Ethernet LAN Going Offline with XP & Linux on same hub

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Subject Author Date
Going Offline with XP & Linux on same hub bpanders71 08-03-06
Posted by on August 3, 2006, 12:11 pm
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I had an odd experience the other day while building a Linux machine.
I was installing Puppy Linux on an old computer, and set it up for
DHCP. I have two main machines in my office connected to a 5 port
Linksys 10/100 workgroup hub. one an XP Pro machine that is my main
desktop, and the other a SUSE 10 Linux box acting as DHCP server and
backup server.

Once I had Puppy Linux installed and configured, I started to test
connectivity, surf the web, use rdesktop, etc. When this happened I
noticed my XP machine (only) got knocked offline. I shut off the Puppy
Linux machine and I still had problems until I physically removed the
ethernet cable from the Puppy's network card.

I tried setting Puppy up for static IP, but ran into the same problem.
I then installed Damn Small Linux with similar results. Again, in both
cases, lost network conenctivity in XP until I pulled the network
cable. SUSE Linux seemed to be fine during all this.

The only thing I can think that might be a problem is both Puppy and
DSL asked for a broadcast address which might be causing a problem wth
the hub? Shere SWAG here. I'd like to hook the Puppy/DSL linux box up
to a Linksys SD216 switch on a network with win2k and SUSE 10 machines
and am wondering if I might experience the same problem. I can't
afford to have machines go offline for whatever reason.

Any thoughts? What am I not seeing or configuring properly?

Thanks-
Brian


Posted by Robert Redelmeier on August 3, 2006, 2:03 pm
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bpanders71@hotmail.com wrote in part:
> I had an odd experience the other day while building a
> Linux machine. I was installing Puppy Linux on an old
> computer, and set it up for DHCP. I have two main machines
> in my office connected to a 5 port Linksys 10/100 workgroup
> hub. one an XP Pro machine that is my main desktop, and
> the other a SUSE 10 Linux box acting as DHCP server and
> backup server.

> Once I had Puppy Linux installed and configured, I started
> to test connectivity, surf the web, use rdesktop, etc.
> When this happened I noticed my XP machine (only) got
> knocked offline. I shut off the Puppy Linux machine and I
> still had problems until I physically removed the ethernet
> cable from the Puppy's network card.

> I tried setting Puppy up for static IP, but ran into the
> same problem. I then installed Damn Small Linux with
> similar results. Again, in both cases, lost network
> conenctivity in XP until I pulled the network cable.
> SUSE Linux seemed to be fine during all this.

First, the stupid question: you aren't plugging the Puppy
into a Xover port next to the XP machines cable? Some small
switches/hubs have one more jack than their capabilities.
That extra jack is an XOver for uplink.

Otherwise, dump the arp and route tables from the Linux DHCP server.
This seems more hardware than software. Try a different hub.

-- Robert


Posted by on August 3, 2006, 2:40 pm
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Robert Redelmeier wrote:

> First, the stupid question: you aren't plugging the Puppy
> into a Xover port next to the XP machines cable? Some small
> switches/hubs have one more jack than their capabilities.
> That extra jack is an XOver for uplink.
>
> Otherwise, dump the arp and route tables from the Linux DHCP server.
> This seems more hardware than software. Try a different hub.
>
> -- Robert

No, I've got the port next to the Xover empty. I'll dig up another hub
and give it a go. Thanks!

Brian


Posted by Perkowski on August 4, 2006, 1:22 pm
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Im not a network guru, but, could it be possible you dont have enough range
for the IP addresses set correctly for your DHCP server? I know if a
machine takes the same IP address from another that machine gets booted off
the network????

Perkowski

> Robert Redelmeier wrote:
>
> > First, the stupid question: you aren't plugging the Puppy
> > into a Xover port next to the XP machines cable? Some small
> > switches/hubs have one more jack than their capabilities.
> > That extra jack is an XOver for uplink.
> >
> > Otherwise, dump the arp and route tables from the Linux DHCP server.
> > This seems more hardware than software. Try a different hub.
> >
> > -- Robert
>
> No, I've got the port next to the Xover empty. I'll dig up another hub
> and give it a go. Thanks!
>
> Brian
>



Posted by on August 4, 2006, 2:39 pm
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Perkowski wrote:
> Im not a network guru, but, could it be possible you dont have enough range
> for the IP addresses set correctly for your DHCP server? I know if a
> machine takes the same IP address from another that machine gets booted off
> the network????
>
> Perkowski

Interesting thought, but I have 95 IP addresses available for my DHCP
server with only a half dozen DHCP enabled machines (including the XP
machine in question), the rest are all static IP. The good news is
this machine is destined for a remote office with only static IP, if
this is indeed the case.

Thanks for the idea-
Brian


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