Can't get IP through hub

Chickencha · n00b Joined: 16 Dec 2006 Posts: 21

I've had a working Gentoo install for a few months. Now, after moving my computer to a new location that has a slightly different network setup, I'm having network troubles: dhcpcd is timing out at boot. I've tried running /etc/init.d/net.eth0 manually after boot and tried running dhcpcd eth0 as well. Both had the same result.

My old setup was simply my computer connected to a router, while my new setup is my computer connected to a hub which is connected to a router. (It might also be interesting to note that the routers in these setups are the same model.) I know that the problem is with my computer because I've tried putting a different computer in its place and that computer had no troubles. I haven't actually tried connecting my computer directly to this new router because it's fairly inconvenient and I can see no reason why it wouldn't work, having worked with another router that was exactly the same.

I've messed around with my /etc/conf.d/net a little. Initially I didn't have anything there, so my eth0 defaulted to dhcp. That worked fine in my old setup, so I never bothered to change it. With these new problems I've added the following to /etc/conf.d/net:

vaguy02 · Posted: Sun Nov 18, 2007 4:01 am Post subject:

Okay, this is going to be a really dumb question, but is your NIC card starting up at all. Meaning is eth0 starting correctly?
_________________
Linux Registered User #458185

Intel Quad-Core w/ 4gigs Ram w/ 8800 GTX - Windows 7 RC
2x (Intel Dual-Core w/ 2gigs Ram - Gentoo)
Mac G5 Dual-Core w/ 2gigs Ram - OS 10.5

Chickencha · n00b Joined: 16 Dec 2006 Posts: 21

Yes, I'm positive eth0 is starting correctly. As mentioned, my install has been fine for several months. During boot, I can see that eth0 is started, then dhcpcd tries to get an IP and times out. (I am assigned some sort of default IP after the timeout, but it does me no good.)

The only thing that's changed is the location of the computer and the network itself. I haven't changed anything in my kernel configuration or anything else that I can think of that would affect my NIC's ability to start. Thank you for your response, though.

flybynite · l33t Joined: 06 Dec 2002 Posts: 620

There was a change in the newer version of dhcpcd. Try adding the -I option.

dhcpcd_eth0="-I ''

or emerge dhcpcd with the vram flag.

padoor · Advocate Joined: 30 Dec 2005 Posts: 4185 Location: india

you can keep the /etc/conf.d/net the default file without any change or editing.
boot with cd and copy resolv.conf to /etc again.
manually add route and gateway
try to run dhcpcd manually after boot up.
you cannot specify a static ip in a dhcp connection.
ping your gateway
one or more of the above may work for you.
_________________
reach out a little bit more to catch it (DON'T BELIEVE the advocate part under my user name)

cjubon · Posted: Sun Nov 18, 2007 3:20 pm Post subject:

Chickencha · n00b Joined: 16 Dec 2006 Posts: 21

vaguy02 · Posted: Sun Nov 18, 2007 5:48 pm Post subject:

please post

Chickencha · n00b Joined: 16 Dec 2006 Posts: 21

(Please note that all of the following was copied by hand, so it is possible that there are typos. I've done my best to reproduce it accurately.)

vaguy02 · Posted: Sun Nov 18, 2007 6:45 pm Post subject:

I don't see eth0 (or any network interface listed on your rc-status output).....

Are you manually starting your network interface once in the kernel?
_________________
Linux Registered User #458185

Intel Quad-Core w/ 4gigs Ram w/ 8800 GTX - Windows 7 RC
2x (Intel Dual-Core w/ 2gigs Ram - Gentoo)
Mac G5 Dual-Core w/ 2gigs Ram - OS 10.5

Chickencha · n00b Joined: 16 Dec 2006 Posts: 21

I'm not sure what you mean. I can tell you that if I run rcstatus -a, net.lo shows up at the boot runlevel as [ started ] and net.eth0 shows up at the "UNASSIGNED" runlevel as [ started ], which doesn't seem quite right...

vaguy02 · Posted: Sun Nov 18, 2007 6:52 pm Post subject:

Try doing this.

