SCTP-MIB device MIB details by RFC

SCTP-MIB file content

The SNMP protocol is used to for conveying information and commands between agents and managing entities. SNMP uses the User Datagram Protocol (UDP) as the transport protocol for passing data between managers and agents. The reasons for using UDP for SNMP are, firstly it has low overheads in comparison to TCP, which uses a 3-way hand shake for connection. Secondly, in congested networks, SNMP over TCP is a bad idea because TCP in order to maintain reliability will flood the network with retransmissions.

Management information (MIB) is represented as a collection of managed objects. These objects together form a virtual information base called MIB. An agent may implement many MIBs, but all agents must implement a particular MIB called MIB-II [16]. This standard defines variables for things such as interface statistics (interface speeds, MTU, octets sent, octets received, etc.) as well as various other things pertaining to the system itself (system location, system contact, etc.). The main goal of MIB-II is to provide general TCP/IP management information.

Use ActiveXperts Network Monitor 2024 to import vendor-specific MIB files, inclusing SCTP-MIB.

Vendor:	RFC
Mib:	SCTP-MIB  [download]  [view objects]
Tool:	ActiveXperts Network Monitor 2024 [download]    (ships with advanced SNMP/MIB tools)

-- WinAgents MIB Extraction Wizard
-- Extracted from rfc3873.txt 17.03.2005 16:20:14

SCTP-MIB DEFINITIONS ::= BEGIN

IMPORTS
  MODULE-IDENTITY, OBJECT-TYPE, Integer32, Unsigned32, Gauge32,
  Counter32, Counter64, mib-2
       FROM SNMPv2-SMI                        -- [RFC2578]
  TimeStamp, TruthValue
       FROM SNMPv2-TC                         -- [RFC2579]
  MODULE-COMPLIANCE, OBJECT-GROUP
       FROM SNMPv2-CONF                       -- [RFC2580]
  InetAddressType, InetAddress, InetPortNumber
       FROM INET-ADDRESS-MIB;                 -- [RFC3291]





sctpMIB MODULE-IDENTITY
  LAST-UPDATED "200409020000Z"       -- 2nd September 2004
  ORGANIZATION "IETF SIGTRAN Working Group"
  CONTACT-INFO
       "
        WG EMail: sigtran@ietf.org

        Web Page:
              http://www.ietf.org/html.charters/sigtran-charter.html

        Chair:     Lyndon Ong
                   Ciena Corporation
                   0480 Ridgeview Drive
                   Cupertino, CA  95014
                   USA
                   Tel:
                   Email: lyong@ciena.com

        Editors:   Maria-Carmen Belinchon
                   R&D Department
                   Ericsson Espana S. A.
                   Via de los Poblados, 13
                   28033 Madrid
                   Spain
                   Tel:   +34 91 339 3535
                   Email: Maria.C.Belinchon@ericsson.com

                   Jose-Javier Pastor-Balbas
                   R&D Department
                   Ericsson Espana S. A.
                   Via de los Poblados, 13
                   28033 Madrid
                   Spain
                   Tel:   +34 91 339 1397
            Email: J.Javier.Pastor@ericsson.com
       "
  DESCRIPTION
       "The MIB module for managing SCTP implementations.

       Copyright (C) The Internet Society (2004).  This version of
       this MIB module is part of RFC 3873; see the RFC itself for
       full legal notices. "

  REVISION "200409020000Z"       -- 2nd September 2004

  DESCRIPTION " Initial version, published as RFC 3873"

  ::= {  mib-2 104 }

-- the SCTP base variables group

sctpObjects OBJECT IDENTIFIER ::= { sctpMIB 1 }

sctpStats   OBJECT IDENTIFIER ::= { sctpObjects 1 }
sctpParams  OBJECT IDENTIFIER ::= { sctpObjects 2 }

-- STATISTICS
-- **********

-- STATE-RELATED STATISTICS

sctpCurrEstab OBJECT-TYPE
  SYNTAX         Gauge32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of associations for which the current state is
       either ESTABLISHED, SHUTDOWN-RECEIVED or SHUTDOWN-PENDING."
  REFERENCE
       "Section 4 in RFC2960 covers the SCTP   Association state
       diagram."

  ::= { sctpStats 1 }


sctpActiveEstabs OBJECT-TYPE
  SYNTAX         Counter32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of times that associations have made a direct
       transition to the ESTABLISHED state from the COOKIE-ECHOED
       state: COOKIE-ECHOED -> ESTABLISHED. The upper layer initiated
       the association attempt."
  REFERENCE
       "Section 4 in RFC2960 covers the SCTP   Association state
       diagram."

  ::= { sctpStats  2 }









sctpPassiveEstabs OBJECT-TYPE
  SYNTAX         Counter32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of times that associations have made a direct
       transition to the ESTABLISHED state from the CLOSED state:
       CLOSED -> ESTABLISHED. The remote endpoint initiated the
       association attempt."
  REFERENCE
       "Section 4 in RFC2960 covers the SCTP   Association state
       diagram."

  ::= { sctpStats  3 }


sctpAborteds OBJECT-TYPE
  SYNTAX         Counter32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of times that associations have made a direct
       transition to the CLOSED state from any state using the
       primitive 'ABORT': AnyState --Abort--> CLOSED. Ungraceful
       termination of the association."
  REFERENCE
       "Section 4 in RFC2960 covers the SCTP   Association state
       diagram."

