Unable to activate Ethernet Card

[dcf fcd]

Hello everyone,
                    I have Fedora Core2 Test 2 installed in my
computer. It is detecting my LAN card ( NVIDIA nForce MCP Networking
Adapter). But I am not able to activate my LAN card. The LAN card is
working fine b'cos I am able to access LAN in windows. I have no idea
what is the problem. I'll be very grateful if somebody can help me.
                                                   Thanks,
                                                              dcffcd

[Andrey Andreev]

dcf fcd wrote:
> Hello everyone,
>                     I have Fedora Core2 Test 2 installed in my
> computer. It is detecting my LAN card ( NVIDIA nForce MCP Networking
> Adapter). But I am not able to activate my LAN card. The LAN card is
> working fine b'cos I am able to access LAN in windows. I have no idea
> what is the problem. I'll be very grateful if somebody can help me.
>                                                    Thanks,
>                                                               dcffcd

What is detecting your LAN card?

Try

/sbin/modprobe forcedeth

as root. Than you shall be able to do
    
    /sbin/ifconfig eth0 up

You may need to substitute eth1 for eth1 if you have more than one 
network adapter. You may also need to pass more options to ifconfig if 
you are not using DHCP. Read man infconfig for more info.

If you your network works now, add

alias eth0 forcedeth

to your /etc/modprobe.conf and the module will be loaded on each boot.

Greets,

//Andro

[Chadley Wilson]

On Tuesday 28 September 2004 16:02, dcf fcd wrote:
> Hello everyone,
>                     I have Fedora Core2 Test 2 installed in my
> computer. It is detecting my LAN card ( NVIDIA nForce MCP Networking
> Adapter). But I am not able to activate my LAN card. The LAN card is
> working fine b'cos I am able to access LAN in windows. I have no idea
> what is the problem. I'll be very grateful if somebody can help me.
>                                                    Thanks,
>                                                               dcffcd

Hi There,
run lspci and the lsmod on the command line as root (su -)
comapred the output of lspci for your lan and see if there is the correct 
module loaded. If not cd into the /usr/src/linux/drivers dir or 
the /lib/modules/ dir and look for the corect driver, 
use modprobe driver to test.
If you run ifconfig does it have an IP address.
also check the /etc/sysconfig/network-scripts/ifcfg-eth? file
it should look like this:

You could just use mine as a sample and edit according to you network:

# Broadcom Corporation|BCM4401 100Base-T
DEVICE=eth0
BOOTPROTO=static
BROADCAST=192.168.2.255
HWADDR=00:C0:9F:3A:85:89
IPADDR=192.168.2.5
NETMASK=255.255.255.0
NETWORK=192.168.2.0
ONBOOT=yes
TYPE=Ethernet

Then run service network restart and try again.
If you still can't win try service iptables off
if that fixes it the you need to setup your iptables
That quite easy for ping you use icmp, nfs uses udp and most others use tcp
then add a line like this to your /etc/sysconfig/iptables file

-A INPUT -m icmp -p icmp -i eth0 -j ACCEPT
and to ping out
-A OUTPUT -m icmp -p icmp -o eth0 -j ACCEPT
you can also use it for a specific service like nfs
-A INPUT -i eth0 -m udp -p udp --dport 2049 -j ACCEPT
-A INPUT -i eth0 -m tcp -p tcp --dport 2049 -j ACCEPT

That because nfs actually uses tcp and udp,
playaround with it.
in the /etc/services file you find the ports to services mappings
good luck!

[Pasha R]

On Tue, 2004-09-28 at 16:02, dcf fcd wrote:
> Hello everyone,
>                     I have Fedora Core2 Test 2 installed in my
> computer. It is detecting my LAN card ( NVIDIA nForce MCP Networking
> Adapter). But I am not able to activate my LAN card. The LAN card is
> working fine b'cos I am able to access LAN in windows. I have no idea
> what is the problem. I'll be very grateful if somebody can help me.
>                                                    Thanks,
>                                                               dcffcd

Can you describe how do you activate your card and what messages you
see?

Pavel.

[dcf fcd]

Hi, 
    Thanks for all the tips. But there is no change yet.One thing
though. I tried activating the lan card from the terminal using
/sbin/ifconfig eth0 up and it worked the first time. I had also
removed all my firewalls before doing this. The lan card got activated
and I was able to connect to the net. After that I rebooted and its
gone again. And none of the methods suggested worked.And all my other
settings are fine the network scripts file is also ok.
                       Please suggest a way out. 
Greets
dcffcd

On Tue, 28 Sep 2004 19:32:47 +0530, dcf fcd  wrote:
> Hello everyone,
>                    I have Fedora Core2 Test 2 installed in my
> computer. It is detecting my LAN card ( NVIDIA nForce MCP Networking
> Adapter). But I am not able to activate my LAN card. The LAN card is
> working fine b'cos I am able to access LAN in windows. I have no idea
> what is the problem. I'll be very grateful if somebody can help me.
>                                                   Thanks,
>                                                              dcffcd

[Kevin Cummings]

dcf fcd wrote:
> Hi, 
>     Thanks for all the tips. But there is no change yet.One thing
> though. I tried activating the lan card from the terminal using
> /sbin/ifconfig eth0 up and it worked the first time. I had also

In order for you to be able to ifconfig the connection up, you must have 
the proper ethernet modules loaded, or at least configured in 
/etc/modprobe.conf.  That's good.  That's 50% of the battle.  Now, why 
can't you use system-config-network to configure the (now working) 
ethernet card to active at boot time?  [From the GUI, click the Fedora 
-> System Tools -> Network Device Control   From there, select your 
ethernet device and push the "Configure..." button, (supply your root 
password, if necessary), select your device in the Network Configuration 
window, and push the "Edit" button in the toolbar.  Check the box that 
reads: "Activate device when the computer starts"]
> removed all my firewalls before doing this. The lan card got activated
> and I was able to connect to the net. After that I rebooted and its
> gone again. And none of the methods suggested worked.And all my other
> settings are fine the network scripts file is also ok.
>                        Please suggest a way out.

[Jon Savage]

> In order for you to be able to ifconfig the connection up, you must have
> the proper ethernet modules loaded, or at least configured in
> /etc/modprobe.conf.  That's good.  That's 50% of the battle.  Now, why
> can't you use system-config-network to configure the (now working)
> ethernet card to active at boot time?  [From the GUI, click the Fedora
> -> System Tools -> Network Device Control   From there, select your
> ethernet device and push the "Configure..." button, (supply your root
> password, if necessary), select your device in the Network Configuration
> window, and push the "Edit" button in the toolbar.  Check the box that
> reads: "Activate device when the computer starts"]

You also might want to check 'allow all users to enable & disable the
device' option especially if there are multiple NICs on the machine.
This is especially useful on laptops where there is both a wireless &
wired NIC, I've got mine set up to start neither on boot since having
the default eth interface unavailable on boot will cause a significant
delay on boot. I use the network device control applet to bring
up/down as required.