Chickencha · n00b Joined: 16 Dec 2006 Posts: 21

Okay, I tried that, but still no luck. (It still seems strange, though, since I seem to remember adding net.eth0 to the default runlevel when I installed Gentoo. Oh well.)

vaguy02 · Posted: Sun Nov 18, 2007 7:00 pm Post subject:

Can you do another

Chickencha · n00b Joined: 16 Dec 2006 Posts: 21

Yes, it did. net.eth0 is now listed under default as [ started ].

vaguy02 · Posted: Sun Nov 18, 2007 7:06 pm Post subject:

Are you able to ping the dhcp server by address now?
_________________
Linux Registered User #458185

Intel Quad-Core w/ 4gigs Ram w/ 8800 GTX - Windows 7 RC
2x (Intel Dual-Core w/ 2gigs Ram - Gentoo)
Mac G5 Dual-Core w/ 2gigs Ram - OS 10.5

Chickencha · n00b Joined: 16 Dec 2006 Posts: 21

No, I just get the message "connect: network is unreachable."

vaguy02 · Posted: Sun Nov 18, 2007 7:17 pm Post subject:

ugh, okay. I defer to someone else. If it shows that the network interface is active, and other people can connect and your dhcpcd has a default config.....I'm out of suggestions.
_________________
Linux Registered User #458185

Intel Quad-Core w/ 4gigs Ram w/ 8800 GTX - Windows 7 RC
2x (Intel Dual-Core w/ 2gigs Ram - Gentoo)
Mac G5 Dual-Core w/ 2gigs Ram - OS 10.5

Chickencha · n00b Joined: 16 Dec 2006 Posts: 21

Okay, thank you for your responses. I appreciate it.

Edit:

For anyone else who might be able to help, I have found a few things that could be relevant.

1) Last time I had an internet connection, I updated and emerged a new xinetd. Could this be part of my problem? (I could be way off here, I just don't know.)
2) According to the page on my motherboard, my network card is a Realtek PHY RTL8201CL. Is forcedeth really the driver I want to be using? It just seems weird that things would work up until now...

cjubon · Posted: Sun Nov 18, 2007 7:57 pm Post subject:

Chickencha · n00b Joined: 16 Dec 2006 Posts: 21

cjubon · Posted: Sun Nov 18, 2007 8:08 pm Post subject:

oops sorry

wicki · n00b Joined: 09 Mar 2004 Posts: 70

I am having what I believe to be the same problem here.

Originally I installed Gentoo from a 2004 LiveCD if I remember correctly... I had it plugged in to the 2Wire Modem/Router/Switch that comes with SBC/AT&T DSL service and everything was working fine. Now we have moved, can no longer get this DSL service, so I'm trying to stop using this 2Wire device. I've set up my /etc/conf.d/net to use DHCP and also tried setting it for a static IP, both of which work fine using the other router.

The reaaally strange thing is, I have DHCP service turned on on the new router, and DHCP service turned off on the 2Wire device. And I have a network cable running from the 2Wire router to the new router. New router has same IP as the 2Wire router did have. If I plug the cable in from the Gentoo machine directly to the new router, it does not work. But if I plug it in through the 2Wire device, it is getting an IP address from the new router and it works fine!

Any reason why this would be? It's almost like it is relying on being connected directly to this hardware otherwise it does not want to work!

wicki · n00b Joined: 09 Mar 2004 Posts: 70

Also I forgot to mention, one piece that is slightly different is, when I plug the Gentoo computer into the new switch, the lights LNK lights DO come on.. I just can't ping it from any other computer in the network!

padoor · Advocate Joined: 30 Dec 2005 Posts: 4185 Location: india

it seems like the input impedance buffer dead in your network card.
try with new card.
_________________
reach out a little bit more to catch it (DON'T BELIEVE the advocate part under my user name)