TCPIP$UCP_HELP.HLB  —  SET  CONFIGURATION  PROTOCOL  TCP Qualifiers

1    /MTU_SEGMENT_SIZE

       /MTU_SEGMENT_SIZE
       /NOMTU_SEGMENT_SIZE

    Optional. Default: /NOMTU_SEGMENT_SIZE.

    If a connection is more than one hop away, sets the segment size.
    Specify one of the following:

    /MTU_SEGMENT_SIZE  Sets the segment size as close as possible to
                       the maximum transfer unit (MTU) size.
    /NOMTU_SEGMENT_    Sets the segment size as close as possible to
    SIZE               the standard 512 bytes.

2    /DELAY_ACK

       /DELAY_ACK
       /NODELAY_ACK

    Optional. Default: /DELAY_ACK.

    Enables or disables a delay before sending acknowledgments:

    /DELAY_ACK         ACKs are generated with a delay.
    /NODELAY_ACK       ACKs are generated without any delay.

3    /DROP_COUNT

       /DROP_COUNT=n

    Optional.

    Number of idle probes that can go unsatisfied before the software
    declares a TCP connection dead and closes it.

4    /PROBE_TIMER

       /PROBE_TIMER=n

    Optional. Default: 75 seconds.

    Number of seconds between probes for idle TCP connections (when
    the SO_KEEPALIVE option is set). If the remote system fails to
    respond, the connection is removed. Also, when initiating a TCP
    connection request, indicates the maximum number of seconds that
    the software waits for a response from the remote system before
    the request times out.

5    /QUOTA

       /QUOTA=[SEND=bytes,RECEIVE=bytes]

    Optional.

    Specifies the queue size (in bytes) for messages.

    The options for setting TCP message queue size are:

    o  RECEIVE:n - Receive queue size. Default: 4096 bytes.

    o  SEND:n - Send queue size. Default: 4096 bytes.

6    /WINDOW_SCALE

       /WINDOW_SCALE
       /NOWINDOW_SCALE

    Optional.

    Turns TCP window scaling on and off. Default is on.

    Scaling allows windows larger than 64 KB to be represented in the
    normal 16-bit TCP window field. Large windows allow improved
    throughput. Turning this option off may help troubleshoot
    communication problems with another TCP/IP implementation.
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