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
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ALTER MON Command for TCPMAN
MIN-EPHEMERAL-PORT int
is the starting port number to allocate for TCP and UDP ephemeral ports.
Ephemeral ports are those assigned by Parallel Library TCP/IP when an
application has not bound to a specific port. The default is 1024. The allowable
range is 1024 to (MAX-EPHEMERAL-PORT - 16). See Considerations and
Examples.
Everything below min-ephemeral-port requires super-group privileges. If you alter
min-ephemeral-port to be greater than 1024, be aware that all ports between 1024
and min-ephemeral-port can only be opened by privileged users, that is, super-
group users.
MAX-EPHEMERAL-PORT int
is the largest port number to allocate for TCP and UDP ephemeral ports. The
default is 65024. The allowable range is (MIN-EPHEMERAL-PORT + 16) to 65535.
Each TCPMON is allocated one sixteenth of the range between min-ephemeral-
port and max-ephemeral-port. For example, using the defaults, #ZPTM0 is
allocated 1024-5023, #ZPTM1 is allocated 5024-9023 and so on. See
Considerations and Examples.
Examples
The following command alters the DELAYACKS and DELAYACKSTIME attributes on
all configured TCPMONs.
-> ALTER MON $ZZTCP.*, DELAYACKS ON, DELAYACKSTIME 20
The following command alters the TCPSENDSPACE to 4096 on all configured
TCPMONs.
-> ALTER MON $ZZTCP.*, TCPSENDSPACE 4096
The following command changes the TCP and UDP port range to 32768 to 65535.
-> ALTER MON $ZZTCP.*, MIN-EPHEMERAL-PORT 32768
Considerations
The MIN-EPHEMERAL-PORT and MAX-EPHEMERAL-PORT attributes have been
added to allow you to modify the ephemeral port-range used by the TCPMONs to be
more usable in your environment. The ephemeral port range is between 1024 and
65024. Each processor is allocated one sixteenth of this range.