  ::= { sctpStats  4 }


sctpShutdowns OBJECT-TYPE
  SYNTAX         Counter32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of times that associations have made a direct
       transition to the CLOSED state from either the SHUTDOWN-SENT
       state or the SHUTDOWN-ACK-SENT state. Graceful termination of
       the association."
  REFERENCE
       "Section 4 in RFC2960 covers the SCTP   Association state
       diagram."

  ::= { sctpStats  5 }



-- OTHER LAYER STATISTICS

sctpOutOfBlues OBJECT-TYPE
  SYNTAX         Counter32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of out of the blue packets received by the host.
       An out of the blue packet is an SCTP packet correctly formed,
       including the proper checksum, but for which the receiver was
       unable to identify an appropriate association."
  REFERENCE
       "Section 8.4 in RFC2960 deals with the Out-Of-The-Blue
        (OOTB) packet definition and procedures."

  ::= { sctpStats  6 }

sctpChecksumErrors OBJECT-TYPE
  SYNTAX         Counter32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of SCTP packets received with an invalid
       checksum."
  REFERENCE
       "The checksum is located at the end of the SCTP packet as per
       Section 3.1 in RFC2960. RFC3309 updates SCTP to use a 32 bit
       CRC checksum."

::= { sctpStats  7 }

sctpOutCtrlChunks OBJECT-TYPE
  SYNTAX         Counter64
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of SCTP control chunks sent (retransmissions are
       not included). Control chunks are those chunks different from
       DATA."
  REFERENCE
       "Sections 1.3.5 and 1.4 in RFC2960 refer to control chunk as
       those chunks different from those that contain user
       information, i.e., DATA chunks."

  ::= { sctpStats  8 }




sctpOutOrderChunks OBJECT-TYPE
  SYNTAX         Counter64
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of SCTP ordered data chunks sent (retransmissions
       are not included)."
  REFERENCE
       "Section 3.3.1 in RFC2960 defines the ordered data chunk."

  ::= { sctpStats  9 }

sctpOutUnorderChunks OBJECT-TYPE
  SYNTAX         Counter64
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of SCTP unordered chunks (data chunks in which the
       U bit is set to 1) sent (retransmissions are not included)."
  REFERENCE
       "Section 3.3.1 in RFC2960 defines the unordered data chunk."

  ::= { sctpStats  10 }

sctpInCtrlChunks OBJECT-TYPE
  SYNTAX         Counter64
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of SCTP control chunks received (no duplicate
       chunks included)."
  REFERENCE
       "Sections 1.3.5 and 1.4 in RFC2960 refer to control chunk as
       those chunks different from those that contain user
       information, i.e., DATA chunks."

  ::= { sctpStats  11 }


sctpInOrderChunks OBJECT-TYPE
  SYNTAX         Counter64
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of SCTP ordered data chunks received (no duplicate
       chunks included)."



  REFERENCE
       "Section 3.3.1 in RFC2960 defines the ordered data chunk."

  ::= { sctpStats  12 }


sctpInUnorderChunks OBJECT-TYPE
  SYNTAX         Counter64
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of SCTP unordered chunks (data chunks in which the
       U bit is set to 1) received (no duplicate chunks included)."
  REFERENCE
       "Section 3.3.1 in RFC2960 defines the unordered data chunk."

  ::= { sctpStats  13 }



sctpFragUsrMsgs OBJECT-TYPE
  SYNTAX         Counter64
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION

       "The number of user messages that have to be fragmented
       because of the MTU."

  ::= { sctpStats  14 }


sctpReasmUsrMsgs OBJECT-TYPE
  SYNTAX         Counter64
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of user messages reassembled, after conversion
       into DATA chunks."
  REFERENCE
       "Section 6.9 in RFC2960 includes a description of the
       reassembly process."

  ::= { sctpStats  15 }





sctpOutSCTPPacks OBJECT-TYPE
  SYNTAX         Counter64
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of SCTP packets sent. Retransmitted DATA chunks
       are included."

  ::= { sctpStats  16 }


sctpInSCTPPacks OBJECT-TYPE
  SYNTAX         Counter64
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The number of SCTP packets received. Duplicates are
       included."

  ::= { sctpStats  17 }

sctpDiscontinuityTime OBJECT-TYPE
  SYNTAX         TimeStamp
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The value of sysUpTime on the most recent occasion at which
       any one or more of this general statistics counters suffered a
       discontinuity.  The relevant counters are the specific
       instances associated with this interface of any Counter32 or
       Counter64 object contained in the SCTP layer statistics
       (defined below sctpStats branch).  If no such discontinuities
       have occurred since the last re-initialization of the local
       management subsystem, then this object contains a zero value."
  REFERENCE
       "The inclusion of this object is recommended by RFC2578."

  ::= { sctpStats 18 }


-- PROTOCOL GENERAL VARIABLES
-- **************************

sctpRtoAlgorithm OBJECT-TYPE
  SYNTAX         INTEGER {
                      other(1),      -- Other new one. Future use
                      vanj(2)        -- Van Jacobson's algorithm
                 }

  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The algorithm used to determine the timeout value (T3-rtx)
       used for re-transmitting unacknowledged chunks."
  REFERENCE
       "Section 6.3.1 and 6.3.2 in RFC2960 cover the RTO calculation
       and retransmission timer rules."
  DEFVAL {vanj} -- vanj(2)


  ::= { sctpParams 1 }


sctpRtoMin OBJECT-TYPE
  SYNTAX         Unsigned32
  UNITS          "milliseconds"
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The minimum value permitted by a SCTP implementation for the
       retransmission timeout value, measured in milliseconds.  More
       refined semantics for objects of this type depend upon the
       algorithm used to determine the retransmission timeout value.

