ROHC-MIB DEFINITIONS ::= BEGIN


  IMPORTS
      MODULE-IDENTITY, OBJECT-TYPE,
      Unsigned32, Counter32, mib-2
          FROM SNMPv2-SMI                                -- [RFC2578]

      TEXTUAL-CONVENTION, TruthValue,
      TimeInterval, DateAndTime
          FROM SNMPv2-TC                                 -- [RFC2579]

      MODULE-COMPLIANCE, OBJECT-GROUP
          FROM SNMPv2-CONF                               -- [RFC2580]

      SnmpAdminString
          FROM SNMP-FRAMEWORK-MIB                        -- [RFC3411]

      ifIndex
          FROM IF-MIB;                                   -- [RFC2863]

  rohcMIB MODULE-IDENTITY
      LAST-UPDATED "200406030000Z"  -- June 3, 2004
      ORGANIZATION "IETF Robust Header Compression Working Group"
      CONTACT-INFO
         "WG charter:
            http://www.ietf.org/html.charters/rohc-charter.html

          Mailing Lists:
            General Discussion: rohc@ietf.org
            To Subscribe: rohc-request@ietf.org
            In Body: subscribe your_email_address

          Editor:
            Juergen Quittek
            NEC Europe Ltd.
            Network Laboratories
            Kurfuersten-Anlage 36





            69221 Heidelberg
            Germany
            Tel: +49 6221 90511-15
            EMail: quittek@netlab.nec.de"
      DESCRIPTION
          "This MIB module defines a set of basic objects for
           monitoring and configuring robust header compression.
           The module covers information about running instances
           of ROHC (compressors or decompressors) at IP interfaces.

           Information about compressor contexts and decompressor
           contexts has different structure for different profiles.
           Therefore it is not provided by this MIB module, but by
           individual modules for different profiles.

           Copyright (C) The Internet Society (2004). The
           initial version of this MIB module was published
           in RFC 3816. For full legal notices see the RFC
           itself or see:
           http://www.ietf.org/copyrights/ianamib.html"

      REVISION    "200406030000Z"  -- June 3, 2004
      DESCRIPTION "Initial version, published as RFC 3816."
      ::= { mib-2 112 }

  RohcChannelIdentifier ::= TEXTUAL-CONVENTION
      DISPLAY-HINT "d"
      STATUS       current
      DESCRIPTION
          "A number identifying a channel.
           The value of 0 must not be used as identifier
           of an existing channel."
      SYNTAX       Unsigned32 (1..4294967295)

  RohcChannelIdentifierOrZero ::= TEXTUAL-CONVENTION
      DISPLAY-HINT "d"
      STATUS       current
      DESCRIPTION
          "A number identifying a channel.
           The value of 0 is indicates that
           no channel is identified."
      SYNTAX       Unsigned32 (0..4294967295)

  RohcCompressionRatio ::= TEXTUAL-CONVENTION
      DISPLAY-HINT "d"
      STATUS       current
      DESCRIPTION
          "A number indicating a compression ratio over





           a set of bytes.  The value is defined as
           1000 * bytes(compressed) / bytes(original)
           rounded to the next integer value.

           Note that compressed sets of bytes can be larger
           than the corresponding uncompressed ones.
           Therefore, the number can be greater than 1000."
      SYNTAX       Unsigned32

  --
  -- The groups defined within this MIB module:
  --

  rohcObjects       OBJECT IDENTIFIER ::= { rohcMIB 1 }
  rohcConformance   OBJECT IDENTIFIER ::= { rohcMIB 2 }

  --
  -- The ROHC Instance group lists properties of ROHC
  -- instances in the rohcInstanceTable, about the channels used
  -- by the instances in the rohcChanneltable and about the profiles
  -- available at the instances in the rohcProfileTable.
  --

  rohcInstanceObjects       OBJECT IDENTIFIER ::= { rohcObjects 1 }

  --
  -- Channel Table
  --
  -- Listing all channels used for ROHC data channel
  -- and/or as feedback channel.
  --

  rohcChannelTable OBJECT-TYPE
      SYNTAX      SEQUENCE OF RohcChannelEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "This table lists and describes all ROHC channels
           per interface."
      ::= { rohcInstanceObjects 1 }

  rohcChannelEntry OBJECT-TYPE
      SYNTAX      RohcChannelEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "An entry describing a particular script.  Every script that
           is stored in non-volatile memory is required to appear in





           this script table.

