TCP/IPv6 Configuration and Management Manual (G06.24+)

SCF Reference for NonStop TCP/IPv6
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-008
8-47
ALTER MON Command for TCP6MAN
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 TCP6MON 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 on page 8-48 and Examples on page 8-48.
MAX-PRIV-PORT int
is the largest TCP and UDP port number that needs super user access. The
default is 1023. The maximum value is one less than the MIN-EPHEMERAL-PORT
value. Ports between MAX_PRIV_PORT and MIN-EPHEMERAL-PORT are
available for applications without super group status.
TCPCWNDMULTIPLIER int
is a value that is used to calculate the initial TCP congestion window. The value
specified in TCPCWNDMULTIPLIER is multiplied by the TCP maximum segment
size (MSS) to calculate a value for the TCP congestion window. The default value
for this attribute is 2. The allowed range is 1 through 10. Therefore, on a TCP
connection, the TCPCWNDMULTIPLIER attribute allows for the setting of an initial
window value larger or smaller than the default window size (2X maximum
segment size).
TCPSACKON { ON | OFF }
specifies whether or not all TCP connections use TCP selective
acknowledgements, unless specifically disabled by an application. ON enables
selective acknowledgements. OFF disables them. The default value is OFF.
NONSHAREDOUTDIST { ON | OFF }
specifies whether or not the outbound data paths for connections over nonshared
IP failover pairs are distributed over both SUBNETs of the failover pair. On enables
distribution over both SUBNETs. OFF disables it. The default value is OFF.
FAMILY { INET | INET6 | DUAL }
specifies the network mode of the TCP6MON. You can specify these modes:
TCP-MAX-REXMIT-TIMEOUT
is the maximum time value in milliseconds allowed for a TCP retransmission
timeout. The default is 64000 milliseconds. The range is 500 to 1200000 (.5
seconds to 20 minutes).
INET TCP6MON is operated in IPv4 only mode.
INET6 TCP6MON is operated in IPv6 only mode.
DUAL TCP6MON is operated in both IPv4 mode andPv6 mode.