Re: [PLUG] Newbie Elementary Networking Questions ABAIG

Paul <emailme@dpagin.net> · 2003年12月10日 01:37:27 -0500

Douglas Lentz wrote:
The NIC is a SIS 900/7016CI, so says redhat-config-network. When this 
box boots, it tries and fails to bring up eth0, which is not 
surprising - it's not plugged into anything.

The cable does not need to be plugged in for the interface to be 
activated. I see below that this box is actually trying to grab an IP 
from a DHCP server. First, you need to give the interface a static IP. 
You can do that by running "setup" and choosing the network option. 
Follow the prompts. Then run "ifup eth0" to and ping whatever IP you 
gave eth0 to test the config.
First question, where did eth0 go? Did I fail to include networking in 
the installation? Do I have to do a complete reinstall?

If the install didn't detect the NIC, there is nothing to activate at 
boot except the loopback interface. Try running "kudzu" to detect the 
card. If that doesn't work, you might need to look at the card and tell 
us the model or chip used on it.
I have a crossover cable running between the boxes. (It's clearly 
labeled "crossover"). I don't know whether it's cat3 or 5. According 
to "The Linux Network" I don't need a hub if all I have are two boxes. 
(TLN also says "and we'll show you how to do it" but it never does). 
My copy of TLN is about four years old and very slackware specific. It 
may be confusing me more than anything else.

I don't know. I used an old Red Hat 6 book for a long time. From a 
prompt different distros look more alike than they do in X. More than 
likely the cable is Cat5. Do the lights on the NICs light up?
If I can get eth0 up on BoxA...I notice that Box1 is trying to get IP 
info via DHCP. I doubt that's right, if there's a DHCP server around 
my house I sure didn't put it there. After I get eth0 up, I presume 
that I have to assign static IP addresses to the boxes. Does it matter 
which ones I choose, or can I pick two more or less at random? Am I 
right to use the Class C netmask 255.255.255.0? My connection to the 
internet out there is PPP dialup (interface ppp0) and my ISP assigns 
me a different IP address each time I dial in. Any potential conflicts 
here?

Interface ppp0 should be a modem. That's fine. Box1 could be assign 
192.168.0.1 if you wish. BoxA could be 192.168.0.2 if you wish. The 
class C subnet mask is perfect.

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