rfc2012.txt

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RFC 2012                   SNMPv2 MIB for TCP              November 1996


    ::= { tcp 12 }


-- the TCP Connection table

-- The TCP connection table contains information about this
-- entity's existing TCP connections.

tcpConnTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF TcpConnEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
            "A table containing TCP connection-specific information."
    ::= { tcp 13 }

tcpConnEntry OBJECT-TYPE
    SYNTAX      TcpConnEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
            "A conceptual row of the tcpConnTable containing information
            about a particular current TCP connection.  Each row of this
            table is transient, in that it ceases to exist when (or soon
            after) the connection makes the transition to the CLOSED
            state."
    INDEX   { tcpConnLocalAddress,
              tcpConnLocalPort,
              tcpConnRemAddress,
              tcpConnRemPort }
    ::= { tcpConnTable 1 }

TcpConnEntry ::= SEQUENCE {
        tcpConnState          INTEGER,
        tcpConnLocalAddress   IpAddress,
        tcpConnLocalPort      INTEGER,
        tcpConnRemAddress     IpAddress,
        tcpConnRemPort        INTEGER
    }

tcpConnState OBJECT-TYPE
    SYNTAX      INTEGER {
                    closed(1),
                    listen(2),
                    synSent(3),
                    synReceived(4),
                    established(5),
                    finWait1(6),



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RFC 2012                   SNMPv2 MIB for TCP              November 1996


                    finWait2(7),
                    closeWait(8),
                    lastAck(9),
                    closing(10),
                    timeWait(11),
                    deleteTCB(12)
                }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
            "The state of this TCP connection.

            The only value which may be set by a management station is
            deleteTCB(12).  Accordingly, it is appropriate for an agent
            to return a `badValue' response if a management station
            attempts to set this object to any other value.

            If a management station sets this object to the value
            deleteTCB(12), then this has the effect of deleting the TCB
            (as defined in RFC 793) of the corresponding connection on
            the managed node, resulting in immediate termination of the
            connection.

            As an implementation-specific option, a RST segment may be
            sent from the managed node to the other TCP endpoint (note
            however that RST segments are not sent reliably)."
    ::= { tcpConnEntry 1 }

tcpConnLocalAddress OBJECT-TYPE
    SYNTAX      IpAddress
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "The local IP address for this TCP connection.  In the case
            of a connection in the listen state which is willing to
            accept connections for any IP interface associated with the
            node, the value 0.0.0.0 is used."
    ::= { tcpConnEntry 2 }

tcpConnLocalPort OBJECT-TYPE
    SYNTAX      INTEGER (0..65535)
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "The local port number for this TCP connection."
    ::= { tcpConnEntry 3 }

tcpConnRemAddress OBJECT-TYPE



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RFC 2012                   SNMPv2 MIB for TCP              November 1996


    SYNTAX      IpAddress
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "The remote IP address for this TCP connection."
    ::= { tcpConnEntry 4 }

tcpConnRemPort OBJECT-TYPE
    SYNTAX      INTEGER (0..65535)
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "The remote port number for this TCP connection."
    ::= { tcpConnEntry 5 }

tcpInErrs OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "The total number of segments received in error (e.g., bad
            TCP checksums)."
    ::= { tcp 14 }

tcpOutRsts OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
            "The number of TCP segments sent containing the RST flag."
    ::= { tcp 15 }

-- conformance information

tcpMIBConformance OBJECT IDENTIFIER ::= { tcpMIB 2 }

tcpMIBCompliances OBJECT IDENTIFIER ::= { tcpMIBConformance 1 }
tcpMIBGroups      OBJECT IDENTIFIER ::= { tcpMIBConformance 2 }


-- compliance statements

tcpMIBCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
            "The compliance statement for SNMPv2 entities which
            implement TCP."
    MODULE  -- this module



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        MANDATORY-GROUPS { tcpGroup
                           }
    ::= { tcpMIBCompliances 1 }

-- units of conformance

tcpGroup OBJECT-GROUP
    OBJECTS   { tcpRtoAlgorithm, tcpRtoMin, tcpRtoMax,
                tcpMaxConn, tcpActiveOpens,
                tcpPassiveOpens, tcpAttemptFails,
                tcpEstabResets, tcpCurrEstab, tcpInSegs,
                tcpOutSegs, tcpRetransSegs, tcpConnState,
                tcpConnLocalAddress, tcpConnLocalPort,
                tcpConnRemAddress, tcpConnRemPort,
                tcpInErrs, tcpOutRsts }
    STATUS    current
    DESCRIPTION
            "The tcp group of objects providing for management of TCP
            entities."
    ::= { tcpMIBGroups 1 }

END





























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RFC 2012                   SNMPv2 MIB for TCP              November 1996


3.  Acknowledgements

   This document contains a modified subset of RFC 1213.

4.  References

   [1]  Information processing systems - Open Systems Interconnection -
        Specification of Abstract Syntax Notation One (ASN.1),
        International Organization for Standardization.  International
        Standard 8824, (December, 1987).

   [2]  McCloghrie, K., Editor, "Structure of Management Information
        for version 2 of the Simple Network Management Protocol
        (SNMPv2)", RFC 1902, Cisco Systems, January 1996.

   [3]  Postel, J., "Transmission Control Protocol - DARPA Internet
        Program Protocol Specification", STD 7, RFC 793, DARPA,
        September 1981.

   [4]  McCloghrie, K., and M. Rose, "Management Information Base for
        Network Management of TCP/IP-based internets: MIB-II", STD 17,
        RFC 1213, March 1991.

   [5]  Jacobson, V., "Congestion Avoidance and Control", SIGCOMM 1988,
        Stanford, California.

5.  Security Considerations

   Security issues are not discussed in this memo.

6.  Editor's Address

   Keith McCloghrie
   Cisco Systems, Inc.
   170 West Tasman Drive
   San Jose, CA  95134-1706
   US

   Phone: [phone]
   EMail: [e-mail]











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