The default keepalive setting for AIX is 2 hours. We have a lot of remote connections and had smilar issues until I lowered it to 15 mins. Now we never have that problem (although remote connections go down for other reasons, obviously, so they aren’t hassle-free). The keepalive setting affects all of the cloverleaf sockets.
To determine current keepalive setting:
$ no -a | grep tcp_keepidle
tcp_keepidle = 14400 (14400=2 hours in 1/2-second intervals)
To change keep alive setting to 30 minutes (value is in half-second intervals):
– Login as Root and type the following command:
no -o tcp_keepidle=3600
(1800 for 15 minutes)
Also, add the command to the bottom of /etc/rc.net to auto-reset after reboot.
