    Network Working Group                                            T. Sung
    Request for Comments: 1792                                  Novell, Inc.
    Category: Experimental                                        April 1995

                      TCP/IPX Connection Mib Specification

    Status of this Memo

       This document defines an Experimental Protocol for the Internet
       community.  This does not specify an Internet standard of any kind.
       Discussion and suggestions for improvement are requested.
       Distribution of this memo is unlimited.

    IESG Note:

       Internet Engineering Steering Group comment from the Area Director
       for Transport Services: Please note well that this memo is an
       individual product of the author.  Implementation experience,
       particularly on the effectiveness of the protocols in dual-stack
       environments, is needed.

    1.  Introduction

       Traditionally, TCP and UDP runs over IP.  STD 17, RFC 1213 defines
       TCP connection MIB object and UDP listener object assuming just that.
       For TCP and UDP running over IPX, tcpConnTable and udpTable objects
       from RFC 1213 cannot be used since they define the address to be of
       type IpAddress.  As such, we need to define new objects that can
       properly describe TCP and UDP connections over IPX.

       New MIB objects, tcpIpxConnTable, udpIpxTable, tcpUnspecConnTable and
       udpUnspecTable are presented in this paper, to be used in place of
       tcpConnTable and udpListenerTable when TCP and UDP are running over
       IPX.

    2.  Objects

               TCPIPX-MIB DEFINITIONS ::= BEGIN

               IMPORTS
                       OBJECT-TYPE
                               FROM RFC-1212;

            -- IPX address type.
            -- First 4 octests are the network numbers and the last 6
            -- octests are the node numbers.  In ascii, it is represented

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    RFC 1792                      TCP/IPX MIB                     April 1995

            -- as hex digits, as in:  nnnnnnnn:mmmmmmmmmmmm

            IpxAddress ::= OCTET STRING (size (10))

               -- TCP/IPX MIB object idenfifiers

            novell        OBJECT IDENTIFIER ::= { enterprises 23 }
            mibDoc        OBJECT IDENTIFIER ::= { novell 2 }
            tcpx          OBJECT IDENTIFIER ::= { mibDoc 29 }
            tcpxTcp       OBJECT IDENTIFIER ::= { tcpx 1 }
            tcpxUdp       OBJECT IDENTIFIER ::= { tcpx 2 }

              -- the TCP/IPX Connection table

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

               tcpIpxConnTable OBJECT-TYPE
                   SYNTAX  SEQUENCE OF TcpIpxConnEntry
                   ACCESS  not-accessible
                   STATUS  mandatory
                   DESCRIPTION
                           "A table containing information specific on
                           TCP connection over IPX network layer."

                   ::= { tcpxTcp 1 }

               tcpIpxConnEntry OBJECT-TYPE
                   SYNTAX  TcpIpxConnEntry
                   ACCESS  not-accessible
                   STATUS  mandatory
                   DESCRIPTION
                           "Information about a particular current TCP
                           connection over IPX  An object of this type is
                           transient, in that it ceases to exist when (or
                           soon after) the connection makes the transition
                           to the CLOSED state."
                   INDEX   { tcpIpxConnLocalAddress,
                             tcpIpxConnLocalPort,
                             tcpIpxConnRemAddress,
                             tcpIpxConnRemPort }
                  ::= { tcpIpxConnTable 1 }

               TcpIpxConnEntry ::=
                   SEQUENCE {

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    RFC 1792                      TCP/IPX MIB                     April 1995

                       tcpIpxConnState
                           INTEGER,
                       tcpIpxConnLocalAddress
                           IpxAddress
                       tcpIpxConnLocalPort
                           INTEGER (0..65535),
                       tcpIpxConnRemAddress
                           IpxAddress,
                       tcpIpxConnRemPort
                           INTEGER (0..65535)
                   }

               tcpIpxConnState OBJECT-TYPE
                   SYNTAX  INTEGER {
                               closed(1),
                               listen(2),
                               synSent(3),
                               synReceived(4),
                               established(5),
                               finWait1(6),
                               finWait2(7),
                               closeWait(8),
                               lastAck(9),
                               closing(10),
                               timeWait(11),
                               deleteTCB(12)
                           }
                   ACCESS  read-write
                   STATUS  mandatory
                   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

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    RFC 1792                      TCP/IPX MIB                     April 1995

                           segments are not sent reliably)."
                   ::= { tcpIpxConnEntry 1 }

               tcpIpxConnLocalAddress OBJECT-TYPE
                   SYNTAX  IpxAddress
                   ACCESS  read-only
                   STATUS  mandatory
                   DESCRIPTION
                           "The local IPX address for this TCP connection.
                           In the case of a connection in the listen state
                           which is willing to accept connections for any
                           interface, the value 00000000:000000000000 is
                           used.  See tcpUnspecConnTable for connections in
                           the listen  state which is willing to accept
                           connects for any IP interface associated with
                           the node."
                   ::= { tcpIpxConnEntry 2 }

               -- NetworkAddress defined in SMI only include IP currently,
               -- so we can't use it to represent both IP and IPX address.

