On Sun, 8 Mar 2009 16:20:32 -0400
Moshe Kamensky <moshe.kamensky@googlemail.com> wrote:

> We called the ISP, and from their side it seems that he is connected, 
> and everything is fine. I don't know where else to look. The log 
> messages showed in the beginning messages of the form
> 
> LCP: timeout sending Config-Requests
> 
> but they seem to no longer appear. As I said, I don't even know where to 
> start looking for the problem. Any help is appreciated.

I can suggest trying at least two things:

1. pon <connection name> debug nodetach
  You'll see a lot of messages, and, probably, some errors. Most of
  them are probably non-fatal, but try eliminating all of them by
  setting right asyncmap, compression, authentication etc
  In the end you should get IP and connection shouldn't break after a
  minute or so, which is often because of 2.

2. ip route
  Check that there's only one default route, that there's a route to IP
  you're connecing with, aside from default one through it, and that
  it's metric is lower than the default one. Check that you can still
  ping that IP.

-- 
Mike Kazantsev // fraggod.net