           Note, that the rohcChannelID identifies the channel
           uniquely.  The ifIndex is part of the index of this table
           just in order to allow addressing channels per interface."
      INDEX { ifIndex, rohcChannelID }
      ::= { rohcChannelTable 1 }

  RohcChannelEntry ::= SEQUENCE {
      rohcChannelID               RohcChannelIdentifier,
      rohcChannelType             INTEGER,
      rohcChannelFeedbackFor      RohcChannelIdentifierOrZero,
      rohcChannelDescr            SnmpAdminString,
      rohcChannelStatus           INTEGER
  }

  rohcChannelID OBJECT-TYPE
      SYNTAX      RohcChannelIdentifier
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "The locally arbitrary, but unique identifier associated
           with this channel.  The value is REQUIRED to be unique
           per ROHC MIB implementation independent of the associated
           interface.

           The value is REQUIRED to remain constant at least from one
           re-initialization of the entity's network management system
           to the next re-initialization.  It is RECOMMENDED that the
           value persist across such re-initializations."
      REFERENCE
          "RFC 3095, Section 5.1.1"
      ::= { rohcChannelEntry 2 }

  rohcChannelType OBJECT-TYPE
      SYNTAX      INTEGER {
                      notInUse(1),
                      rohc(2),
                      dedicatedFeedback(3)
                  }
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "Type of usage of the channel.  A channel might be currently
           not in use for ROHC or feedback, it might be in use as
           a ROHC channel carrying packets and optional piggy-backed
           feedback, or it might be used as a dedicated feedback
           channel exclusively carrying feedback."





      ::= { rohcChannelEntry 3 }

  rohcChannelFeedbackFor OBJECT-TYPE
      SYNTAX      RohcChannelIdentifierOrZero
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The index of another channel of this interface for which
           the channel serves as feedback channel.

           If no feedback information is transferred on this channel,
           then the value of this ID is 0.  If the channel type is set
           to notInUse(1), then the value of this object must be 0.
           If the channel type is rohc(2) and the value of this object
           is a valid channel ID, then feedback information is
           piggy-backed on the ROHC channel.  If the channel type is
           dedicatedFeedback(3), then feedback is transferred on this
           channel and the value of this object MUST be different from
           0 and MUST identify an existing ROHC channel."
      REFERENCE
          "RFC 3095, Section 5.1.1"
      ::= { rohcChannelEntry 4 }

  rohcChannelDescr OBJECT-TYPE
      SYNTAX      SnmpAdminString
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "A textual description of the channel."
      ::= { rohcChannelEntry 5 }

  rohcChannelStatus OBJECT-TYPE
      SYNTAX      INTEGER {
                      enabled(1),
                      disabled(2)
                  }
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "Status of the channel."
      ::= { rohcChannelEntry 6 }

  --
  -- Instances of ROHC
  --
  -- This table lists properties of running instances of ROHC
  -- compressors and decompressors at the managed node.
  --






  rohcInstanceTable OBJECT-TYPE
      SYNTAX      SEQUENCE OF RohcInstanceEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "This table lists properties of running instances
           of robust header compressors and decompressors
           at IP interfaces.  It is indexed by interface number,
           the type of instance (compressor or decompressor),
           and the ID of the channel used by the instance as
           ROHC channel.

           Note that the rohcChannelID uniquely identifies an
           instance.  The ifIndex and rohcInstanceType are part
           of the index, because it simplifies accessing instances
           per interface and for addressing either compressors or
           decompressors only."
      ::= { rohcInstanceObjects 2 }

  rohcInstanceEntry OBJECT-TYPE
      SYNTAX      RohcInstanceEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "An entry describing a particular instance
           of a robust header compressor or decompressor."
      INDEX { ifIndex, rohcInstanceType, rohcChannelID }
      ::= { rohcInstanceTable 1 }

