eth0 is detected, but can't ping, can't access the inernet

[majik]

Hello...I'm using RedHat Linux (8.0, 2.4.18-14 kernel) for the first time. It finished installed w/o a problem, except I can't get the NIC card to work. Linux Ethernet - HowTo ( http://www.tldp.org/HOWTO/Ethernet-HOWTO-4.html#ss4.1 ) lists my 3com 3c905C card and states "Status: Supported, Driver Name: 3c59x." In the hardware tab in Network Configurations the card is listed as "3Com 3c590/3c595/3c90x/3c980." The status of it in the Devices tab specifies it as active. No other cards are listed or installed. When booting, I get "Bringing up interface eth0... [OK]". (It doesn't get OK'ed if I have it get an IP dynamically. It's OK'ed only when I specify an IP for it). Everything seems fine to me, yet I can't access any websites.

I searched these threads and came across the following:
http://www.linuxforums.org/viewtopic.php?t=498

the gui's for network config aren't always that good, try doing it command line style, first, check to see if the card is initialized with `/sbin/ifconfig eth0` to find out if it has gotten an IP address already, and/or if it is working/initialized. If it is not in there, type `/sbin/lsmod` to find out if the module is loaded

/sbin/ifconfig eht0 does display the IP I assigned to it. However, I can't ping it

/sbin/lsmod does display the nic's model

I've been messing around w/ this for a while now since last night. Anything else you guys suggest? Or something I'm overlooking?

[Dolda2000]

However, I can't ping it

You do mean that you can't ping the NIC's address itself, right?
Could you post the output of "/sbin/route -n" here along with the card's IP address?
Also, check to see that the flags of eth0 (the third line of the ifconfig output) include the UP flag.

[majik]

I was stubborn in not trying another NIC card b/c everything seemed to be fine, but while I was gone my brother tried a RealTek. Lo and behold, its now working properly (as far as we know).

Dolda2000, I read your post after swapping NIC's, but here's the output for /sbin/route -n (w/ the RealTek):

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0

awol from #redhat in efnet had also asked me to try that command last night and as I recall, the output was pretty much idential.

As I already mentioned, it's working now with a different card. Just still curious what was the problem to begin with .

[kianoosh49]

I am sure you are not gonna believe that. Just type
ifdown eth0 and ifup eth0 . This is the whole thing you need to do. If you type ifconfig now, you will see your ip address configured there correctly.
GOOD LUCK !

I was stubborn in not trying another NIC card b/c everything seemed to be fine, but while I was gone my brother tried a RealTek. Lo and behold, its now working properly (as far as we know).

Dolda2000, I read your post after swapping NIC's, but here's the output for /sbin/route -n (w/ the RealTek):

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0

awol from #redhat in efnet had also asked me to try that command last night and as I recall, the output was pretty much idential.

As I already mentioned, it's working now with a different card. Just still curious what was the problem to begin with .