Re: Router/LAN Randomly Disconnects Internet Until Reset
From: Frank McCallister (anonymous_at_discussions.microsoft.com)
Date: 05/11/04
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Date: Mon, 10 May 2004 19:23:40 -0500
Hi John
Since you have replaced the router I would try replacing the NIC. I have
seen NICs act that way.
Frank McCallister
COMPUMAC
"John Smith" <smith@smith.com> wrote in message
news:ueooGgtNEHA.1340@TK2MSFTNGP12.phx.gbl...
> What could be causing this?
>
> - SBS 2003 Premium, two NIC's, accessing internet through a 4 port router.
> - Router is DMZ'd, with ISA handling the firewall chores.
> - Server is a DHCP server, router is not a DHCP server.
> - Static internet address, on ADSL
>
> At least once a day, the network connection between the SBS box and the
> router goes down. The RX lights on the DSL modem continue to indicate
> something is coming from the outside world, but no TX. If I unplug the
> router and plug it back in, the problem is fixed. I can also
disable/enable
> the LAN in Network Places with the same effect.
>
> I have replaced the router, with a different brand. Same result. Sometimes
> the connection lasts as long as 24 hours, sometimes as little as a few
> minutes. Most often, though, it is about 24 hours.
>
> There are no entries in the logs to indicate anything has gone awry, other
> than POP and other warnings because they can't access the internet.
>
> All other server tasks seem to be OK. That is, there is no effect on
> internal LAN access. It is just the internet, through the router, that
goes
> down.
>
> There does not seem to be any common application or user activity that
> triggers the shutdown.
>
> The server was put into service in January. We had this problem, or one
very
> similar, until we replaced the router. It worked fine until we moved the
> server last week, and since bringing it back online, it has exhibited the
> problem. I KNOW that all cables have been connected in exactly the same
way
> as before. The server was only moved about 2 feet, so it wasn't knocked
> around at all.
>
> The move is the suspicious part, of course, but this problem did exist
> before, and I'm not sure why it went away for this period of time.
>
> Does anybody have ideas? Is there anything I can check in the server's
> network plumbing?
>
> Thanks
>
> Craig Zawada
>
>
>
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