  RohcInstanceEntry ::= SEQUENCE {
      rohcInstanceType               INTEGER,
      rohcInstanceFBChannelID        RohcChannelIdentifierOrZero,
      rohcInstanceVendor             OBJECT IDENTIFIER,
      rohcInstanceVersion            SnmpAdminString,
      rohcInstanceDescr              SnmpAdminString,
      rohcInstanceClockRes           Unsigned32,
      rohcInstanceMaxCID             Unsigned32,
      rohcInstanceLargeCIDs          TruthValue,
      rohcInstanceMRRU               Unsigned32,
      rohcInstanceContextStorageTime TimeInterval,
      rohcInstanceStatus             INTEGER,
      rohcInstanceContextsTotal      Counter32,
      rohcInstanceContextsCurrent    Unsigned32,
      rohcInstancePackets            Counter32,
      rohcInstanceIRs                Counter32,
      rohcInstanceIRDYNs             Counter32,
      rohcInstanceFeedbacks          Counter32,





      rohcInstanceCompressionRatio   RohcCompressionRatio
  }

  rohcInstanceType OBJECT-TYPE
      SYNTAX      INTEGER {
                      compressor(1),
                      decompressor(2)
                  }
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "Type of the instance of ROHC. It is either a
           compressor instance or a decompressor instance."
      ::= { rohcInstanceEntry 2 }

  rohcInstanceFBChannelID OBJECT-TYPE
      SYNTAX      RohcChannelIdentifierOrZero
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "Identifier of the channel used for feedback.
           If no feedback channel is used, the value of
           this object is 0 ."
      REFERENCE
          "RFC 3095, Section 5.1.1"
      ::= { rohcInstanceEntry 4 }

  rohcInstanceVendor OBJECT-TYPE
      SYNTAX      OBJECT IDENTIFIER
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "An object identifier that identifies the vendor who
           provides the implementation of robust header description.
           This object identifier SHALL point to the object identifier
           directly below the enterprise object identifier
           {1 3 6 1 4 1} allocated for the vendor.  The value must be
           the object identifier {0 0} if the vendor is not known."
      ::= { rohcInstanceEntry 5 }

  rohcInstanceVersion OBJECT-TYPE
      SYNTAX      SnmpAdminString (SIZE (0..32))
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The version number of the implementation of robust header
           compression.  The zero-length string shall be used if the
           implementation does not have a version number.






           It is suggested that the version number consist of one or
           more decimal numbers separated by dots, where the first
           number is called the major version number."
      ::= { rohcInstanceEntry 6 }

  rohcInstanceDescr OBJECT-TYPE
      SYNTAX      SnmpAdminString
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "A textual description of the implementation."
      ::= { rohcInstanceEntry 7 }

  rohcInstanceClockRes OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "This object indicates the system clock resolution in
           units of milliseconds.  A zero (0) value means that there
           is no clock available."
      ::= { rohcInstanceEntry 8 }

  rohcInstanceMaxCID OBJECT-TYPE
      SYNTAX      Unsigned32 (1..16383)
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The highest context ID number to be used by the
           compressor.  Note that this parameter is not coupled to,
           but in effect further constrained by,
           rohcChannelLargeCIDs."
      REFERENCE
          "RFC 3095, Section 5.1.1"
      ::= { rohcInstanceEntry 9 }

  rohcInstanceLargeCIDs OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "When retrieved, this boolean object returns false if
           the short CID representation (0 bytes or 1 prefix byte,
           covering CID 0 to 15) is used; it returns true, if the
           embedded CID representation (1 or 2 embedded CID bytes
           covering CID 0 to 16383) is used."





      REFERENCE
          "RFC 3095, Section 5.1.1"
      ::= { rohcInstanceEntry 10 }

  rohcInstanceMRRU OBJECT-TYPE
      SYNTAX      Unsigned32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "Maximum reconstructed reception unit.  This is the
           size of the largest reconstructed unit in octets that
           the decompressor is expected to reassemble from
           segments (see RFC 3095, Section 5.2.5).  Note that this
           size includes the CRC.  If MRRU is negotiated to be 0,
           no segment headers are allowed on the channel."
      REFERENCE
          "RFC 3095, Section 5.1.1"
      ::= { rohcInstanceEntry 11 }

  rohcInstanceContextStorageTime OBJECT-TYPE
      SYNTAX      TimeInterval
      UNITS       "centi-seconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
          "This object indicates the default maximum amount of time
           information on a context belonging to this instance is kept
           as entry in the rohcContextTable after the context is
           expired or terminated.  The value of this object is used
           to initialize rohcContexStorageTime object when a new
           context is created.
           Changing the value of an rohcInstanceContextStorageTime
           instance does not affect any entry of the rohcContextTable
           created previously.
           ROHC-MIB implementations SHOULD store the set value of this
           object persistently."
      DEFVAL { 360000 }
      ::= { rohcInstanceEntry 12 }

  rohcInstanceStatus OBJECT-TYPE
      SYNTAX      INTEGER {
                      enabled(1),
                      disabled(2)
                  }
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "Status of the instance of ROHC."





      ::= { rohcInstanceEntry 13 }

  rohcInstanceContextsTotal OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "Counter of all contexts created by this instance.

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the
           value of ifCounterDiscontinuityTime."
      ::= { rohcInstanceEntry 14 }

  rohcInstanceContextsCurrent OBJECT-TYPE
      SYNTAX      Unsigned32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "Number of currently active contexts created by this
           instance."
      ::= { rohcInstanceEntry 15 }

  rohcInstancePackets OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "Counter of all packets passing this instance.

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the
           value of ifCounterDiscontinuityTime."
      ::= { rohcInstanceEntry 16 }

  rohcInstanceIRs OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The number of all IR packets that are either sent
           or received by this instance.

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the





           value of ifCounterDiscontinuityTime."
      REFERENCE
          "RFC 3095, Section 5.7.7.1"
      ::= { rohcInstanceEntry 17 }

  rohcInstanceIRDYNs OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The number of all IR-DYN packets that are either sent
           or received by this instance.

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the
           value of ifCounterDiscontinuityTime."
      REFERENCE
          "RFC 3095, Section 5.7.7.2"
      ::= { rohcInstanceEntry 18 }

  rohcInstanceFeedbacks OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The number of all feedbacks that are either sent
           or received by this instance.

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the
           value of ifCounterDiscontinuityTime."
      ::= { rohcInstanceEntry 19 }

  rohcInstanceCompressionRatio OBJECT-TYPE
      SYNTAX      RohcCompressionRatio
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "This object indicates the compression ratio so far over all
           packets on the channel served by this instance.  The
           compression is computed over all bytes of the IP packets
           including the IP header but excluding all lower layer
           headers."
      ::= { rohcInstanceEntry 20 }

  --





  -- Profile Table
  --

  rohcProfileTable OBJECT-TYPE
      SYNTAX      SEQUENCE OF RohcProfileEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "This table lists a set of profiles supported by the
           instance."
      REFERENCE
          "RFC 3095, Section 5.1.1"
      ::= { rohcInstanceObjects 3 }

  rohcProfileEntry OBJECT-TYPE
      SYNTAX      RohcProfileEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "An entry describing a particular profile supported by
           the instance.  It is indexed by the rohcChannelID
           identifying the instance and by the rohcProfile."
      INDEX { rohcChannelID, rohcProfile }
      ::= { rohcProfileTable 1 }

  RohcProfileEntry ::= SEQUENCE {
      rohcProfile            Unsigned32,
      rohcProfileVendor      OBJECT IDENTIFIER,
      rohcProfileVersion     SnmpAdminString,
      rohcProfileDescr       SnmpAdminString,
      rohcProfileNegotiated  TruthValue
  }

  rohcProfile OBJECT-TYPE
      SYNTAX      Unsigned32 (0..65535)
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "Identifier of a profile supported.  For a listing of
           possible profile values, see the IANA registry for
           'RObust Header Compression (ROHC) Profile Identifiers'
           at http://www.iana.org/assignments/rohc-pro-ids"
      ::= { rohcProfileEntry 2 }

  rohcProfileVendor OBJECT-TYPE
      SYNTAX      OBJECT IDENTIFIER
      MAX-ACCESS  read-only
      STATUS      current





      DESCRIPTION
          "An object identifier that identifies the vendor who
           provides the implementation of robust header description.
           This object identifier SHALL point to the object identifier
           directly below the enterprise object identifier
           {1 3 6 1 4 1} allocated for the vendor.  The value must be
           the object identifier {0 0} if the vendor is not known."
      ::= { rohcProfileEntry 3 }

  rohcProfileVersion OBJECT-TYPE
      SYNTAX      SnmpAdminString (SIZE (0..32))
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The version number of the implementation of robust header
           compression.  The zero-length string shall be used if the
           implementation does not have a version number.