       A retransmission time value of zero means immediate
       retransmission.

       The value of this object has to be lower than or equal to
       stcpRtoMax's value."
  DEFVAL {1000} -- milliseconds


  ::= { sctpParams 2 }

sctpRtoMax OBJECT-TYPE
  SYNTAX         Unsigned32
  UNITS          "milliseconds"
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The maximum value permitted by a SCTP implementation for the
       retransmission timeout value, measured in milliseconds.  More
       refined semantics for objects of this type depend upon the
       algorithm used to determine the retransmission timeout value.

       A retransmission time value of zero means immediate re-
       transmission.



       The value of this object has to be greater than or equal to
       stcpRtoMin's value."
  DEFVAL {60000} -- milliseconds


    ::= { sctpParams 3 }


sctpRtoInitial OBJECT-TYPE
  SYNTAX         Unsigned32
  UNITS          "milliseconds"
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The initial value for the retransmission timer.

       A retransmission time value of zero means immediate re-
       transmission."
  DEFVAL {3000} -- milliseconds


  ::= { sctpParams 4 }


sctpMaxAssocs OBJECT-TYPE
  SYNTAX         Integer32 (-1 | 0..2147483647)
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The limit on the total number of associations the entity can
       support. In entities where the maximum number of associations
       is dynamic, this object should contain the value -1."

  ::= { sctpParams 5 }


sctpValCookieLife OBJECT-TYPE
  SYNTAX         Unsigned32
  UNITS          "milliseconds"

  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "Valid cookie life in the 4-way start-up handshake procedure."
  REFERENCE
       "Section 5.1.3 in RFC2960 explains the cookie generation
       process. Recommended value is per section 14 in RFC2960."
  DEFVAL {60000} -- milliseconds


  ::= { sctpParams 6 }

sctpMaxInitRetr OBJECT-TYPE
  SYNTAX         Unsigned32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The maximum number of retransmissions at the start-up phase
       (INIT and COOKIE ECHO chunks). "
  REFERENCE
       "Section 5.1.4, 5.1.6 in RFC2960 refers to Max.Init.Retransmit
       parameter. Recommended value is per section 14 in RFC2960."
  DEFVAL {8} -- number of attempts


  ::= { sctpParams 7 }


-- TABLES
-- ******

-- the SCTP Association TABLE

-- The SCTP association table contains information about each
-- association in which the local endpoint is involved.


sctpAssocTable OBJECT-TYPE
  SYNTAX         SEQUENCE OF SctpAssocEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "A table containing SCTP association-specific information."

  ::= { sctpObjects 3 }


sctpAssocEntry OBJECT-TYPE
  SYNTAX         SctpAssocEntry
  MAX-ACCESS     not-accessible

  STATUS         current
  DESCRIPTION
       "General common variables and statistics for the whole
       association."
  INDEX          { sctpAssocId }

  ::= { sctpAssocTable 1 }




SctpAssocEntry ::= SEQUENCE {
  sctpAssocId                        Unsigned32,
  sctpAssocRemHostName               OCTET STRING,
  sctpAssocLocalPort                 InetPortNumber,
  sctpAssocRemPort                   InetPortNumber,
  sctpAssocRemPrimAddrType           InetAddressType,
  sctpAssocRemPrimAddr               InetAddress,
  sctpAssocHeartBeatInterval         Unsigned32,
  sctpAssocState                     INTEGER,
  sctpAssocInStreams                 Unsigned32,
  sctpAssocOutStreams                Unsigned32,
  sctpAssocMaxRetr                   Unsigned32,
  sctpAssocPrimProcess               Unsigned32,
  sctpAssocT1expireds                Counter32,     -- Statistic
  sctpAssocT2expireds                Counter32,     -- Statistic
  sctpAssocRtxChunks                 Counter32,     -- Statistic
  sctpAssocStartTime                 TimeStamp,
  sctpAssocDiscontinuityTime         TimeStamp
  }


sctpAssocId OBJECT-TYPE
  SYNTAX         Unsigned32 (1..4294967295)
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "Association Identification. Value identifying the
       association. "

  ::= { sctpAssocEntry 1 }


sctpAssocRemHostName OBJECT-TYPE
  SYNTAX         OCTET STRING (SIZE(0..255))
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The peer's DNS name. This object needs to have the same
       format as the encoding in the DNS protocol.  This implies that
       the domain name can be up to 255 octets long, each octet being
       0<=x<=255 as value with US-ASCII A-Z having a case insensitive
       matching.

       If no DNS domain name was received from the peer at init time
       (embedded in the INIT or INIT-ACK chunk), this object is
       meaningless. In such cases the object MUST contain a zero-
       length string value. Otherwise, it contains the remote host
       name received at init time."

  ::= { sctpAssocEntry 2 }


sctpAssocLocalPort OBJECT-TYPE
  SYNTAX         InetPortNumber (1..65535)
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The local SCTP port number used for this association."

  ::= { sctpAssocEntry 3 }


sctpAssocRemPort OBJECT-TYPE
  SYNTAX         InetPortNumber (1..65535)
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The remote SCTP port number used for this association."

