Multiple Interfaces Issue

Marco Obaid marco at
Mon Dec 30 19:08:01 CST 2002

Hello all,

I have PowerEdge 4600 running Redhat 7.3, factory installation. 
The system came with two embedded NICs, a 10/100 and 10/100/1000. There is also 
an additional NIC (external) INTEL PRO100S. 

My ifcfg-eth0 is as follows:

All I need is to configure another NIC with this address:
Sounds pretty straight forward but I am not able to make it work ...

Here is the problem:

I copy ifcfg-eth0 to ifcfg-eth1 and edit it appropriately. As soon as I do a 
restart or do /etc/init.d/network restart , I lose one of the IP addresses. For 
example, I will only be able to ping and not 

I have tried everything that I can think off, including disabling both the 
embedded NICs and attempting to sub-interface eth0 to eth0 and eth0:0 with no 
success. Depending on the combination of things, works but not or vice versa or nothing at all ... Both NICs are on the same 

Can anyone please give me a hint? 

I have another PowerEdge 6400 with 6 interfaces and everything is running fine. 
The only difference between the two systems is that the 6400 is running 7.1

Is it a Redhat issue? hardware issue? or am I missing something?

This is my first post so I apologize if I left out anything.

Thank you so much for any help
    _/     _/  _/    _/  _/     _/ | Marco Obaid   
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