LinuxQuestions.org
Visit the LQ Articles and Editorials section
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Networking
User Name
Password
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

Notices

Reply
 
Search this Thread
Old 01-24-2005, 06:35 PM   #1
drdarkman
LQ Newbie
 
Registered: Jan 2005
Location: virginia beach
Distribution: fedora core 5
Posts: 12

Rep: Reputation: 0
ifconfig eth0


ok, so i'm pretty new to linux and all so any help would be appreciated. just recently my friend setup a router at our apartment so we can both have internet in our rooms. when i open the terminal and do an ifconfig eth0, it says "no device found". so i tried to set it up through the network config window, but i couldn't find my nic card in there. The ifconfig is a local address that is 127.0.0.1. with a subet of 255.0.0.0. but before the router was installed i would move the cable modem into my room whenever i needed to use the internet. and it would work prefectly fine. now that the router is up it started doing this. i have no idea on what to do. i also do a "service dhcpd start" just to make sure. PLEASE HELP!!
 
Old 01-30-2005, 09:21 AM   #2
Matir
Moderator
 
Registered: Nov 2004
Location: San Jose, CA
Distribution: Ubuntu
Posts: 8,507

Rep: Reputation: 118Reputation: 118
How was the cable mode connected? Ethernet? It looks like your computer is not finding that it has a network card: what kind of network card does it have? Is support for it compiled into the kernel, or is the appropriate module loaded?
 
Old 01-30-2005, 11:16 AM   #3
ghazz
Member
 
Registered: Jan 2005
Location: Akron, OH
Distribution: Slackware 10
Posts: 32

Rep: Reputation: 15
Did your friend set up both computers for the router?? Am assuming Red hat for you, does he/she also use Linux? Which distro, if so. Can your friend's computer get out on the net? Are you using the command line or a GUI on your Linux box? Ethernet or Wireless?? How many ports on the router? >SSN, birthdate, address, and major credit card?< heh Just kidding!

Things to check...

Check if any lights show up on the nic. See if the Router light shows for your connection. Mind you, there should be atleast 2 lan lights showing, unless your friend has shutdown his/her computer.

No lights on either end of your connection?

I would first, check the connection, if connected by ethernet cable, at the router and your nic card to make sure it is secure. Check for severe pinches(like "V" shaped or worse) in the ethernet cable as well(if you are able). Are you using new ethernet cable, if so, is the cable cat5 or another category, suitable for your network? Hopefully there are no length issues; if so you may need a repeater to push the signal to your system. The longest I've used is 25' w/o one, I don't know beyond.

If all checks, I would setup the modem again to see if it will run on your machine minus the router, basically as you had it set up. If it works, I feel either the router may not be correctly setup to see both computers or your computer is not setup correctly for the router.

Lights on one end, but not the other end of your connection.

Kink in the cable or broken, other networking equipment necessary to carry the signal, port blown on the router or PCI/ISA slot blown on the motherboard, and I'm sure other problems that I am missing...

Lights on both ends of your connection -- regardless of color?

Configuration problem. Don't know how incompatible hardware acts on Linux boxes though.

Quite honestly, if the modem worked before with your computer, and the router was setup correctly, the problem sounds like a loose connection on your nic's end OR the router end(this could also include the length issue or kinks, I mentioned). I am, of course, assuming you are using the ethernet rather than wireless.

-g
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
ifconfig eth0 drdarkman Linux - Networking 1 01-24-2005 10:40 PM
ifconfig eth0 up Thorkyl Linux - Networking 6 06-29-2004 02:43 AM
eth0 not running ifconfig calderonr Linux - Networking 1 01-16-2004 01:14 AM
eth0 removed from ifconfig after dhcpcd eth0 johnklvr Linux - Networking 3 01-15-2004 08:21 PM
ifconfig.eth0 incomplete? Bert Linux From Scratch 13 11-04-2002 07:45 PM


All times are GMT -5. The time now is 12:59 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration