static ip problems

Jarhead · Guru Joined: 26 Mar 2004 Posts: 474

I am doing a fresh install on my desktop, which is in the process of being re-purposed. I have never had networking problems with this machine or the cards in question before.

The livecd networking worked fine, and, since I think I will be swapping parts out of the system as needed, I used genkernel as a time-saver. When I reboot the machine, the 8139 card (driver 8139too) receives the static IP fine, but cannot ping sites. I swapped the card in favor of an e100 card, which shows up in /etc/init.d as net.eth0, but is not recognized as a valid interface.

I am puzzled over this, as the driver is loaded, and the configuration should be correct (config_eth0="192.bla.bla.bla"). Is this a known issue?
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nixnut · Posted: Sun Jul 08, 2007 2:55 pm Post subject:

Is the driver for the the e100 loaded?
Did you specify a default route too?
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PaulSorensen · Posted: Sun Jul 08, 2007 8:23 pm Post subject:

Jarhead · Guru Joined: 26 Mar 2004 Posts: 474

I put the original network card back in, rebooted into the livecd, and got the output of "192.168.2.0" from route. My /etc/conf.d/net now reads:

think4urs11 · Posted: Mon Jul 09, 2007 5:56 am Post subject:

two possible issues with your current config

a) the netmask is missing (it might work without though)
not exactly sure if your config would fallback to a netmask /24 (255.255.255.0) by default
b) the default route is most probably wrong as .0 is in most cases the network address
to be precise the 'smallest' netmask i can think of where 192.168.2.0 could be a 'normal' host would be /22 (255.255.252.0) - which would give network 192.168.0.0, broadcast 192.168.3.255, leaving everything in between for host addresses

better config would be

Jarhead · Guru Joined: 26 Mar 2004 Posts: 474

You are correct. I am able to ping the router with the config

schally · Apprentice Joined: 13 May 2004 Posts: 207

Sry haven't been under linux for a while but there is a simple rule for networking,...

default gateway toward internet,...

so like Think4UrS11 said the right configuration would probably be:

config_eth0="192.168.2.2/24"
routes_eth0="default via 192.168.2.1"

and not

config_eth0="192.168.2.5/24"
routes_eth0="192.168.2.1" --> cause this would perhaps only route it to a network called this way (cause it got no mask and not this "default via"-thing ,... but i'm not sure,...

Cisco routing would look like:

ip route 0.0.0.0 0.0.0.0 192.168.2.1 --> for default gateway by the way,...

on your router is nothing like nat, pat or similar?
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