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

               tcpIpxConnRemAddress OBJECT-TYPE
                   SYNTAX  IpxAddress
                   ACCESS  read-only
                   STATUS  mandatory
                   DESCRIPTION
                           "The remote IPX address for this TCP connection."
                   ::= { tcpIpxConnEntry 4 }

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

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    RFC 1792                      TCP/IPX MIB                     April 1995

               -- the UDP Listener table

               -- The UDP listener table contains information about this
               -- entity's UDP end-points on which a local application is
               -- currently accepting datagrams.

               udpIpxTable OBJECT-TYPE
                   SYNTAX  SEQUENCE OF UdpIpxEntry
                   ACCESS  not-accessible
                   STATUS  mandatory
                   DESCRIPTION
                           "A table containing UDP listener information."
                   ::= { tcpxUdp 1 }

               udpIpxEntry OBJECT-TYPE
                   SYNTAX  UdpIpxEntry
                   ACCESS  not-accessible
                   STATUS  mandatory
                   DESCRIPTION
                           "Information about a particular current UDP
                           listener."
                   INDEX   { udpIpxLocalAddress, udpIpxLocalPort }
                   ::= { udpIpxTable 1 }

               UdpIpxEntry ::=
                   SEQUENCE {
                       udpIpxLocalAddress
                IpxAddress
                       udpIpxLocalPort
                           INTEGER (0..65535)
                   }

               udpIpxLocalAddress OBJECT-TYPE
                   SYNTAX  IpxAddress
                   ACCESS  read-only
                   STATUS  mandatory
                   DESCRIPTION
                           "The local IPX address for this UDP listener.  In
                           the case of a UDP listener which is willing to
                           accept datagrams for any interface, the value
                           00000000:000000000000 is used.  See
                           udpUnspecTable for UDP listener which is
                           willing to accept datagrams from any network
                           layer."
                   ::= { udpIpxEntry 1 }

               udpIpxLocalPort OBJECT-TYPE
                   SYNTAX  INTEGER (0..65535)

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    RFC 1792                      TCP/IPX MIB                     April 1995

                   ACCESS  read-only
                   STATUS  mandatory
                   DESCRIPTION
                           "The local port number for this UDP listener."
                   ::= { udpIpxEntry 2 }

               -- the TCP/UNSPEC Connection table

               -- The TCP/UPSPEC connection table contains information
               -- about this entity's existing TCP connections over
               -- unspecified network.
               -- Since the network is unspecified, the network
               -- address is also unspecified.  Hence, this
               -- connection table does not include any network
               -- address.

               tcpUnspecConnTable OBJECT-TYPE
                   SYNTAX  SEQUENCE OF TcpIpxConnEntry
                   ACCESS  not-accessible
                   STATUS  mandatory
                   DESCRIPTION
                           "A table containing information specific on
                           TCP connection over unspecified network layer."

                   ::= { tcpxTcp 2 }

               tcpUnspecConnEntry OBJECT-TYPE
                   SYNTAX  TcpUnspecConnEntry
                   ACCESS  not-accessible
                   STATUS  mandatory
                   DESCRIPTION
                           "Information about a particular current TCP
                           connection over unspecified network layer.  An
                           object of this type is transient, in that it
                           ceases to exist when the connection makes
                           transition beyond LISTEN state, or when (or
                           soon after) the connection makes transition
                           to the CLOSED state,"

                   INDEX   { tcpUnspecConnLocalPort }
                   ::= { tcpUnspecConnTable 1 }

               TcpUnspecConnEntry ::=
                   SEQUENCE {
                       tcpUnspecConnState
                           INTEGER,
                       tcpUnspecConnLocalPort

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    RFC 1792                      TCP/IPX MIB                     April 1995

                           INTEGER (0..65535),
                   }

               tcpUnspecConnState OBJECT-TYPE
                   SYNTAX  INTEGER {
                               closed(1),
                               listen(2),
                               deleteTCB(12)
                           }
                   ACCESS  read-write
                   STATUS  mandatory
                   DESCRIPTION
                           "The state of this TCP connection.

                           Since the TCP connection can belong to this table
                           only when its state is less than SYN_SENT, only
                           closed and listen state apply.

                           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)."
                   ::= { tcpUnspecConnEntry 1 }

               tcpUnspecConnLocalPort OBJECT-TYPE
                   SYNTAX  INTEGER (0..65535)
                   ACCESS  read-only
                   STATUS  mandatory
                   DESCRIPTION
                           "The local port number for this TCP connection."
                   ::= { tcpUnspecConnEntry 2 }

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    RFC 1792                      TCP/IPX MIB                     April 1995

               -- the UDP Listener table

               -- The UDP listener table contains information about this
               -- entity's UDP end-points over unspecified network layer,
               -- on which a local application is currently accepting
               -- datagrams.  If network layer is unspecified, the network
               -- address is also unspecified.  Hence, this table does not
               -- include any network address.

               udpUnspecTable OBJECT-TYPE
                   SYNTAX  SEQUENCE OF UdpUnspecEntry
                   ACCESS  not-accessible
                   STATUS  mandatory
                   DESCRIPTION
                            "A table containing UDP listener information."
                   ::= { tcpxUdp 2 }

               udpUnspecEntry OBJECT-TYPE
                   SYNTAX  UdpUnspecEntry
                   ACCESS  not-accessible
                   STATUS  mandatory
                   DESCRIPTION
                           "Information about a particular current UDP
                           listener."
                   INDEX   { udpUnspecLocalPort }
                   ::= { udpUnspecTable 1 }

               UdpUnspecEntry ::=
                   SEQUENCE {
                       udpUnspecLocalPort
                           INTEGER (0..65535)
                   }

               udpUnspecLocalPort OBJECT-TYPE
                   SYNTAX  INTEGER (0..65535)
                   ACCESS  read-only
                   STATUS  mandatory
                   DESCRIPTION
                           "The local port number for this UDP listener."
                   ::= { udpUnspecEntry 1 }

                END

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    RFC 1792                      TCP/IPX MIB                     April 1995

    Acknowledgement

       The author would like to thank following folks and others for their
       assitance: Greg Minshall, Dave Piscitello.

    Security Considerations

       Security issues are not discussed in this memo.

    Author's Address

       Tae Sung
       Novell, Inc.
       2180 Fortune Drive
       San Jose, California, 95131

       Phone: (408)577-8439
       EMail: tae@novell.Com

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