           It is suggested that the version number consist of one or
           more decimal numbers separated by dots, where the first
           number is called the major version number."
      ::= { rohcProfileEntry 4 }

  rohcProfileDescr OBJECT-TYPE
      SYNTAX      SnmpAdminString
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "A textual description of the implementation."
      ::= { rohcProfileEntry 5 }

  rohcProfileNegotiated OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "When retrieved, this boolean object returns true
           if the profile has been negotiated to be used at
           the instance, i.e., is supported also be the
           corresponding compressor/decompressor."
      ::= { rohcProfileEntry 6 }

  --
  -- Context Table
  --

  rohcContextTable OBJECT-TYPE
      SYNTAX      SEQUENCE OF RohcContextEntry





      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "This table lists and describes all compressor contexts
           per instance."
      ::= { rohcObjects 2 }

  rohcContextEntry OBJECT-TYPE
      SYNTAX      RohcContextEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "An entry describing a particular compressor context."
      INDEX {
          rohcChannelID,
          rohcContextCID
      }
      ::= { rohcContextTable 1 }

  RohcContextEntry ::= SEQUENCE {
      rohcContextCID                  Unsigned32,
      rohcContextCIDState             INTEGER,
      rohcContextProfile              Unsigned32,
      rohcContextDecompressorDepth    Unsigned32,
      rohcContextStorageTime          TimeInterval,
      rohcContextActivationTime       DateAndTime,
      rohcContextDeactivationTime     DateAndTime,
      rohcContextPackets              Counter32,
      rohcContextIRs                  Counter32,
      rohcContextIRDYNs               Counter32,
      rohcContextFeedbacks            Counter32,
      rohcContextDecompressorFailures Counter32,
      rohcContextDecompressorRepairs  Counter32,
      rohcContextAllPacketsRatio      RohcCompressionRatio,
      rohcContextAllHeadersRatio      RohcCompressionRatio,
      rohcContextAllPacketsMeanSize   Unsigned32,
      rohcContextAllHeadersMeanSize   Unsigned32,
      rohcContextLastPacketsRatio     RohcCompressionRatio,
      rohcContextLastHeadersRatio     RohcCompressionRatio,
      rohcContextLastPacketsMeanSize  Unsigned32,
      rohcContextLastHeadersMeanSize  Unsigned32
  }

  rohcContextCID OBJECT-TYPE
      SYNTAX      Unsigned32 (0..16383)
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION





          "The context identifier (CID) of this context."
      REFERENCE
          "RFC 3095, Sections 5.1.1 and 5.1.3"
      ::= { rohcContextEntry 2 }

  rohcContextCIDState OBJECT-TYPE
      SYNTAX      INTEGER {
                      unused(1),
                      active(2),
                      expired(3),
                      terminated(4)
                  }
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "State of the CID.  When a CID is assigned to a context,
           its state changes from `unused' to `active'.  The active
           context may stop operation due to some explicit
           signalling or after observing no packet for some specified
           time.  In the first case then the CID state changes to
           `terminated', in the latter case it changes to `expired'.
           If the CID is re-used again for another context, the
           state changes back to `active'."
      ::= { rohcContextEntry 3 }

  rohcContextProfile OBJECT-TYPE
      SYNTAX      Unsigned32 (0..65535)
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "Identifier of the profile for this context.
           The profile is identified by its index in the
           rohcProfileTable for this instance.  There MUST exist a
           corresponding entry in the rohcProfileTable using the
           value of rohcContextProfile as second part of the index
           (and using the same rohcChannelID as first part of the
           index)."
      ::= { rohcContextEntry 4 }

  rohcContextDecompressorDepth OBJECT-TYPE
      SYNTAX      Unsigned32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "This object indicates whether reverse decompression, for
           example as described in RFC 3095, Section 6.1, is used
           on this channel or not, and if used, to what extent.






