RFC1792

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.

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.

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

    -- 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 {

               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

                   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 }

       -- 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)

           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

                   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 }

       -- 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

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: [email protected]