Very Computer

by **Pwel Mast** » Fri, 16 Jun 2000 04:00:00

Yello,
I currently have a RH 6.0 server with 2 NIC cards : one on a local
network and the other hooked up to a cable modem. I'm running IP
masquerading some my local network can have access to the net.

Everything runs fine for a couple of days. After about 5 days, we
notice that on _some_ machines of the local net, access to the
Internet slows down and then stops working (after about 1 day of slow
connection). About one day later, even the servers connection to the
net stops working (on the cable modem connection). A network restart
fixes the problem, but only temporarily. The only thing that works is
a complete reboot of the server.

I looked at ifconfig's info and there are no errors. I tcpdumped both
interfaces to see where the traffic was being blocked and it seems
that the packets are going out, but when they come back, they don't
seem to be able to _all_ go through the cable modem connection. When
this happens, ping works fine (packets are going in and out no prob).
Also, memory usage seems normal (no leaks).
I'm clueless!

Here is a little info on the server:
P133 64 megs RAM
Inet services: telnet, ftp, cvs, pop2 and pop3.
Server also running sendmail, inn, ypserv, httpd, mysql and samba.
eth0 : local net interface 10.10.10.1/255.255.255.0 (always works
fine)
eth1 : cable modem, DHCP server at my ISP

Any clues?

Thanks,
Phil

by **Michael Mensc** » Fri, 16 Jun 2000 04:00:00

I have a similar problem.
I'm running RH6.2 server and two winblows boxes thru the server.
and every so often my connection to the internet stops(or gets really
slow)
i found that if i unplug my cable modem then plug it back in the network
comes back.
i looked through my firewall logs for the time that the network stopped
(i was on one of the times) and found last IP address that was logged.

so i think it's some thing they are doing to throttle down the speed.
(or stop you if they think you are using to much)

i hooked an X10 module to the cable modem power.
next i'm going to have the linux server automatically cycle the power to
the modem
when it loses connection to the internet.

hope this helps

mike

> Yello,
> I currently have a RH 6.0 server with 2 NIC cards : one on a local
> network and the other hooked up to a cable modem. I'm running IP
> masquerading some my local network can have access to the net.

> Everything runs fine for a couple of days. After about 5 days, we
> notice that on _some_ machines of the local net, access to the
> Internet slows down and then stops working (after about 1 day of slow
> connection). About one day later, even the servers connection to the
> net stops working (on the cable modem connection). A network restart
> fixes the problem, but only temporarily. The only thing that works is
> a complete reboot of the server.

> I looked at ifconfig's info and there are no errors. I tcpdumped both
> interfaces to see where the traffic was being blocked and it seems
> that the packets are going out, but when they come back, they don't
> seem to be able to _all_ go through the cable modem connection. When
> this happens, ping works fine (packets are going in and out no prob).
> Also, memory usage seems normal (no leaks).
> I'm clueless!

> Here is a little info on the server:
> P133 64 megs RAM
> Inet services: telnet, ftp, cvs, pop2 and pop3.
> Server also running sendmail, inn, ypserv, httpd, mysql and samba.
> eth0 : local net interface 10.10.10.1/255.255.255.0 (always works
> fine)
> eth1 : cable modem, DHCP server at my ISP

> Any clues?

> Thanks,
> Phil

Very Computer

Network slows down then stops. Plz help me!!!

Network slows down then stops. Plz help me!!!

Network slows down then stops. Plz help me!!!