[Linux-disciples] Recognizing a new NIC

[Adam Rosi-Kessel]

Jason A. Smith wrote:
> I have a machine with a NIC built-in. I think it is crapping out. So, I
> have installed another NIC. Now, I need my machine to recognize the new
> NIC on boot. I was pointed to /etc/network/interfaces as the locale for
> this information... I am unsure how to proceed at this point.

First step is to see if your network card is recognized.  Run 'dmesg' and see if any 
network cards show up there.  It should tell you the name of the interface that is 
created if it sees the card--typically the first card is eth0, and then if there are 
additional ones they will be eth1, eth2, etc..  Wireless cards often have a different 
naming convention, for example, my wireless card is ath0; I've also seen wlan0.

If your system sees your card and has created an interface for it, then you can set a 
default configuration for the card in /etc/network/interfaces.  You should have a 
stanza there for your old card; you just need to substitute in the new interface name 
if there is one.

You can get details about that file by typing 'man interfaces'.

If your card isn't being seen, you may need to get the module for it.  Some network 
cards have proprietary drivers that you need to download separately which can be 
tricky.  But let's start by seeing if your kernel even sees the card at all.
-- 
Adam Rosi-Kessel
http://adam.rosi-kessel.org
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