I have the same problem. No answer yet, but at least we can commiserate.
We're using our linux box as a router with IP masquerade for internet
access for a small group of Win9x and NTWS PCs at home. I've seen (in the
system log) our v.90 modem stay connected as long as 2 hours, usually
much shorter, but almost always at least 30 minutes. PPP automatically
reconnects and all is good again for another 30 minutes or more, but it's
The 30-minute periodicity is very suspicious, isn't it. I've wondered
whether it's my ISP (also linux based) that cuts us off due to lack of
activity, but haven't asked them. The line cuts out very rarely when were
actively using it. The cutouts mostly (but not always) occur when the
traffic is idle for a while. I've thought about using software to maintain
a low level of intermittent traffic going but haven't gotten around to
trying it. Think I've seen something that would do the trick in Red Hat's
Power Tools, or maybe it was at Linuxburg.
Good luck. Wish I could offer more than guesses. Would love to hear if you
figure it out. I'll do the same.
> I have a permanent PPP connection via v.90 modem. The connection is
> handled by a machine running RH6.0
> The modem dials out and connects every time. Then anywhere from 30
> seconds to 30 minutes later, the connection drops out. It doesn't seem
> to be related usage or time.
> The same modem and phone line manages to stay connected indefinitely
> from Win 98.
> Any ideas?