RFC1792 - TCP/IPX Connection Mib Specification

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, RFC1213 defines

TCP connection MIB object and UDP listener object assuming just that.

For TCP and UDP running over IPX, tcpConnTable and udpTable objects

from RFC1213 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

-- 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 RFC793) 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 RFC793) 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