           Its value is only valid for decompressor contexts, i.e.,
           if rohcInstanceType has the value decompressor(2).  For
           compressor contexts where rohcInstanceType has the value
           compressor(1), the value of this object is irrelevant
           and MUST be set to zero (0).

           The value of the reverse decompression depth indicates
           the maximum number of packets that are buffered, and thus
           possibly be reverse decompressed by the decompressor.
           A zero (0) value means that reverse decompression is not
           used."
      ::= { rohcContextEntry 5 }

  rohcContextStorageTime OBJECT-TYPE
      SYNTAX      TimeInterval
      UNITS       "centi-seconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
          "The value of this object specifies how long this row
           can exist in the rohcContextTable after the
           rohcContextCIDState switched to expired(3) or
           terminated(4).  This object returns  the remaining time
           that the row may exist before it is aged out.  The object
           is initialized with the value of the  associated
           rohcContextStorageTime object.  After expiration or
           termination of the context, the value of this object ticks
           backwards.  The entry in the rohcContextTable is destroyed
           when the value reaches 0.

           The value of this object may be set in order to increase or
           reduce the remaining time that the row may exist.  Setting
           the value to 0 will destroy this entry as soon as the
           rochContextCIDState has the value expired(3) or
           terminated(4).

           Note that there is no guarantee that the row is stored as
           long as this object indicates.  In case of limited CID
           space, the instance may re-use a CID before the storage
           time of the corresponding row in rohcContextTable reaches
           the value of 0.  In this case the information stored in this
           row is not anymore available."
      ::= { rohcContextEntry 6 }

  rohcContextActivationTime OBJECT-TYPE
      SYNTAX      DateAndTime
      MAX-ACCESS  read-only
      STATUS      current





      DESCRIPTION
          "The date and time when the context started to be able to
           compress packets or decompress packets, respectively.
           The value '0000000000000000'H is returned if the context
           has not been activated yet."
      DEFVAL { '0000000000000000'H }
      ::= { rohcContextEntry 7 }

  rohcContextDeactivationTime OBJECT-TYPE
      SYNTAX      DateAndTime
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The date and time when the context stopped being able to
           compress packets or decompress packets, respectively,
           because it expired or was terminated for other reasons.
           The value '0000000000000000'H is returned if the context
           has not been deactivated yet."
      DEFVAL { '0000000000000000'H }
      ::= { rohcContextEntry 8 }

  rohcContextPackets OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The number of all packets passing this context.

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the
           value of ifCounterDiscontinuityTime.  For checking
           ifCounterDiscontinuityTime, the interface index is
           required.  It can be determined by reading the
           rohcChannelTable."
      ::= { rohcContextEntry 9 }

  rohcContextIRs OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The number of all IR packets sent or received,
           respectively, by this context.

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the





           value of ifCounterDiscontinuityTime.  For checking
           ifCounterDiscontinuityTime, the interface index is
           required.  It can be determined by reading the
           rohcChannelTable."
      REFERENCE
          "RFC 3095, Section 5.7.7.1"
      ::= { rohcContextEntry 10 }

  rohcContextIRDYNs OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The number of all IR-DYN packets sent or received,
           respectively, by this context.

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the
           value of ifCounterDiscontinuityTime.  For checking
           ifCounterDiscontinuityTime, the interface index is
           required.  It can be determined by reading the
           rohcChannelTable."
      REFERENCE
          "RFC 3095, Section 5.7.7.2"
      ::= { rohcContextEntry 11 }

  rohcContextFeedbacks OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The number of all feedbacks sent or received,
           respectively, by this context.

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the
           value of ifCounterDiscontinuityTime.  For checking
           ifCounterDiscontinuityTime, the interface index is
           required.  It can be determined by reading the
           rohcChannelTable."
      ::= { rohcContextEntry 12 }

  rohcContextDecompressorFailures OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current





      DESCRIPTION
          "The number of all decompressor failures so far in this
           context. The number is only valid for decompressor
           contexts, i.e., if rohcInstanceType has the value
           decompressor(2).

