimum Bit Error Rate ======================================================= OC-1 9 1.5 x 10^-7 OC-3 16 1 x 10^-7 OC-9 47 1 x 10^-7 OC-12 63 1 x 10^-7 OC-18 94 1 x 10^-7 OC-24 125 1 x 10^-7 OC-36 187 1 x 10^-7 OC-48 249 1 x 10^-7 Value for x for SONET/SDH Line SES Definition Rate x Minimum Bit Error Rate ======================================================= OC-1 12 2 x 10^-7 OC-3 32 2 x 10^-7 OC-9 47 2 x 10^-7 OC-12 124 2 x 10^-7 OC-18 186 2 x 10^-7 OC-24 248 2 x 10^-7 OC-36 370 2 x 10^-7 OC-48 494 2 x 10^-7 Value for x for SONET/SDH STS-Path SES Definition Rate x Minimum Bit Error Rate ======================================================= STS-1 9 1.5 x 10^-7 STS-3 16 1 x 10^-7
Top   ToC   RFC3592 - Page 72
        Value for x for SONET/SDH VT-Path SES Definition

   Rate            x               Minimum Bit Error Rate
   =======================================================
   VT1.5            4                       2 x 10^-6
   VT2              6                       2 x 10^-6
   VT3              8                       2 x 10^-6
   VT6             14                       2 x 10^-6

Author's Address

Kaj Tesink Telcordia Technologies 331 Newman Springs Road P.O. Box 7020 Red Bank, NJ 07701-7020 Phone: (732) 758-5254 EMail: kaj@research.telcordia.com
Top   ToC   RFC3592 - Page 73
Full Copyright Statement

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