SUMMARY: Using SO_KEEPALIVE under Digital UNIX 3.2g

From: Tonny Madsen <tma_at_nettest.dk>
Date: 16 Sep 1997 08:20:17 +0200

Yesterday I wrote...

>>I have a problem with TCP/IP keep-alive messages under Digital UNIX
>>3.2g and I wondered if anybody knows of any errors and/or problems
>>with these.

Before the end of the day, Louis Bouchard
<lbouchar_at_bouyguestelecom.fr>, informed me that the timeout is
controlled by a sysconfig variable inet/tcp_keepidle (the unit seems
to be 1/2 seconds). To change this variable one can...

# sysconfig -q inet | grep tcp_keepidle
tcp_keepidle=14400
# sysconfig -r inet tcp_keepidle=60
tcp_keepidle : reconfigured
# sysconfig -q inet | grep tcp_keepidle
tcp_keepidle=60

To make the setting permanent, the file /etc/sysconfigtab must be
extented with the lines...

inet:
<tab> tcp_keepidle=60

Maybe somebody can inform me why the default for the keep-alive timer
is so high? (14400 seconds = 3 hours = veeery loong time).

/tonny
Received on Tue Sep 16 1997 - 08:55:13 NZST

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