Well there is one way you can do that without rebooting. You can stop
/sbin/init.d/net and restart it. I have no idea what impact this will
have on your network if you do this on a server. It will all depend on
how your client machines interact with the server.
You could create a cron job to shutdown, restart and get your stats in
the early hours of the morning, giving all your clients time to reconnect
to the server for the likes of NIS, etc.
Regards,
Vance Brasher
Unix System Administrator
Dril-Quip Inc