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the
           value of ifCounterDiscontinuityTime.  For checking
           ifCounterDiscontinuityTime, the interface index is
           required.  It can be determined by reading the
           rohcChannelTable."
      ::= { rohcContextEntry 13 }

  rohcContextDecompressorRepairs OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "The number of all context repairs so far in this
           context.  The number is only valid for decompressor
           contexts, i.e., if rohcInstanceType has the value
           decompressor(2).

           Discontinuities in the value of this counter can
           occur at re-initialization of the management
           system, and at other times as indicated by the
           value of ifCounterDiscontinuityTime.  For checking
           ifCounterDiscontinuityTime, the interface index is
           required.  It can be determined by reading the
           rohcChannelTable."
      ::= { rohcContextEntry 14 }

  rohcContextAllPacketsRatio OBJECT-TYPE
      SYNTAX      RohcCompressionRatio
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "This object indicates the compression ratio so far over all
           packets passing this context.  The compression is computed
           over all bytes of the IP packets including the IP header
           but excluding all lower layer headers."
      ::= { rohcContextEntry 15 }

  rohcContextAllHeadersRatio OBJECT-TYPE
      SYNTAX      RohcCompressionRatio
      MAX-ACCESS  read-only





      STATUS      current
      DESCRIPTION
          "This object indicates the compression ratio so far over all
           packet headers passing this context.  The compression is
           computed over all bytes of all headers that are subject to
           compression for the used profile."
      ::= { rohcContextEntry 16 }

  rohcContextAllPacketsMeanSize OBJECT-TYPE
      SYNTAX      Unsigned32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "This object indicates the mean compressed packet size
           of all packets passing this context.  The packet size
           includes the IP header and payload but excludes all lower
           layer headers.  The mean value is given in byte rounded
           to the next integer value."
      ::= { rohcContextEntry 17 }

  rohcContextAllHeadersMeanSize OBJECT-TYPE
      SYNTAX      Unsigned32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "This object indicates the mean compressed packet header size
           of all packets passing this context.  The packet header size
           is the sum of the size of all headers of a packet that are
           subject to compression for the used profile.  The mean value
           is given in byte rounded to the next integer value."
      ::= { rohcContextEntry 18 }

  rohcContextLastPacketsRatio OBJECT-TYPE
      SYNTAX      RohcCompressionRatio
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "This object indicates the compression ratio
           concerning the last 16 packets passing this context
           or concerning all packets passing this context
           if they are less than 16, so far.  The compression is
           computed over all bytes of the IP packets including the IP
           header but excluding all lower layer headers."
      ::= { rohcContextEntry 19 }

  rohcContextLastHeadersRatio OBJECT-TYPE
      SYNTAX      RohcCompressionRatio
      MAX-ACCESS  read-only





      STATUS      current
      DESCRIPTION
          "This object indicates the compression ratio concerning the
           headers of the last 16 packets passing this context or
           concerning the headers of all packets passing this context
           if they are less than 16, so far.  The compression is
           computed over all bytes of all headers that are subject to
           compression for the used profile."
      ::= { rohcContextEntry 20 }

  rohcContextLastPacketsMeanSize OBJECT-TYPE
      SYNTAX      Unsigned32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "This object indicates the mean compressed packet size
           concerning the last 16 packets passing this context or
           concerning all packets passing this context if they are
           less than 16, so far.  The packet size includes the IP
           header and payload but excludes all lower layer headers.
           The mean value is given in byte rounded to the next
           integer value."
      ::= { rohcContextEntry 21 }

  rohcContextLastHeadersMeanSize OBJECT-TYPE
      SYNTAX      Unsigned32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
          "This object indicates the mean compressed packet header size
           concerning the last 16 packets passing this context or
           concerning all packets passing this context if they are
           less than 16, so far.  The packet header size is the sum of
           the size of all headers of a packet that are subject to
           compression for the used profile.  The mean value is given
           in byte rounded to the next integer value."
      ::= { rohcContextEntry 22 }

  --
  -- conformance information
  --

  rohcCompliances OBJECT IDENTIFIER ::= { rohcConformance 1 }
  rohcGroups      OBJECT IDENTIFIER ::= { rohcConformance 2 }

  --
  -- compliance statements
  --







  rohcCompliance MODULE-COMPLIANCE
      STATUS      current
      DESCRIPTION
          "The compliance statement for SNMP entities that implement
           the ROHC-MIB.

