• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1575
  • Last Modified:

Setting up a network and internet connection with Road Runner and a Linxsys router.

The Linksys router is a "broadband router" with 2 phone ports. It has 1 internet connection port and 3 network connection ports. 2 of the 3 ports are connected to windows XP Home computers both connected to a network. The 3rd computer is a laptop running linux Fedora core 5 newly installed.

I've been fooling around with the networking for a couple days reading articles online without any luck connecting to the internet or pinging my local computers.

I CAN ping and the IP of the computer on the network

The router IP and administration is
The subnet mask is set to

XP Home 1 has an IP address of
XP Home 2 has an IP address of
FC5 has an IP address of (but the router doesn't see it as connected in the connections list on the router itself)

The NIC card is a microsoft mn120 card - FC5 is useing the "intel corporation 82557/8/9 [Ethernet Pro 100]" driver - the status is OK. The IRQ is "unknown" however - not sure if that matters.

When I do

#ifconfig -a

I get (I have to hand type this so I wont include lo and sit0):

eth0 Link encap:Ethernet HWaddr 00:10:A4:96:B0:94
       inet addr:   Bcast:   Mask:
       UP BROADCAST MULTICAST   MTU:1500   Metric:1
       RX packets:0 erros:0 dropped:0 overruns:0 frame:0
       TX packets:0 erros:0 dropped:0 overruns:0 carrier:0
       collisions:0 txqueuelen:1000
       RX bytes:0 (0.0 b)   TX bytes:0 (0.0 b)

lo    looks ok with "inet addr:   Mask:

sit0  is the dialup modem I believe.

#netstat -rn
Kernal IP routing table
Destination        Gateway            Genmask            Flags     MSS  Window     irtt   Iface         U               0  0                 0   eth0            U               0  0                 0   eth0                   UG             0  0                 0   eth0

/etc/hosts        localhost        dr34m3r




On #service network restart there are no errors.

on #ping (anything other than or -c 5   I get a "Destination Host Unreachable" error.

The NIC works (at least with XP) but I'm not sure if the driver is right or about the "unknown" IRQ setting - or if that even makes a difference.

Any help or ideas would be much appreciated. I'd like to be able to access the internet but stay behind the router.

Thank you very much.

Best regards,

  • 7
  • 5
1 Solution
The router IP is  You're setting your gateway to  That won't work - the router isn't advertising that address.

Change your gateway to
dr34m3rsAuthor Commented:
I made that change in the /etc/sysconfig/network-scripts/ifcfg-eth0 file





#service network restart

Restarted ok.

Ping worked.

Ping worked.

Ping failed.
Can you ping one XP Home PC from the other, and can you ping the Linux box from either of the XP Home PCs?  Can you ping from the FC box? Can you try setting the FC box to use DHCP?
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

dr34m3rsAuthor Commented:
From XP 1 - I can ping through but not
From XP 2 - I can ping through but not

From FC5 box I cannot ping

I have tried DHCP but was unable to get that to work. I receive a message like "Determining IP...  " after a few seconds "Failed. Check cable?"

I would like to use DHCP as my router uses that method for the win XP boxes... maybe the router doesn't "see" the new network IP because it want to determine that for itself? But than why would DHCP fail on the FC box (unless there's a DHCP config step I'm missing which is possible)?

Thank you very much for your help in this matter.

It seems more like a physical connection problem.  Have you tried a different cable, or a different port?
dr34m3rsAuthor Commented:
I have tried a different cable and a different port.

The NIC worked on an XP setup - I'm thinking about trying another type of NIC on it.
That would be my next suggestion.  

Did you check around to make sure you have the latest-and-greatest driver for the integrated NIC?
dr34m3rsAuthor Commented:
It's a microsoft mn120 NIC card on a laptop. I remember it wouldn't work with the basic drivers for windows XP when I installed it. I will try another card as I'm sure there are no drivers that support it (at least I can't find any)
dr34m3rsAuthor Commented:
I will install the new wireless network card, router, and reinstall my software. I'll let you know the outcome.
dr34m3rsAuthor Commented:
Solution: After fiddling with the wireless networking in linux without success, I purchased a copy of windows XP Home, installed it, and like magic everything worked.
I didn't know that this was wireless.  Everything you mentioned throughout until your second-to-last post didn't say anything about wireless, and looked/felt like you were doing a wired Ethernet connection.

Depending on how your wireless was configured, you may have had an issue not with the wireless card itself or with the network setup, but with the wireless supplicant and how *it* was configured.
dr34m3rsAuthor Commented:
"microsoft mn120 NIC" <--- is a wired NIC

"I will install the new wireless network card, router, and reinstall my software. I'll let you know the outcome."

It was wired till that didn't work.

I didn't bother fooling around much with the wireless.


Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

  • 7
  • 5
Tackle projects and never again get stuck behind a technical roadblock.
Join Now