  ::= { sctpAssocEntry 4 }


sctpAssocRemPrimAddrType OBJECT-TYPE
  SYNTAX         InetAddressType
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The internet type of primary remote IP address. "

  ::= { sctpAssocEntry 5 }

sctpAssocRemPrimAddr OBJECT-TYPE
  SYNTAX         InetAddress
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The primary remote IP address. The type of this address is
       determined by the value of sctpAssocRemPrimAddrType.

       The client side will know this value after INIT_ACK message
       reception, the server side will know this value when sending
       INIT_ACK message. However, values will be filled in at
       established(4) state."

  ::= { sctpAssocEntry 6 }



sctpAssocHeartBeatInterval OBJECT-TYPE
  SYNTAX         Unsigned32
  UNITS          "milliseconds"
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The current heartbeat interval..

       Zero value means no HeartBeat, even when the concerned
       sctpAssocRemAddrHBFlag object is true."
  DEFVAL {30000} -- milliseconds


  ::= { sctpAssocEntry 7 }


sctpAssocState OBJECT-TYPE
  SYNTAX         INTEGER {
                      closed(1),
                      cookieWait(2),
                      cookieEchoed(3),
                      established(4),
                      shutdownPending(5),
                      shutdownSent(6),
                      shutdownReceived(7),
                      shutdownAckSent(8),
                      deleteTCB(9)
                      }
  MAX-ACCESS     read-write
  STATUS         current
  DESCRIPTION
       "The state of this SCTP association.

       As in TCP, deleteTCB(9) is the only value that may be set by a
       management station. If any other value is received, then the
       agent must return a wrongValue error.

       If a management station sets this object to the value
       deleteTCB(9), then this has the effect of deleting the TCB (as
       defined in SCTP) of the corresponding association on the
       managed node, resulting in immediate termination of the
       association.

       As an implementation-specific option, an ABORT chunk may be
       sent from the managed node to the other SCTP endpoint as a
       result of setting the deleteTCB(9) value. The ABORT chunk
       implies an ungraceful association shutdown."



  REFERENCE

       "Section 4 in RFC2960 covers the SCTP Association state
       diagram."

  ::= { sctpAssocEntry 8 }


sctpAssocInStreams OBJECT-TYPE
  SYNTAX         Unsigned32 (1..65535)
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "Inbound Streams according to the negotiation at association
       start up."
  REFERENCE
       "Section 1.3 in RFC2960 includes a definition of stream.
       Section 5.1.1 in RFC2960 covers the streams negotiation
       process."

  ::= { sctpAssocEntry 9 }

sctpAssocOutStreams OBJECT-TYPE
  SYNTAX         Unsigned32 (1..65535)
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "Outbound Streams according to the negotiation at association
       start up. "
  REFERENCE
       "Section 1.3 in RFC2960 includes a definition of stream.
       Section 5.1.1 in RFC2960 covers the streams negotiation
       process."

  ::= { sctpAssocEntry 10 }


sctpAssocMaxRetr OBJECT-TYPE
  SYNTAX         Unsigned32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The maximum number of data retransmissions in the association
       context. This value is specific for each association and the
       upper layer can change it by calling the appropriate
       primitives. This value has to be smaller than the addition of
       all the maximum number for all the paths
       (sctpAssocRemAddrMaxPathRtx).

       A value of zero value means no retransmissions."
  DEFVAL {10} -- number of attempts


  ::= { sctpAssocEntry 11 }

sctpAssocPrimProcess OBJECT-TYPE
      SYNTAX      Unsigned32
      MAX-ACCESS read-only
      STATUS      current
      DESCRIPTION
       "This object identifies the system level process which holds
       primary responsibility for the SCTP association.
       Wherever possible, this should be the system's native unique
       identification number. The special value 0 can be used to
       indicate that no primary process is known.

       Note that the value of this object can be used as a pointer
       into the swRunTable of the HOST-RESOURCES-MIB(if the value is
       smaller than 2147483647) or into the sysApplElmtRunTable of
       the SYSAPPL-MIB."

  ::= { sctpAssocEntry 12 }


-- Association Statistics

sctpAssocT1expireds OBJECT-TYPE
  SYNTAX         Counter32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The T1 timer determines how long to wait for an
       acknowledgement after sending an INIT or COOKIE-ECHO chunk.
       This object reflects the number of times the T1 timer expires
       without having received the acknowledgement.

       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 sctpAssocDiscontinuityTime."
  REFERENCE
       "Section 5 in RFC2960."


  ::= { sctpAssocEntry 13 }

sctpAssocT2expireds OBJECT-TYPE
  SYNTAX         Counter32
  MAX-ACCESS     read-only

  STATUS         current
  DESCRIPTION
       "The T2 timer determines how long to wait for an
       acknowledgement after sending a SHUTDOWN or SHUTDOWN-ACK
       chunk. This object reflects the number of times that T2- timer
       expired.

       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 sctpAssocDiscontinuityTime."
REFERENCE
       "Section 9.2 in RFC2960."
  ::= { sctpAssocEntry 14 }


sctpAssocRtxChunks OBJECT-TYPE
  SYNTAX         Counter32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "When T3-rtx expires, the DATA chunks that triggered the T3
       timer will be re-sent according with the retransmissions
       rules. Every DATA chunk that was included in the SCTP packet
       that triggered the T3-rtx timer must be added to the value of
       this counter.

