Problems with Fedora and cable modem
Marc Maxwell
linuxr at gmail.com
Mon Nov 29 17:04:10 UTC 2004
On Mon, 29 Nov 2004 10:51:19 -0600, Aleksandar Milivojevic
<amilivojevic at pbl.ca> wrote:
> I have a problem with my Fedora box and cable modem. I'm not sure if
> the problem is on my side, or ISP side (Shaw cable). Of course, ISP
> claims it is not them, what else would you expect ;-)
>
> Basically, what happens is that dhclient obtains IP address for my
> external interface. Than everything works fine for some period of time
> (less than a half an hour), and after that I loose all Internet
> connectivity. If i restart dhclient (for example using "ifdown eth0;
> ifup eth0"), my PC gets IP address reassigned (in my case, I'm always
> getting same address, 24.79.220.4), everything works for a while, and
> than it stops again.
>
> Something like this happened about a month ago, and restarting the
> interface solved the problem. Yesterday it started to happen again, but
> this time restarting the interface solves the problem for about a half
> an hour, and than there it is again...
>
> I have two more interfaces on this Linux box. One is toward my internal
> network, and another is toward DMZ. Those two have static IP addresses,
> and everything seems to be working fine with those two.
>
> What I have observed when this happens, is that I can sometimes ping the
> router on ISP side (24.79.220.1), but nothing else. Sometimes.
> Sometimes ping to ISP router doesn't work at all, or works partially
> with large percentage of lost packets (95-99% range).
>
> Anybody else had similar problem?
>
> --
> Aleksandar Milivojevic <amilivojevic at pbl.ca> Pollard Banknote Limited
> Systems Administrator 1499 Buffalo Place
> Tel: (204) 474-2323 ext 276 Winnipeg, MB R3T 1L7
> fedora-list mailing list
> fedora-list at redhat.com
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I have had problems like this where you go back and forth and the ISP
says everything is perfect on their end. I had to call them
repeatedly but eventually they said that there was 20% packet loss!
They wound up resetting their router, also the tech came out and put
me on a shorter length cable. Not sure if attenuation is a factor,
but I was on about a 50' cable prior to that and after all of this, I
don't have the problem anymore, so I am not sure of the fix in this
case. I do know it had nothing to do with the OS. I have had zero
problems with dhcp on any fedora
Marc
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