TCP/IP Configuration and Management Manual

SCF Reference
TCP/IP Configuration and Management Manual—427132-004
4-29
ALTER PROCESS Command
together with the TCP/IP process stack. OFF declares that only the TCP/IP
process stack is saved.
ALLNETSARELOCAL ON | OFF
The default is ON. ON causes TCP to use the interface MTU as a base for
determining the TCP Maximum Segment Size (MSS) for each non-local TCP
connection. A non-local TCP connection is one that goes to another network (not
just another subnetwork).
If ALLNETSARELOCAL is OFF, TCP conforms to RFC-specified behavior and
uses 512 bytes as the default MSS for non-local segments. For example, for
Ethernet, when ALLNETSARELOCAL is ON, the non-local MSS is 1460; setting
ALLNETSARELOCAL to ON can improve performance.
TPCOMPAT42 ON | OFF
is the flag used to set the TCP/IP process compatible with BSD4.2 versions as
follows: if the flag is ON, then the original ACK minus 1 is sent in the keepalive
packet; if the flag is OFF, the original ACK is sent in the keepalive packet.
TCPPATHMTU ON | OFF
is ON to cause TCP to use PATH MTU discovery on all TCP-type sockets
(SOCK_STREAM) unless disabled on a socket by the SETSOCKOPT for
SO_PMTU. The default for this option is OFF. PATH MTU is not supported on UDP
sockets. The option, when enabled, only affects new TCP sockets; existing sockets
are not changed.
EXPANDSECURITY ON | OFF
is ON to cause TCP to check if a SOCKET request from another Expand node has
passed the Expand security check. This means the user is valid on this system and
has correct remote passwords. If the check fails then the SOCKET request is
rejected with file error 48. The default for this option is OFF
TCPTIMEWAIT ON | OFF
is the amount of time in seconds that a TCP connection remains in the TIME_WAIT
state. The default is 60 seconds. The range is 1 to 120.
ARPTIMER-REFRESHED ON | OFF
is ON to cause TCP to restart the ARP timer every time the ARP table entry is
referenced when transmitting an IP packet. The default for this option is OFF. If this
option is enabled stale ARP table entries may take longer to be flushed.
Default: ON.
Default The default value of this flag is ON.