       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 sctpAssocDiscontinuityTime."
  REFERENCE
       "Section 6 in RFC2960 covers the retransmission process and
       rules."

  ::= { sctpAssocEntry 15 }


sctpAssocStartTime OBJECT-TYPE
  SYNTAX         TimeStamp
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The value of sysUpTime at the time that the association
       represented by this row enters the ESTABLISHED state, i.e.,
       the sctpAssocState object is set to established(4). The
       value of this object will be zero:
       - before the association enters the established(4)
         state, or


       - if the established(4) state was entered prior to
         the last re-initialization of the local network management
         subsystem."

  ::= { sctpAssocEntry 16 }

sctpAssocDiscontinuityTime OBJECT-TYPE
  SYNTAX         TimeStamp
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The value of sysUpTime on the most recent occasion at which
       any one or more of this SCTP association counters suffered a
       discontinuity.  The relevant counters are the specific
       instances associated with this interface of any Counter32 or
       Counter64 object contained in the sctpAssocTable or
       sctpLocalAddrTable or sctpRemAddrTable.  If no such
       discontinuities have occurred since the last re-initialization
       of the local management subsystem, then this object contains a
       zero value. "
  REFERENCE
       "The inclusion of this object is recommended by RFC2578."

  ::= { sctpAssocEntry 17 }

-- Expanded tables: Including Multi-home feature

-- Local Address TABLE
-- *******************

sctpAssocLocalAddrTable OBJECT-TYPE
  SYNTAX         SEQUENCE OF SctpAssocLocalAddrEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "Expanded table of sctpAssocTable based on the AssocId index.
       This table shows data related to each local IP address which
       is used by this association."

  ::= { sctpObjects  4 }

sctpAssocLocalAddrEntry OBJECT-TYPE
  SYNTAX         SctpAssocLocalAddrEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "Local information about the available addresses. There will
       be an entry for every local IP address defined for this

       association.
       Implementors need to be aware that if the size of
       sctpAssocLocalAddr exceeds 114 octets then OIDs of column
       instances in this table will have more than 128 sub-
       identifiers and cannot be accessed using SNMPv1, SNMPv2c, or
       SNMPv3."
  INDEX     {    sctpAssocId,   -- shared index
                 sctpAssocLocalAddrType,
                 sctpAssocLocalAddr }

  ::= { sctpAssocLocalAddrTable 1 }


SctpAssocLocalAddrEntry ::= SEQUENCE {
  sctpAssocLocalAddrType        InetAddressType,
  sctpAssocLocalAddr            InetAddress,
  sctpAssocLocalAddrStartTime   TimeStamp
  }


sctpAssocLocalAddrType OBJECT-TYPE
  SYNTAX         InetAddressType
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "Internet type of local IP address used for this association."


  ::= { sctpAssocLocalAddrEntry 1 }

sctpAssocLocalAddr OBJECT-TYPE
  SYNTAX         InetAddress
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "The value of a local IP address available for this
       association. The type of this address is determined by the
       value of sctpAssocLocalAddrType."

  ::= { sctpAssocLocalAddrEntry 2 }









sctpAssocLocalAddrStartTime OBJECT-TYPE
  SYNTAX         TimeStamp
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The value of sysUpTime at the time that this row was
       created."

  ::= { sctpAssocLocalAddrEntry 3 }

-- Remote Addresses TABLE
-- **********************

sctpAssocRemAddrTable OBJECT-TYPE
  SYNTAX         SEQUENCE OF SctpAssocRemAddrEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "Expanded table of sctpAssocTable based on the AssocId index.
       This table shows data related to each remote peer IP address
       which is used by this association."

  ::= { sctpObjects  5 }


sctpAssocRemAddrEntry OBJECT-TYPE
  SYNTAX         SctpAssocRemAddrEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "Information about the most important variables for every
       remote IP address. There will be an entry for every remote IP
       address defined for this association.

       Implementors need to be aware that if the size of
       sctpAssocRemAddr exceeds 114 octets then OIDs of column
       instances in this table will have more than 128 sub-
       identifiers and cannot be accessed using SNMPv1, SNMPv2c, or
       SNMPv3."
  INDEX   { sctpAssocId,   -- shared index
            sctpAssocRemAddrType,
            sctpAssocRemAddr }

  ::= { sctpAssocRemAddrTable 1 }





SctpAssocRemAddrEntry ::= SEQUENCE {
  sctpAssocRemAddrType               InetAddressType,
  sctpAssocRemAddr                   InetAddress,
  sctpAssocRemAddrActive             TruthValue,
  sctpAssocRemAddrHBActive           TruthValue,
  sctpAssocRemAddrRTO                Unsigned32,
  sctpAssocRemAddrMaxPathRtx         Unsigned32,
  sctpAssocRemAddrRtx                Counter32,     -- Statistic
  sctpAssocRemAddrStartTime          TimeStamp
  }


sctpAssocRemAddrType OBJECT-TYPE
  SYNTAX         InetAddressType
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "Internet type of a remote IP address available for this
       association."
  ::= { sctpAssocRemAddrEntry 1 }


sctpAssocRemAddr OBJECT-TYPE
  SYNTAX         InetAddress
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "The value of a remote IP address available for this
       association. The type of this address is determined by the
       value of sctpAssocLocalAddrType."

  ::= { sctpAssocRemAddrEntry 2 }


sctpAssocRemAddrActive OBJECT-TYPE
  SYNTAX         TruthValue
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "This object gives information about the reachability of this
       specific remote IP address.

