Help for MVS Stack Connection Detail

This help page explains the detail information for a selected connection.

Connection Details between

Shows the IP addresses and ports of the partner sockets for this connection.

Target Appl

The target VTAM application name.

LU Name

The VTAM LU name.

Log Mode

The VTAM logmode through which the application is connected through.

Last Activity

The number of 100ths of seconds since this entry was last used.

Connection Status

The current status of this connection. The values used to describe the connection status are obtained from RFC1213 (tcpConnState definition). Connection status can have one of the following values: closed(1), listen(2), synSent(3), synReceived(4), established(5), finWait1(6), finWait2(7), closeWait(8), lastAck(9), closing(10), timeWait(11), or deleteTCB(12).

Bytes In

The number of bytes received from IP for this connection.

Buffered In

The number of incoming bytes buffered.

Bytes Out

The number of bytes sent to IP for this connection.

Buffered Out

The number of outgoing bytes buffered.

Round Trip Time

The amount of time that has elapsed, measured in milliseconds, from when the last TCP segment was transmitted by the TCP Stack until the ACK was received.

Round Trip Variance

The round trip variance time.

Retransmissions

The number of re-transmissions.

Current Retransmissions

The number of current re-transmissions.

Duplicate Acks Received

The number of duplicate ACKs received for this connection.

TCB Address

The subtask ID represents the task that opened the socket and is updated again during bind processing. It is actually the TCB address.

Resource ID

The resource ID is the numeric identification of this resource.

Local Resource

Resource Name is the text identification of this resource. It represents the user who opened the socket and is updated again during the bind processing.

Max Send Segment Size

The maximum segment size you can send.

Max Receive Buffer Size

The maximum receive buffer size.

Optimal Max Segment Size

The optimal maximum segment size. The range of this value is from 0 to 65535.

Telnet Mode

This flag indicates the following Telnet modes:

Slow Start Threshold

The slow start threshold value.

Congestion Window

The congestion window.

Send Window

The send window size.

Max Send Window

The maximum send window size that is seen.

Bits

The bits options that can be set for a MIB object. A 1 under a bit field denotes that the bit is set to on.

Socket Options

The following bits can be set for socket options:

TCP Timers

The following bits can be set for the flag for TCP timer:

TCP Signals

The following bits can be set for the flag for TCP signals:

TCP Select

TCP select flag byte for TCP select conditions. It is mapped as follows:

Special TCP Protocol

This flag will hold special TCP protocol conditions:

TCP Poll

This flag will indicate the following TCP poll conditions: