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 127.0.0.1 and the IP of the computer on the network 192.168.15.4.

The router IP and administration is 192.168.15.1
The subnet mask is set to 255.255.255.0

XP Home 1 has an IP address of 192.168.15.2
XP Home 2 has an IP address of 192.168.15.3
FC5 has an IP address of 192.168.15.4 (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:192.168.15.4   Bcast:192.168.15.255   Mask:255.255.255.0
       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:127.0.0.1   Mask: 255.0.0.0

sit0  is the dialup modem I believe.


#netstat -rn
Kernal IP routing table
Destination        Gateway            Genmask            Flags     MSS  Window     irtt   Iface
192.168.15.0     0.0.0.0              255.255.255.0     U               0  0                 0   eth0
169.254.0.0       0.0.0.0              255.255.0.0        U               0  0                 0   eth0
0.0.0.0              192.168.15.254  0.0.0.0               UG             0  0                 0   eth0



/etc/hosts
127.0.0.1        localhost        dr34m3r

/etc/sysconfig/network
NETWORKING=yes
HOSTNAME=dr34m3r
FORWARD_IPV4=no

/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.15.4
NETMASK=255.255.255.0
GATEWAY=192.168.15.254

/etc/resolv.conf
nameserver 192.168.15.1

On #service network restart there are no errors.

on #ping (anything other than 127.0.0.1 or 192.168.15.4) -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,

Dr34m3r
LVL 1
dr34m3rsAsked:
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ShineOnCommented:
The router IP is 192.168.15.1.  You're setting your gateway to 192.168.15.254.  That won't work - the router isn't advertising that address.

Change your gateway to 192.168.15.1.
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dr34m3rsAuthor Commented:
I made that change in the /etc/sysconfig/network-scripts/ifcfg-eth0 file

Changed

GATEWAY=192.168.15.254

to

GATEWAY=192.168.15.1


#service network restart

Restarted ok.

Ping 127.0.0.1 worked.

Ping 192.168.15.4 worked.

Ping 192.168.15.3 failed.
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ShineOnCommented:
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 192.168.15.1 from the FC box? Can you try setting the FC box to use DHCP?
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dr34m3rsAuthor Commented:
From XP 1 - I can ping 192.168.15.1 through 192.168.15.3 but not 192.168.15.4
From XP 2 - I can ping 192.168.15.1 through 192.168.15.3 but not 192.168.15.4

From FC5 box I cannot ping 192.168.15.1

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.

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ShineOnCommented:
It seems more like a physical connection problem.  Have you tried a different cable, or a different port?
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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.
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ShineOnCommented:
That would be my next suggestion.  

Did you check around to make sure you have the latest-and-greatest driver for the integrated NIC?
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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)
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dr34m3rsAuthor Commented:
I will install the new wireless network card, router, and reinstall my software. I'll let you know the outcome.
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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.
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ShineOnCommented:
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.
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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.

Thanks!
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