       When the object is set to 'true' (1), the remote IP address is
       understood as Active. Active means that the threshold of no
       answers received from this IP address has not been reached.




       When the object is set to 'false' (2), the remote IP address
       is understood as Inactive. Inactive means that either no
       heartbeat or any other message was received from this address,
       reaching the threshold defined by the protocol."

  REFERENCE
       "The remote transport states are defined as Active and
       Inactive in the SCTP, RFC2960."

  ::= { sctpAssocRemAddrEntry 3 }


sctpAssocRemAddrHBActive OBJECT-TYPE
  SYNTAX         TruthValue
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "This object indicates whether the optional Heartbeat check
       associated to one destination transport address is activated
       or not (value equal to true or false, respectively). "

  ::= { sctpAssocRemAddrEntry 4 }


sctpAssocRemAddrRTO OBJECT-TYPE -- T3-rtx- Timer
  SYNTAX         Unsigned32
  UNITS          "milliseconds"
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The current Retransmission Timeout. T3-rtx timer as defined
       in the protocol SCTP."
  REFERENCE
       "Section 6.3 in RFC2960 deals with the Retransmission Timer
       Management."

  ::= { sctpAssocRemAddrEntry 5 }


sctpAssocRemAddrMaxPathRtx OBJECT-TYPE
  SYNTAX         Unsigned32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "Maximum number of DATA chunks retransmissions allowed to a
       remote IP address before it is considered inactive, as defined
       in RFC2960."


  REFERENCE
       "Section 8.2, 8.3 and 14 in RFC2960."
  DEFVAL {5} -- number of attempts


  ::= { sctpAssocRemAddrEntry 6 }


-- Remote Address Statistic

sctpAssocRemAddrRtx OBJECT-TYPE
  SYNTAX         Counter32
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "Number of DATA chunks retransmissions to this specific IP
       address. When T3-rtx expires, the DATA chunk that triggered
       the T3 timer will be re-sent according to the retransmissions
       rules. Every DATA chunk that is included in a SCTP packet and
       was transmitted to this specific IP address before, will be
       included in this counter.

       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 sctpAssocDiscontinuityTime."

  ::= { sctpAssocRemAddrEntry 7 }

sctpAssocRemAddrStartTime OBJECT-TYPE
  SYNTAX         TimeStamp
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The value of sysUpTime at the time that this row was
       created."

  ::= { sctpAssocRemAddrEntry 8 }

-- ASSOCIATION INVERSE TABLE
-- *************************

-- BY LOCAL PORT

sctpLookupLocalPortTable OBJECT-TYPE
  SYNTAX         SEQUENCE OF SctpLookupLocalPortEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "With the use of this table, a list of associations which are

       using the specified local port can be retrieved."

  ::= { sctpObjects  6 }


sctpLookupLocalPortEntry OBJECT-TYPE
  SYNTAX         SctpLookupLocalPortEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "This table is indexed by local port and association ID.
       Specifying a local port, we would get a list of the
       associations whose local port is the one specified."

  INDEX         { sctpAssocLocalPort,
                 sctpAssocId }

  ::= { sctpLookupLocalPortTable 1 }


SctpLookupLocalPortEntry::= SEQUENCE {
  sctpLookupLocalPortStartTime            TimeStamp
  }


sctpLookupLocalPortStartTime OBJECT-TYPE
  SYNTAX         TimeStamp
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The value of sysUpTime at the time that this row was created.

       As the table will be created after the sctpAssocTable
       creation, this value could be equal to the sctpAssocStartTime
       object from the main table."

  ::= { sctpLookupLocalPortEntry 1 }

-- BY REMOTE PORT

sctpLookupRemPortTable OBJECT-TYPE
  SYNTAX         SEQUENCE OF SctpLookupRemPortEntry
  MAX-ACCESS     not-accessible
  STATUS         current





  DESCRIPTION
       "With the use of this table, a list of associations which are
       using the specified remote port can be got"

  ::= { sctpObjects  7 }

sctpLookupRemPortEntry OBJECT-TYPE
  SYNTAX         SctpLookupRemPortEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "This table is indexed by remote port and association ID.
       Specifying a remote port we would get a list of the
       associations whose local port is the one specified "

  INDEX         { sctpAssocRemPort,
                 sctpAssocId }

  ::= { sctpLookupRemPortTable 1 }

SctpLookupRemPortEntry::= SEQUENCE {
  sctpLookupRemPortStartTime              TimeStamp
  }


sctpLookupRemPortStartTime OBJECT-TYPE
  SYNTAX         TimeStamp
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The value of sysUpTime at the time that this row was created.

       As the table will be created after the sctpAssocTable
       creation, this value could be equal to the sctpAssocStartTime
       object from the main table."

  ::= { sctpLookupRemPortEntry 1 }

-- BY REMOTE HOST NAME

sctpLookupRemHostNameTable OBJECT-TYPE
  SYNTAX         SEQUENCE OF SctpLookupRemHostNameEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "With the use of this table, a list of associations with that
       particular host can be retrieved."


  ::= { sctpObjects  8 }


sctpLookupRemHostNameEntry OBJECT-TYPE
  SYNTAX         SctpLookupRemHostNameEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "This table is indexed by remote host name and association ID.
       Specifying a host name we would get a list of the associations
       specifying that host name as the remote one.

