Re: 2 NIC cards not talking

chuck
2004-01-23T00:52:17Z

Hi, Devesh:

I think 'destination host unreachable' is a routing problem.
I think that then no packets are transmitted.
If true, ping would not run and there is no ping failure.

I think we are done with your original problem of 'ping' failure.

I am guessing, because you never reported the output of
ifconfig eth0, eth1, lo
only that they were 'configured correctly'.

Is eth0 == external network (internet?)?
Is eth1 == internal network 192.168.1.1?
If yes, why would they ping each other?
I see no reason for your internal NIC to 'talk to' your external NIC.
I see no reason for your external NIC to 'talk to' your internal NIC.

I think the two NICs should never see each others packets without
passing through the router host.

From your previous 'netstat -nr' report,
from that host,
if you 'ping -c 4 192.168.1.x'
the host will route the packets to eth1;
if you ping any other address
the host will route the packets to eth0.

OBTW, when I

ping -I eth0 192.168.1.1
ping: bad interface address 'eth0'

is what I get. I do have an eth0 device. :-|

HTH, Chuck

"Chadha, Devesh" wrote:
>
> The name is Devesh.
>
> I have already answered the question in an earlier email. However, once
> again for your convenience,
>
> Ping -I eth0 192.168.1.1 gives Destination host unreachable.
> Ping -I eth1 xxx.xxx.xxx.xxx also gives Destination host unreachable.
>
> So pinging from eth0 to ip of eth1 and vice versa give dest host
> unreachable.
>
> Pinging from eth1 to external gateway also gives dest host unreachable.
>
> Let me know if u need more info
>
> Regards,
> Devesh