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Old 07-20-2013, 09:43 AM   #1
Terminator3000
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Registered: Jun 2012
Distribution: Centos 6 & Fluxbox
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2 Static IP Network devices working individually but not together


Background:

I am setting up two devices with Static IPs and channel bonding them into one,
I installed the new card and set it up correctly with a Static IP and it works fine on its own, ping, browse etc BUT

When I have both cards enabled and try to use the new one it fails to connect.

Additionally, to get the new card working I have to disable the original one in the bios.

The parameters in both ifcfg-eth0 and ifcfg-eth1 seem to be correct and this is born out by the fact that both cards work on their own.

Ifconfig output:


eth0 Link encap:Ethernet HWaddr 6C:F0:49:09:47:17
inet addr:192.168.0.100 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::6ef0:49ff:fe09:4717/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:63155 errors:0 dropped:0 overruns:0 frame:0
TX packets:46605 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:67511519 (64.3 MiB) TX bytes:6817982 (6.5 MiB)

eth0:1 Link encap:Ethernet HWaddr 6C:F0:49:09:47:17
inet addr:192.168.0.110 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

eth1 Link encap:Ethernet HWaddr 00:C0:49:F4:272
inet addr:192.168.0.105 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::2c0:49ff:fef4:27d2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:603 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:100380 (98.0 KiB) TX bytes:636 (636.0 b)


The eth0:1 is a Virtual Device I created earlier.

Thanks.
 
Old 07-20-2013, 11:45 AM   #2
Terminator3000
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Registered: Jun 2012
Distribution: Centos 6 & Fluxbox
Posts: 86

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To add, pinging the devices IP address works fine, but when I try to use the new device on its own with the original still active, it fails.

Ping output: 2 devices with separate static IPs

anton.Centos.~>ping 192.168.0.100
PING 192.168.0.100 (192.168.0.100) 56(84) bytes of data.
64 bytes from 192.168.0.100: icmp_seq=1 ttl=64 time=0.031 ms
64 bytes from 192.168.0.100: icmp_seq=2 ttl=64 time=0.026 ms
64 bytes from 192.168.0.100: icmp_seq=3 ttl=64 time=0.023 ms
64 bytes from 192.168.0.100: icmp_seq=4 ttl=64 time=0.022 ms
64 bytes from 192.168.0.100: icmp_seq=5 ttl=64 time=0.024 ms

--- 192.168.0.100 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3999ms
rtt min/avg/max/mdev = 0.022/0.025/0.031/0.004 ms
anton.Centos.~>ping 192.168.0.105
PING 192.168.0.105 (192.168.0.105) 56(84) bytes of data.
64 bytes from 192.168.0.105: icmp_seq=1 ttl=64 time=0.025 ms
64 bytes from 192.168.0.105: icmp_seq=2 ttl=64 time=0.013 ms
64 bytes from 192.168.0.105: icmp_seq=3 ttl=64 time=0.013 ms
64 bytes from 192.168.0.105: icmp_seq=4 ttl=64 time=0.023 ms
64 bytes from 192.168.0.105: icmp_seq=5 ttl=64 time=0.020 ms

--- 192.168.0.105 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3999ms
rtt min/avg/max/mdev = 0.013/0.018/0.025/0.007 ms

I wonder if the Virtual Device I created from the original has anything to do with it.
 
  


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