TCP/IPv6 Configuration and Management Manual (G06.29+, H06.03+, J06.03+)

SCF Reference for NonStop TCP/IPv6
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-012
8-72
INFO MON Command for TCP6MAN
otherwise the queue length in the socket request is used. The default value is 128.
The range is 1 to 1024.
Initial TTL
specifies the initial value for UDP and TCP TTL (Time To Live). The default is 64,
but can be altered to 30.
Min-Ephemeral-Port
is the starting port number to allocate for TCP and UDP ephemeral ports.
Ephemeral ports are those assigned by NonStop TCP/IPv6 when an application
has not bound to a specific port. The default is 1024. The allowable range is 1 to
1024 (MAX-EPHEMERAL-PORT - 16). See Considerations on page 8-48 and
Examples on page 8-48. See also Max-Priv-Port int.
Max-Ephemeral-Port
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.
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
is a value that is used to calculate the initial TCP congestion window. The value for
TCPCWNDMULTIPLIER is multiplied by the TCP maximum segment size (MSS) to
calculate a value for the TCP congestion window. Therefore, the
TCPCWNDMULTIPLIER attribute allows for the setting of a larger initial window
value on a TCP connection. The default value for this attribute is 2. The allowed
range is 1 though 10.
TCP SACKON { ON | OFF }
specifies whether or not all TCP connections use TCP selective
acknowledgements, unless such selective acknowledgements are specifically
disabled by an application. ON enables selective acknowledgements. OFF
disables them. The default value is OFF.