       Implementors need to be aware that if the size of
       sctpAssocRemHostName exceeds 115 octets then OIDs of column
       instances in this table will have more than 128 sub-
       identifiers and cannot be accessed using SNMPv1, SNMPv2c, or
       SNMPv3."

  INDEX         { sctpAssocRemHostName,
                 sctpAssocId }

  ::= { sctpLookupRemHostNameTable 1 }


SctpLookupRemHostNameEntry::= SEQUENCE {
  sctpLookupRemHostNameStartTime               TimeStamp
  }

sctpLookupRemHostNameStartTime OBJECT-TYPE
  SYNTAX         TimeStamp
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The value of sysUpTime at the time that this row was created.

       As the table will be created after the sctpAssocTable
       creation, this value could be equal to the sctpAssocStartTime
       object from the main table."

  ::= { sctpLookupRemHostNameEntry 1 }









-- BY REMOTE PRIMARY IP ADDRESS

sctpLookupRemPrimIPAddrTable OBJECT-TYPE
  SYNTAX         SEQUENCE OF SctpLookupRemPrimIPAddrEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "With the use of this table, a list of associations that have
       the specified IP address as primary within the remote set of
       active addresses can be retrieved."

  ::= { sctpObjects  9 }


sctpLookupRemPrimIPAddrEntry OBJECT-TYPE
  SYNTAX         SctpLookupRemPrimIPAddrEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "This table is indexed by primary address and association ID.
       Specifying a primary address, we would get a list of the
       associations that have the specified remote IP address marked
       as primary.
       Implementors need to be aware that if the size of
       sctpAssocRemPrimAddr exceeds 114 octets then OIDs of column
       instances in this table will have more than 128 sub-
       identifiers and cannot be accessed using SNMPv1, SNMPv2c, or
       SNMPv3."

  INDEX         { sctpAssocRemPrimAddrType,
                 sctpAssocRemPrimAddr,
                 sctpAssocId }

  ::= { sctpLookupRemPrimIPAddrTable 1 }

SctpLookupRemPrimIPAddrEntry::= SEQUENCE {
  sctpLookupRemPrimIPAddrStartTime             TimeStamp
  }


sctpLookupRemPrimIPAddrStartTime OBJECT-TYPE
  SYNTAX         TimeStamp
  MAX-ACCESS     read-only
  STATUS         current





  DESCRIPTION
       "The value of SysUpTime at the time that this row was created.

       As the table will be created after the sctpAssocTable
       creation, this value could be equal to the sctpAssocStartTime
       object from the main table."

  ::= { sctpLookupRemPrimIPAddrEntry 1 }


-- BY REMOTE IP ADDRESS

sctpLookupRemIPAddrTable OBJECT-TYPE
  SYNTAX         SEQUENCE OF SctpLookupRemIPAddrEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "With the use of this table, a list of associations that have
       the specified IP address as one of the remote ones can be
       retrieved. "

  ::= { sctpObjects  10 }


sctpLookupRemIPAddrEntry OBJECT-TYPE
  SYNTAX         SctpLookupRemIPAddrEntry
  MAX-ACCESS     not-accessible
  STATUS         current
  DESCRIPTION
       "This table is indexed by a remote IP address and association
       ID. Specifying an IP address we would get a list of the
       associations that have the specified IP address included
       within the set of remote IP addresses."

  INDEX         { sctpAssocRemAddrType,
                 sctpAssocRemAddr,
                 sctpAssocId }

  ::= { sctpLookupRemIPAddrTable 1 }


SctpLookupRemIPAddrEntry::= SEQUENCE {

  sctpLookupRemIPAddrStartTime            TimeStamp
  }




sctpLookupRemIPAddrStartTime OBJECT-TYPE
  SYNTAX         TimeStamp
  MAX-ACCESS     read-only
  STATUS         current
  DESCRIPTION
       "The value of SysUpTime at the time that this row was created.

       As the table will be created after the sctpAssocTable
       creation, this value could be equal to the sctpAssocStartTime
       object from the main table."

  ::= { sctpLookupRemIPAddrEntry 1 }


-- 4.1 Conformance Information

sctpMibConformance    OBJECT IDENTIFIER ::= { sctpMIB 2 }
sctpMibCompliances    OBJECT IDENTIFIER ::= { sctpMibConformance 1 }
sctpMibGroups         OBJECT IDENTIFIER ::= { sctpMibConformance 2 }


-- 4.1.1 Units of conformance

--
-- MODULE GROUPS
--

sctpLayerParamsGroup OBJECT-GROUP
  OBJECTS   { sctpRtoAlgorithm,
              sctpRtoMin,
              sctpRtoMax,
              sctpRtoInitial,
              sctpMaxAssocs,
              sctpValCookieLife,
              sctpMaxInitRetr
            }

  STATUS    current
  DESCRIPTION
       "Common parameters for the SCTP layer, i.e., for all the
       associations. They can usually be referred to as configuration
       parameters."

  ::= { sctpMibGroups 1 }





sctpStatsGroup OBJECT-GROUP
  OBJECTS   { sctpCurrEstab,
              sctpActiveEstabs,
              sctpPassiveEstabs,
              sctpAborteds,
              sctpShutdowns,
              sctpOutOfBlues,
              sctpChecksumErrors,
              sctpOutCtrlChunks,
              sctpOutOrderChunks,
              sctpOutUnorderChunks,
              sctpInCtrlChunks,
              sctpInOrderChunks,
              sctpInUnorderChunks,
              sctpFragUsrMsgs,
              sctpReasmUsrMsgs,
              sctpOutSCTPPacks,
              sctpInSCTPPacks,
              sctpDiscontinuityTime,
              sctpAssocT1expireds,
              sctpAssocT2expireds,
              sctpAssocRtxChunks,
              sctpAssocRemAddrRtx
            }

  STATUS    current
  DESCRIPTION
       "Statistics group. It includes the objects to collect state
       changes in the SCTP protocol local layer and flow control
       statistics."

