HI Friends, Normaly im using 1 NIC in my system for broad band net connection. but when i add another NIC for my home networking its become collapsed, i cant to do anythin through both NIC 's.i lost internet connection. if i remove the 2NIC (eth1) no problem to net activation. both NIC 's are activated. im using diffeent class of networks for Both NIC's.eth0's ip is 192.168.1.10, eth1's ip 192.168.0.1. in case of home network when i connect the cable LED's are lightening but pinging is not possible through both NIC. i tried best but couldnt got an idea... results of some commands follows.. command ifconfig eth0 Link encap:Ethernet HWaddr 00:E0:4D:04:9F:B3 inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::2e0:4dff:fe04:9fb3/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:360 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:32006 (31.2 KiB) Interrupt:3 Base address:0x1400 eth1 Link encap:Ethernet HWaddr 00:E0:4C:08:22:D3 inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::2e0:4cff:fe08:22d3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:252 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:25526 (24.9 KiB) Interrupt:5 Base address:0x1800 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:43365 errors:0 dropped:0 overruns:0 frame:0 TX packets:43365 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:53291106 (50.8 MiB) TX bytes:53291106 (50.8 MiB) command /sbin/route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 * 255.255.255.0 U 0 0 0 eth0 192.168.0.0 * 255.255.255.0 U 0 0 0 eth1 169.254.0.0 * 255.255.0.0 U 0 0 0 eth1 output of command lsmod Module Size Used by nfsd 204385 9 exportfs 7617 1 nfsd lockd 63977 2 nfsd parport_pc 24705 0 lp 12077 0 parport 37129 2 parport_pc,lp autofs4 23237 0 i2c_dev 11329 0 i2c_core 22081 1 i2c_dev sunrpc 157093 19 nfsd,lockd ipt_REJECT 6593 1 ipt_state 1857 1 ip_conntrack 40949 1 ipt_state iptable_filter 2753 1 ip_tables 16833 3 ipt_REJECT,ipt_state,iptable_filter md5 4033 1 ipv6 232705 20 vfat 14529 2 fat 44257 1 vfat dm_mod 54741 0 button 6481 0 battery 8901 0 ac 4805 0 uhci_hcd 31065 0 snd_maestro3 23273 3 snd_ac97_codec 63889 1 snd_maestro3 snd_pcm_oss 49017 0 snd_mixer_oss 17985 3 snd_pcm_oss snd_pcm 96841 2 snd_maestro3,snd_pcm_oss snd_timer 29893 1 snd_pcm snd_page_alloc 9673 1 snd_pcm snd 54949 8 snd_maestro3,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer soundcore 9889 3 snd 8139too 25921 0 mii 4673 1 8139too floppy 58481 0 ext3 116809 3 jbd 71257 1 ext3 ping 192.168.1.1 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. From 192.168.1.10 icmp_seq=1 Destination Host Unreachable From 192.168.1.10 icmp_seq=2 Destination Host Unreachable From 192.168.1.10 icmp_seq=3 Destination Host Unreachable --- 192.168.1.1 ping statistics --- 7 packets transmitted, 0 received, +3 errors, 100% packet loss, time 5999ms , pipe 4 I expect ur kind help..... Thanking u...... karayil kingdom

I think you may need to set the the net interface as the default route; route add default eth0

Hi gurrug... Still problem some dtails are follows. ifconfig eth0 Link encap:Ethernet HWaddr 00:E0:4D:04:9F:B3 inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::2e0:4dff:fe04:9fb3/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:457 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:46451 (45.3 KiB) Interrupt:3 Base address:0x1400 eth1 Link encap:Ethernet HWaddr 00:E0:4C:08:22:D3 inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::2e0:4cff:fe08:22d3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:415 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:43931 (42.9 KiB) Interrupt:5 Base address:0x1800 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:116230 errors:0 dropped:0 overruns:0 frame:0 TX packets:116230 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:45138544 (43.0 MiB) TX bytes:45138544 (43.0 MiB) route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 * 255.255.255.0 U 0 0 0 eth0 192.168.0.0 * 255.255.255.0 U 0 0 0 eth1 169.254.0.0 * 255.255.0.0 U 0 0 0 eth1 default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 default 192.168.0.254 0.0.0.0 UG 0 0 0 eth1 [root@Tiamo ~]# route add -net default gw 192.168.1.1 [root@Tiamo ~]# ping 192.168.1.1 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. From 192.168.1.10 icmp_seq=0 Destination Host Unreachable From 192.168.1.10 icmp_seq=1 Destination Host Unreachable From 192.168.1.10 icmp_seq=2 Destination Host Unreachable From 192.168.1.10 icmp_seq=4 Destination Host Unreachable From 192.168.1.10 icmp_seq=5 Destination Host Unreachable From 192.168.1.10 icmp_seq=6 Destination Host Unreachable --- 192.168.1.1 ping statistics --- 10 packets transmitted, 0 received, +5 errors, 100% packet loss, time 9002ms , pipe 5 /etc/resolv.conf search . nameserver 192.168.1.1 nameserver 61.1.96.69 nameserver 192.168.0.1 service network restart Shutting down interface eth0: [ OK ] Shutting down interface eth1: [ OK ] Shutting down loopback interface: [ OK ] Setting network parameters: [ OK ] Bringing up loopback interface: [ OK ] Bringing up interface eth0: [ OK ] Bringing up interface eth1: [ OK ] ping 192.168.0.254 PING 192.168.0.254 (192.168.0.254) 56(84) bytes of data. From 192.168.0.1 icmp_seq=0 Destination Host Unreachable From 192.168.0.1 icmp_seq=1 Destination Host Unreachable From 192.168.0.1 icmp_seq=2 Destination Host Unreachable From 192.168.0.1 icmp_seq=3 Destination Host Unreachable From 192.168.0.1 icmp_seq=4 Destination Host Unreachable From 192.168.0.1 icmp_seq=5 Destination Host Unreachable From 192.168.0.1 icmp_seq=6 Destination Host Unreachable From 192.168.0.1 icmp_seq=7 Destination Host Unreachable --- 192.168.0.254 ping statistics --- 9 packets transmitted, 0 received, +8 errors, 100% packet loss, time 8001ms , pipe 4 Expect ur help.... Thanking u... karayil kingdom