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S12700 V200R011C10 MIB Reference

This document provides the function overview, relationships between tables, description of single objects, description of MIB tables, and description of alarm objects.
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tcpConnectionTable

tcpConnectionTable

A table containing information about existing TCP connections including IPv4 TCP connections and IPv6 TCP connections. Note that unlike earlier TCP MIBs, there is a separate table for connections in the LISTEN state.

This table contains the following objects:

  • tcpConnectionLocalAddressType

  • tcpConnectionLocalAddress

  • tcpConnectionLocalPort

  • tcpConnectionRemAddressType

  • tcpConnectionRemAddress

  • tcpConnectionRemPort

  • tcpConnectionState

  • tcpConnectionProcess

The indexes of this table are tcpConnectionLocalAddressType, tcpConnectionLocalAddress, tcpConnectionLocalPort, tcpConnectionRemAddressType, tcpConnectionRemAddress and tcpConnectionRemPort.

OID

Object Name

Syntax

Max Access

Description

Implemented Specifications

1.3.6.1.2.1.6.19.1.1

tcpConnectionLocalAddressType

InetAddressType

Not-accessible

This object indicates the address type of tcpConnectionLocalAddress.

The value of this object is an enumerated value, and can be IPv4(1), IPv4z(2), IPv6(3), or IPv6z(4). If a TCP socket interface can receive both IPv4 packets and IPv6 packets, the value of this object can also be unknown(0).

Currently, the TCP module of the switches support only IPv4(1) and IPv6(3).

1.3.6.1.2.1.6.19.1.2

tcpConnectionLocalAddress

InetAddress

Not-accessible

The object indicates the local IP address for this TCP connection. The type of this address is determined by the value of tcpConnectionLocalAddressType.

As this object is used in the index for the tcpConnectionTable, implementors should be careful not to create entries that would result in OIDs with more than 128 subidentifiers; otherwise the information cannot be accessed by using SNMPv1, SNMPv2c, or SNMPv3.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.2.1.6.19.1.3

tcpConnectionLocalPort

InetPortNumber

Not-accessible

This object indicates the local port number for this TCP connection.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.2.1.6.19.1.4

tcpConnectionRemAddressType

InetAddressType

Not-accessible

This object indicates the address type of tcpConnectionRemAddress.

The value of this object is an enumerated value, and can be IPv4(1), IPv4z(2), IPv6(3), and IPv6z(4). If a TCP socket interface can receive both IPv4 packets and IPv6 packets, the value of this object can also be unknown(0).

Currently, the TCP module of the switches only support IPv4(1) and IPv6(3).

1.3.6.1.2.1.6.19.1.5

tcpConnectionRemAddress

InetAddress

Not-accessible

The object indicates the remote IP address for this TCP connection. The type of this address is determined by the value of tcpConnectionRemAddressType.

As this object is used in the index for the tcpConnectionTable, implementors should be careful not to create entries that would result in OIDs with more than 128 subidentifiers; otherwise the information cannot be accessed by using SNMPv1, SNMPv2c, or SNMPv3.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.2.1.6.19.1.6

tcpConnectionRemPort

InetPortNumber

Not-accessible

This object indicates the remote port number for this TCP connection.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.2.1.6.19.1.7

tcpConnectionState

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)

}

Read-write

The value of this object identifies the status of this TCP connection.

The value listen(2) is included only for parallelism to the old tcpConnTable and should not be used. A connection in LISTEN state should be present in the tcpListenerTable.

The only value that 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 the TCB (as defined in [RFC793]) of the corresponding connection on the managed node is deleted, resulting in immediate termination of the connection.

As an implementation-specific option, an RST segment may be sent from the managed node to the other TCP endpoint (note, however, that RST segments are not sent reliably).

Currently, the supported maximum access is read-only.

1.3.6.1.2.1.6.19.1.8

tcpConnectionProcess

Unsigned32

Read-only

This object indicates the system's process ID for the process associated with this connection, or zero if there is no such process. This value is expected to be the same as HOST-RESOURCES-MIB:: hrSWRunIndex or SYSAPPL-MIB::sysApplElmtRunIndex for some row in the appropriate tables.

This object is implemented as defined in the corresponding MIB file.

Creation Restriction

The entries in this table cannot be created.

Modification Restriction

The only value that the management process can set to the tcpConnectionTable is 12 (For example, terminate the connection immediately).

Deletion Restriction

The entries in this table cannot be deleted.

Access Restriction

The entries in this table can be read only when the system has established TCP connections.

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Updated: 2019-03-29

Document ID: EDOC1000178122

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