  ::= { sctpMibGroups 2 }


sctpPerAssocParamsGroup OBJECT-GROUP
  OBJECTS   { sctpAssocRemHostName,
              sctpAssocLocalPort,
              sctpAssocRemPort,
              sctpAssocRemPrimAddrType,
              sctpAssocRemPrimAddr,
              sctpAssocHeartBeatInterval,
              sctpAssocState,
              sctpAssocInStreams,
              sctpAssocOutStreams,
              sctpAssocMaxRetr,
              sctpAssocPrimProcess,
              sctpAssocStartTime,
              sctpAssocDiscontinuityTime,

              sctpAssocLocalAddrStartTime,
              sctpAssocRemAddrActive,
              sctpAssocRemAddrHBActive,
              sctpAssocRemAddrRTO,
              sctpAssocRemAddrMaxPathRtx,
              sctpAssocRemAddrStartTime
            }

  STATUS    current
  DESCRIPTION
       "The SCTP group of objects to manage per-association
       parameters. These variables include all the SCTP basic
       features."

  ::= { sctpMibGroups 3 }

sctpPerAssocStatsGroup OBJECT-GROUP
              OBJECTS
            { sctpAssocT1expireds,
              sctpAssocT2expireds,
              sctpAssocRtxChunks,
              sctpAssocRemAddrRtx
            }

  STATUS    current
  DESCRIPTION
       "Per Association Statistics group. It includes the objects to
       collect flow control statistics per association."

  ::= { sctpMibGroups 4 }

sctpInverseGroup OBJECT-GROUP
  OBJECTS   { sctpLookupLocalPortStartTime,
             sctpLookupRemPortStartTime,
             sctpLookupRemHostNameStartTime,
             sctpLookupRemPrimIPAddrStartTime,
             sctpLookupRemIPAddrStartTime
            }

  STATUS    current
  DESCRIPTION
       "Objects used in the inverse lookup tables."

  ::= { sctpMibGroups 5 }





-- 4.1.2 Compliance Statements

--
-- MODULE COMPLIANCES
--

sctpMibCompliance MODULE-COMPLIANCE
  STATUS  current
  DESCRIPTION
       "The compliance statement for SNMP entities which implement
       this SCTP MIB Module.

       There are a number of INDEX objects that cannot be represented
       in the form of OBJECT clauses in SMIv2, but for which we have
       the following compliance requirements, expressed in OBJECT
       clause form in this description clause:

-- OBJECT        sctpAssocLocalAddrType
-- SYNTAX        InetAddressType {ipv4(1), ipv6(2)}
-- DESCRIPTION
--       It is only required to have IPv4 and IPv6 addresses without
--       zone indices.
--       The address with zone indices is required if an
--       implementation can connect multiple zones.
--
-- OBJECT        sctpAssocLocalAddr
-- SYNTAX        InetAddress (SIZE(4|16))
-- DESCRIPTION
--       An implementation is only required to support globally
--       unique IPv4 and IPv6 addresses.
--
-- OBJECT        sctpAssocRemAddrType
-- SYNTAX        InetAddressType {ipv4(1), ipv6(2)}
-- DESCRIPTION
--       It is only required to have IPv4 and IPv6 addresses without
--       zone indices.
--       The address with zone indices is required if an
--       implementation can connect multiple zones.
--
-- OBJECT        sctpAssocRemAddr
-- SYNTAX        InetAddress (SIZE(4|16))
-- DESCRIPTION
--       An implementation is only required to support globally
--       unique IPv4 and IPv6 addresses.
--
       "  -- closes DESCRIPTION clause of MODULE-COMPLIANCE

  MODULE  -- this module

       MANDATORY-GROUPS    {  sctpLayerParamsGroup,
                              sctpPerAssocParamsGroup,
                              sctpStatsGroup,
                              sctpPerAssocStatsGroup
                           }

       OBJECT  sctpAssocRemPrimAddrType
       SYNTAX  InetAddressType { ipv4(1),
                                 ipv6(2)
                               }
       DESCRIPTION
            "It is only required to have IPv4 and IPv6 addresses
            without zone indices.

            The address with zone indices is required if an
            implementation can connect multiple zones."

       OBJECT  sctpAssocRemPrimAddr
       SYNTAX  InetAddress (SIZE(4|16))
       DESCRIPTION
            "An implementation is only required to support globally
            unique IPv4 and globally unique IPv6 addresses."


       OBJECT sctpAssocState
       WRITE-SYNTAX  INTEGER { deleteTCB(9) }
       MIN-ACCESS read-only
       DESCRIPTION
            "Only the deleteTCB(9) value MAY be set by a management
            station at most. A read-only option is also considered to
            be compliant with this MIB module description."

       GROUP sctpInverseGroup
       DESCRIPTION
            "Objects used in inverse lookup tables. This should be
            implemented, at the discretion of the implementers, for
            easier lookups in the association tables"

  ::= { sctpMibCompliances 1 }

END