           Note that compliance with this compliance
           statement requires compliance with the
           ifCompliance3 MODULE-COMPLIANCE statement of the
           IF-MIB (RFC2863)."
      MODULE      -- this module
      MANDATORY-GROUPS {
              rohcInstanceGroup, rohcContextGroup
      }
      GROUP   rohcStatisticsGroup
      DESCRIPTION
         "A compliant implementation does not have to implement
          the rohcStatisticsGroup."
      GROUP   rohcTimerGroup
      DESCRIPTION
         "A compliant implementation does not have to implement
          the rohcTimerGroup."
      OBJECT  rohcInstanceContextStorageTime
      MIN-ACCESS  read-only
      DESCRIPTION
          "A compliant implementation does not have to support changing
           the value of object rohcInstanceContextStorageTime."
      OBJECT  rohcContextStorageTime
      MIN-ACCESS  read-only
      DESCRIPTION
          "A compliant implementation does not have to support changing
           the value of object rohcContextStorageTime."
      GROUP   rohcContextStatisticsGroup
      DESCRIPTION
         "A compliant implementation does not have to implement
          the rohcContextStatisticsGroup."
      ::= { rohcCompliances 1 }

  rohcInstanceGroup OBJECT-GROUP
      OBJECTS {
          rohcChannelType,
          rohcChannelFeedbackFor,
          rohcChannelDescr,
          rohcChannelStatus,
          rohcInstanceFBChannelID,
          rohcInstanceVendor,





          rohcInstanceVersion,
          rohcInstanceDescr,
          rohcInstanceClockRes,
          rohcInstanceMaxCID,
          rohcInstanceLargeCIDs,
          rohcInstanceMRRU,
          rohcInstanceStatus,
          rohcProfileVendor,
          rohcProfileVersion,
          rohcProfileDescr,
          rohcProfileNegotiated
      }
      STATUS      current
      DESCRIPTION
          "A collection of objects providing information about
           ROHC instances, used channels and available profiles."
      ::= { rohcGroups 2 }

  rohcStatisticsGroup OBJECT-GROUP
      OBJECTS {
          rohcInstanceContextsTotal,
          rohcInstanceContextsCurrent,
          rohcInstancePackets,
          rohcInstanceIRs,
          rohcInstanceIRDYNs,
          rohcInstanceFeedbacks,
          rohcInstanceCompressionRatio
      }
      STATUS      current
      DESCRIPTION
          "A collection of objects providing ROHC statistics."
      ::= { rohcGroups 4 }

  rohcContextGroup OBJECT-GROUP
      OBJECTS {
          rohcContextCIDState,
          rohcContextProfile,
          rohcContextDecompressorDepth
      }
      STATUS      current
      DESCRIPTION
          "A collection of objects providing information about
           ROHC compressor contexts and decompressor contexts."
      ::= { rohcGroups 5 }

  rohcTimerGroup OBJECT-GROUP
      OBJECTS {
          rohcInstanceContextStorageTime,





          rohcContextStorageTime,
          rohcContextActivationTime,
          rohcContextDeactivationTime

      }
      STATUS      current
      DESCRIPTION
          "A collection of objects providing statistical information
           about ROHC compressor contexts and decompressor contexts."
      ::= { rohcGroups 6 }

  rohcContextStatisticsGroup OBJECT-GROUP
      OBJECTS {
          rohcContextPackets,
          rohcContextIRs,
          rohcContextIRDYNs,
          rohcContextFeedbacks,
          rohcContextDecompressorFailures,
          rohcContextDecompressorRepairs,
          rohcContextAllPacketsRatio,
          rohcContextAllHeadersRatio,
          rohcContextAllPacketsMeanSize,
          rohcContextAllHeadersMeanSize,
          rohcContextLastPacketsRatio,
          rohcContextLastHeadersRatio,
          rohcContextLastPacketsMeanSize,
          rohcContextLastHeadersMeanSize
      }
      STATUS      current
      DESCRIPTION
          "A collection of objects providing statistical information
           about ROHC compressor contexts and decompressor contexts."
      ::= { rohcGroups 7 }

  END

   
