[SOLVED] Home Router (X, IRQ, DHCP)

BennyP · Last edited by BennyP on Mon Jan 31, 2005 2:10 am; edited 2 times in total

I have two NICs in my gentoo box, an ne2000 card and a card that uses 8139too. I have an iBook connected to the gentoo box and a cable modem.

My connection is Cable/DHCP.

I followed the gentoo home router guide, and had both computers online, but then I tried to switch TTYs to the GDM screen, and my gentoo box had a hard panic. I rebooted, and now eth1 wont come up!!!!!!
What can I do?
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teknomage1 · Posted: Sun Jan 30, 2005 1:23 am Post subject:

what happens if you type (as root) '/etc/init.d/net.eth1 start' ?

BennyP · Posted: Sun Jan 30, 2005 1:27 am Post subject:

it hangs at the "bringing eth1 up via DHCP"
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BennyP · Posted: Sun Jan 30, 2005 2:25 am Post subject:

is there a log file i should check for specific errors??
i checked the log in /var/log/everything/current but that didn't give any usefull info
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teknomage1 · Posted: Sun Jan 30, 2005 3:05 am Post subject:

not sure, i guess make sure the modules for eth1's NIC are loaded and double check that all the info in the configs you editted before the lock up are correct. Maybe it lost an edit or something.

BennyP · Posted: Sun Jan 30, 2005 3:23 am Post subject:

i double checked everything in the guide - no good. I know it's not the modem because i just unplugged the gentoo box and plugged in the ibook and now i'm posting.

I will try swapping the NICs
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BennyP

ok i swapped the nics and now I can connect using my gentoo box, but not my iBook. here is some output from dhcp initscript

teknomage1 · Posted: Sun Jan 30, 2005 3:48 am Post subject:

what happens if you run 'ifconfig eth0 192.168.0.1' ?

SavageMindz · Posted: Sun Jan 30, 2005 6:03 am Post subject:

I think you problem is this.

If you want to run a dhcp server (looks like you do) then you need to fix the ip address on the server interface (in this case that looks like eth0)

So teknomage1 is correct that you have to run ifconfig before you bring up you dhcp server.

I'm not quite sure how you have this wired. What do you mean when you say....

BennyP · Posted: Sun Jan 30, 2005 7:53 pm Post subject:

ok here's the phylical setup:
cable modem connects to the bottom ethernet card on my gentoo box(eth1) (which i also use as a desktop/audio production machine)
ibook connects to the top card on gentoo(eth0)

I ran ipconfig eth0 192.168.0.1 and /etc/init.d/dhcp restart and now both machines are online, thanks!! How do i rig it so that i will not have to run these two commands each time I start up?

As for the broadcast line, I just capied it right out of the home router guide. Could you please explain what it means?

after posting this I will attempt to startx on the gentoo box, but I'm afraid it will probably freeze the whole system

p3 800
384 mb ram
voodoo 5 5500 agp graphics
latest xorg
ALSA

I suspoct the problem may be with ALSA/X conflict, but can't confirm this.
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teknomage1 · Posted: Sun Jan 30, 2005 9:15 pm Post subject:

You mean the broadcast address of 192.168.0.255? All IP address blocks have at least two reserved numbers .0 represents that network itself and .255 which represent all computers in that block. It gets more complicated with trickier subnet masks but that's the gist of the broadcast line.
Double check the contents of your /etc/conf.d/net file to make sure that eth0 is set to the static IP of 192.168.0.1 and that eth1 is set to dhcp.

here's the entire /etc/conf.d/net from my router

BennyP · Posted: Sun Jan 30, 2005 9:23 pm Post subject:

Ok I checked /etc/conf.d/net and made the neccesary changes.
I Think it might be better for me to dredge up one of the old boxen in my garage that i found on the street and turn it into the router instead of trying to use one computer as a desktop and a router all at once, but the major problem with that is extra power consumption, and possible lack of NICs

I'm going to go over to a friend's place later on in the week and grab some parts and computers from them, so my collection of junked out motherboards and skeleton computers will grow and grow mwahahahah

*recycle cycle, coming down the road*
*recycle cycle, with your recycle load*
*just find a treasure, throw it in the bin*
*recycle cycle, and use it over again!*
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teknomage1 · Posted: Sun Jan 30, 2005 11:35 pm Post subject:

Good luck with that. My router's a 75Mhz pentium SX so it doesn't really take all that much to be a nice firewalling router.

BennyP · Posted: Mon Jan 31, 2005 2:09 am Post subject:

I Fixed the problem of the hard locking. It was an IRQ conflict.
I had it set up like this, in order from top down on the PCI bus:

Graphics card
Sound Card
eth0
eth1
--
--
--

The NICs had to duke it out with the GFX and snd chips for priority access to CPU time and memory, thus locking the system. I replaced the NICs in their bottom slots and zoom zoom zoom away we go! Now it looks like this:

Graphics Card
Sound Card
--
--
--
eth0
eth1

Now on to the next problem: Samba!
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iainvt · Guru Joined: 12 Sep 2004 Posts: 462 Location: UK

How do I see if this will solve the system freeze I get trying to bring eth1 up, eth0 is fine but not eth1, if it is how do I change the positions?
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iain