Dummy lan question

[Vaughn Treude]

Robert,
Thanks for your reply.  I've found a solution, almost accidentally.  To start 
with, I thought the problem might have been that Mandrake had a problem with 
the integral NIC on the new motherboard, so I installed a spare PCI Netgear 
board.  Mandrake found it but this one wouldn't work either.  I even tried 
installing an older Mandrake (8.0.)  That's when I got a funny error message 
with a penguin icon - didn't stop the install, but it said something like 
"Only one processor found."  I figured I must have accidentally enabled SMP, 
even though the board only has a slot for one.  Perusing the BIOS options 
revealed something called APIC that was enabled by default.  I did a Google 
search and saw a message that mentioned APIC and SMP in the same sentence,
so I disabled APIC (though it really seems to have more to do with PCI 
interrupt assignments.)  And it worked!  Not only did the network problems go 
away, but my problems with the SCSI adapter went away as well.  Go figure.

Vaughn


On Wednesday 30 April 2003 03:10, you wrote:
> Are you using IP addresses in the ping command?  When diagnosing a
> problem, start simple and work you way forward one step at a time.  A ping
> with an IP address is about as simple as you can get.
>
> Also, make sure you get viable MAC address in the HWaddr field of the
> ifconfig command for your interface. This tells you that the driver can
> talk to the NIC.
>
> If you think you have a route table problem and you have the iproute
> package installed, try something like 'ip r g 192.168.1.x', where
> 192.168.1.x is the IP address you were trying to ping.  This command will
> return the route the kernel selects to forward the packet.
>
> rna
>
> On Fri, 25 Apr 2003, Vaughn Treude wrote:
> > Hello:
> > Yet another dumb question related to my new setup.  My NIC is configured
> > and ifconfig claims it's UP.  I have the table set up correctly - at
> > least, it's configured the same as on my older Mandrake system (see
> > below.)  I know the NIC, cable and router all work because it worked in
> > Red Hat on the system in question.  I've supposedly set the firewall
> > rules "off" because this is an internal system.  What happens is that
> > when I try to ping any other system on the LAN (or any other system tries
> > to ping the new system) I get "Destination Host Unreachable."  A check of
> > the ifconfig seems to indicate that eth0 has no send or receive bytes,
> > but loopback (lo) increases the values of both numbers each time I do the
> > ping.  The "hostname" is set correctly; the computer with that hame
> > "vaughn.nakota.com"  is defined with the correct IP address in the hosts
> > file.  I also tried tinkering with the hosts.allow file, but my other
> > systems work with out it (hosts.deny is empty.)
> >
> > Output of route:
> > Destination     Gateway         Genmask         Flags Metric Ref    Use
> > Iface 192.168.1.0     *               255.255.255.0   U     0      0     
> >   0 eth0 127.0.0.0       *               255.0.0.0       U     0      0  
> >      0 lo default         basil           0.0.0.0         UG    0      0 
> >       0 eth0
> >
> > The system "basil" is my gateway and its IP is defined in the hosts file.
> > Any ideas?  It seems like I've probably got some simple setting wrong
> > somewhere.
> >
> > Thanks,
> > Vaughn
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