Solaris Tunable Parameters Reference Manual - SCN Research

When to Change
Commitment Level
Do not change the value. If under special circumstances, the
first keepalive probe needs to be sent earlier than two hours,
use the TCP_KEEPALIVE_THRESHOLD socket option to reduce
the interval on an individual application.
Unstable
tcp_keepalive_abort_interval
Description
This ndd parameter sets a default time threshold to abort a
TCP connection after the keepalive probing mechanism has
failed.
This abort time threshold can also be changed on a per socket
basis by using the TCP_KEEPALIVE_ABORT_THRESHOLD
option on a TCP socket. The option value is an unsigned
integer in milliseconds.
If an application has the SO_KEEPALIVE socket option
enabled, it can then use the TCP_KEEPALIVE_THRESHOLD
socket option to change the initial probe interval and
TCP_KEEPALIVE_ABORT_THRESHOLD socket option to
change the abort interval.
A value of zero means that TCP should never time out and
abort the connection when probing.
See also “tcp_keepalive_interval” on page 153.
Default
Range
Units
Dynamic?
When to Change
Commitment Level
8 minutes
0 to 8 minutes
Unsigned integer (milliseconds)
Yes
Do not change the value. If under special circumstances, a TCP
connection needs to be aborted earlier than the default eight
minutes of the keepalive probing, use the
TCP_KEEPALIVE_ABORT_THRESHOLD socket option to reduce
the abort interval on an individual application.
Unstable
154 Solaris Tunable Parameters Reference Manual • June 2005