Re: Dialup Problems

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mtu settings too big?

Joe

John Zimmerman wrote:

I am having a problem dialing up to my ISP with linux and am
wondering if anyone has any ideas as to what could be wrong. The modem
and connection work fine under Windows (dual boot machine). I have tried all sorts of init
strings and nothing has changed.


The logs on the ISP side don't report anything abnormal. They report that the connection has been terminated normally on my end.

My setup is as follows:
RedHat Linux 9
using wvdial / and or modem lights with ifup ppp0
modem is external serial V92 (Actiontec)
Two ethernet adapters configured with static ip addresses


My Problem is that whenever I try to sustain a data transer longer than 20
seconds or so the transfer rate goes to zero and the connection stops
working, even though wvdial and modem lights say the connection is still
up. pings don't work and there is no dns resolution. Running /sbin/route
while the connection is in this state hangs also with no output.


I can browse the web or run an ssh connection over the connection fine but
as soon as I start doing something like install a package with apt-get it
hangs. Same with downloading larger files with a web browser. It is not
consistent when it stops functioning but it usually doesn't take very long
and it happens every connection eventually. My only resort is to hang up
and redial.


The problem happens both when the ethernet adapters are activated or inactivated (like through the redhat-network-config GUI).

Any help is appreciated.









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