hi m using fedora 8 ..n m havin two NICs right now...
one is eth0 and the other is eth1..
actually i have installed snort on my lap and i have to use both the ethernet cards by giving them two static ips..

the problem is that when i do ifconfig -a ...its not showing eth1 its showing only eth0....
..can neone tell me how to configure eth1 in linux...

eth1 is just a name created by udev rules when the system is booted. The second nic may be called eth2 or eth3 etc. Try different names to see if you can find out what the second nic is called.

Have a look here, this explains some of how udev works. It is not trivial. -->http://blogs.koolwal.net/2008/04/22/...ux-udev-issue/

Once you have the assigned name, configure the second nic as you did the first.

Hope this helps.

actually i have installed easyids on my machine..it has two nic...using netconfig i configured eth0 and gave it static ip..and for eth1 i manually made entry in /etc/sysconfig/network-scripts/ifcfg-eth1 file..
wen iam typing service network restart...its bringing the eth0 as well as eth1 successfully but wen iam typing ifconfig -a its not showing me eth1......
m not getting now wat shod i do for this..

Are you sure it is still called eth1? If you read the threads I pointed you to, part of the problem is re-naming the hardware interface to something other than ethx. So the config file may work when booted, and then the name can change, do to rules for udev.

If this is not the case, and it is still named eth1, then I'm at a loss to explain why it doesn't show up with a /sbin/ifconfig command.

What does
lspci
say about the devices?

the output of lspci is as follows

[root@easyids1 ~]# lspci
00:00.0 Host bridge: Intel Corporation 82815 815 Chipset Host Bridge and Memory Controller Hub (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82815 Chipset Graphics Controller (CGC) (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 01)
00:1f.0 ISA bridge: Intel Corporation 82801BA ISA Bridge (LPC) (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801BA IDE U100 Controller (rev 01)
00:1f.4 USB Controller: Intel Corporation 82801BA/BAM USB Controller #1 (rev 01)
00:1f.5 Multimedia audio controller: Intel Corporation 82801BA/BAM AC'97 Audio Controller (rev 01)
02:04.0 Ethernet controller: Unknown device 0001:8139 (rev 10)
02:08.0 Ethernet controller: Intel Corporation 82801BA/BAM/CA/CAM Ethernet Controller (rev 01)

Your device is not recognized by any driver currently installed in the system. The device is:

02:04.0 Ethernet controller: Unknown device 0001:8139 (rev 10)

The PCI device ID is 0x8139, which is a Realtek card. But that vendor ID of 0001 doesn't make sense to me. Show output if you could from

lspci -n

the output of lspci -n is as follows...

[root@easyids1 ~]# lspci -n
00:00.0 Class 0600: 8086:1130 (rev 02)
00:02.0 Class 0300: 8086:1132 (rev 02)
00:1e.0 Class 0604: 8086:244e (rev 01)
00:1f.0 Class 0601: 8086:2440 (rev 01)
00:1f.1 Class 0101: 8086:244b (rev 01)
00:1f.4 Class 0c03: 8086:2444 (rev 01)
00:1f.5 Class 0401: 8086:2445 (rev 01)
02:04.0 Class 0200: 0001:8139 (rev 10)
02:08.0 Class 0200: 8086:2449 (rev 01)


m online waitin for ur reply..

i think there is some problem with the driver thing...how will i come to know wats the driver required for it..whether its installed or not...
my /etc/modprobe.conf file is like this...


alias eth0 e100
alias scsi_hostadapter ata_piix
alias snd-card-0 snd-intel8x0
options snd-card-0 index=0
install snd-intel8x0 /sbin/modprobe --ignore-install snd-intel8x0 && /usr/sbin/alsactl restore >/dev/null 2>&1 || :
remove snd-intel8x0 { /usr/sbin/alsactl store >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-intel8x0
alias usb-controller uhci-hcd

ya finally i got it working...i typed lsmod and saw that e100 and 8139too drivers were there in system for the ethernet cards...so i added one line in /etc/modprobe.conf file and ifconfig started showing eth1..
thanks for ur cooperation...

well the line is
alias eth1 81390too

Well done, thanks for coming back and sharing the solution!


Cheers,
Tink

well i have got to learn a lot from this forum...whenever i had problem i have successfully got my solution here ..
so thanx a lot to u all for the support..