TCP/IP (Parallel Library) Configuration and Management Manual

SCF Reference for Parallel Library TCP/IP
HP NonStop TCP/IP (Parallel Library) Configuration and Management Manual—522271-006
5-48
INFO PROCESS Command for TCPSAM
Trace Status
is ON when the process is being traced using SCF.
Trace Filename
is the name of the current trace file.
RFC1323 Enable
is ON to cause TCP to support TCP Large Windows as documented in RFC 1323.
When this option is enabled, Parallel Library TCP/IP uses the TCP Window Scale
and Timestamp options as described in RFC 1323. The largest TCP window
supported is 262144 bytes when this option is enabled, and 65535 when the option
is disabled. The default for this option is ON.
TCP-INIT-REXMIT-TIMEOUT
is the initial retransmit timer value in milliseconds to use on a TCP connection.
When the first round trip timer measurement is made on a TCP connection and the
calculation is done to arrive at the retransmission timeout to use on the next packet
sent, this value is used unless the calculated value is larger. This variable can be
used to help reduce the number of premature retransmission timeouts. The default
is 1000 milliseconds, or 1 second. The range is 200 to 30000 milliseconds.
TCP-MIN-REXMIT-TIMEOUT
is the minimum value allowed for the TCP retransmission timeout. If this value is
too low the PTCPIP process might generate premature retransmissions. If this
value is set too high, real retransmissions is delayed, increasing the time for error
recovery. The default is 1000 milliseconds. The range is 50 to 30000 milliseconds.
TCP Listen Queue Min
is the minimum queue length that is set on a TCP socket when the PTCPIP
process handles a socket LISTEN or ACCEPT_NW1 function call. This value is
used if the queue length specified in the socket request is lower, otherwise the
queue length in the socket request is used. The default value is 5. The range is 1
to 1024.
INITIAL-TTL
specifies the initial value for UDP and TCP TTL. The default is 64, but may be
altered to 30. The only valid values are 30 and 64.
Considerations
Even though the detailed display option for the PROCESS object has an asterisk (*) in
front of some fields, they are not alterable. TCPSAM does not support the ALTER
command. In order to alter those parameters which have an asterisk (*) in front of them
in the display, alter the TCPMON object instead.