problem with two realtek 8139 ethernet cards
 

I have two realtek 8139B ethernet cards mounted on Linux SuSE 7.3 server.

It seems that
eth0 (INTERNET) it's working...
eth1(LAN) it's working...

but i have no ping to my LAN
only the first pci slot on my mainboard where is connected the eth0 card it's functioning. All the other one don't want to send and receive packages.

SuSE it's viewing the two of ethernet cards.
ifconfig look like that:



eth0 Link encap:Ethernet HWaddr 00:02:44:57:06:49
inet addr:217.156.106.188 Bcast:217.156.106.191 Mask:255.255.255.224 inet6 addr: fe80::202:44ff:fe57:649/10 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3978 errors:0 dropped:0 overruns:0 frame:0
TX packets:2642 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:910987 (889.6 Kb) TX bytes:296486 (289.5 Kb)
Interrupt:10 Base address:0xc000



eth1 Link encap:Ethernet HWaddr 00:02:44:57:06:60
inet addr:192.168.100.1 Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::202:44ff:fe57:660/10 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:518 errors:0 dropped:0 overruns:0 frame:0
TX packets:78 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:56501 (55.1 Kb) TX bytes:5208 (5.0 Kb)
Interrupt:12 Base address:0xe000



lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:593 errors:0 dropped:0 overruns:0 frame:0
TX packets:593 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:46190 (45.1 Kb) TX bytes:46190 (45.1 Kb)

Does anyone can help me finding a solution?

Are you using DHCP ?
Make sure all the computers on the LAN are obtaining different IP addresses.

Take a look at your routing table, type: route -n

Is your firewall blocking icmp packets ? iptables -L

Can the computers on your LAN ping each other and can they ping the server ?