Help: configure networking

[Daniel Carrera]

I've figured out that the problem is not hardware because I can use a 
Dapper Live CD on the same computer and connect.

I've also figured out that it's probably not a problem in 
/etc/network/interfaces because I copied that file from the Live CD to 
the disk and it made no difference.

But I don't know what else to try. Any suggestions? I would really 
appreciate any help.

Because this is an LTSP server, it will have a DHCP server in it. How do 
you configure that? Could that be the problem? This is the setup I want:

internet --> router/DHCP server --> Edubuntu server --> thin clients

The router connects to the Edubuntu server on eth0, and the clients 
connect on eth1. So Edubuntu should listen to DHCP on eth0 and serve 
DHCP on eth1.

Cheers,
Daniel.

Daniel Carrera wrote:
> Hello,
> 
> I've installed Edubuntu Dapper LTSP. Next I want to configure 
> networking. I have two ethernet cards:
> 
> eth0 - connects to the wider network - hardware:Davicom Semiconductor
> eth1 - will serve to thin clients    - hardware:Intel 82562EZ
> 
> I don't have either of them working right now. I'm starting with eth0. 
> This server is inside a Windows network serving DHCP (192.168.0.x) that 
> in turn connects to the internet.
> 
> I tried the GUI first: sudo network-admin; enable eth0 and set it to 
> DHCP. But that didn't do anything. I can't even ping other computers on 
> this network:
> 
> $ ping 192.168.0.12
> PING 192.168.0.82 (192.168.0.82) 56(84) bytes of data.
>  From 192.168.0.12 icmp_seq=2 Destination Host Unreachable
>  From 192.168.0.12 icmp_seq=3 Destination Host Unreachable
> 
> So I tried something manual. I edited /etc/network/interfaces to:
> 
> <quote>
> auto lo
> iface lo inet loopback
> 
> auto eth0
> iface eth0 inet dhcp
> </quote>
> 
> Then ran /etc/init.d/networking restart, but again, no luck. I got 
> several lines of output, but this is what seems relevant:
> 
> <quote>
> DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
> ...
> No DHCPOFFERSreceived
> No working leases in persistent database
> </quote>
> 
> Where the '...' is another 6 lines like the DHCPDISCOVER line but with 
> different values for 'interval' (no idea what that means).
> 
> I've ruled out any problem outside the computer. I can plugin my laptop 
> on the same ethernet cable and connect.
> 
> Any help would be really appreciated.
> 
> Cheers,
> Daniel.


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"It's like a rainbow. Without an observer at a 23 degree angle to
the light reflected a cloud of spherical droplets, there is no
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23 degree to the universe."  -- Zoya Boone, Red Mars