Issue with ethernet interface


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Operating Systems Linux Issue with ethernet interface
# 1  
Issue with ethernet interface

hello,
I have a Linux server with two interfaces eth0 and eth1. I configured two IP addresses from two different networks on 2 interfaces, and I connected both interfaces on two different switches.
the IP address of eth0 is responding without problem to ping from equipment of its home network, unfortunately this is not the case for the IP address of eth1. a moment I thought the problem was on the switch, but when I try to connect another device on the same switch port, this device can communicate with others on the same network. LEDs are lit, but impoosible to ping the IP address of eth1.
suddenly I thought to myself that maybe the problem come from the IP configuration on the interface eth1, or within the system that I do not control too.
well, I have to ask you for help to solve this problem.

thank you in advance for any contribution
# 2  
Can you post the output of iproute2 for both NICs? (or ifconfig)
# 3  
please find below:
Code:
# ifconfig
eth0      Link encap:Ethernet  HWaddr BC:30:5B:DD:74:85  
          inet addr:10.10.136.10  Bcast:10.10.136.63  Mask:255.255.255.192
          inet6 addr: fe80::be30:5bff:fedd:7485/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:958930034 errors:0 dropped:0 overruns:0 frame:0
          TX packets:908460231 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3502945506 (3.2 GiB)  TX bytes:1823145506 (1.6 GiB)
          Interrupt:122 Memory:d6000000-d6012800 

eth2      Link encap:Ethernet  HWaddr BC:30:5B:DD:74:89  
          inet addr:10.6.0.50  Bcast:10.6.0.63  Mask:255.255.255.192
          inet6 addr: fe80::be30:5bff:fedd:7489/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:41045618 errors:0 dropped:0 overruns:0 frame:0
          TX packets:43175495 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1277189174 (1.1 GiB)  TX bytes:3964630437 (3.6 GiB)
          Interrupt:138 Memory:da000000-da012800 

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:305799777 errors:0 dropped:0 overruns:0 frame:0
          TX packets:305799777 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1118219267 (1.0 GiB)  TX bytes:1118219267 (1.0 GiB)

w1g1      Link encap:Point-to-Point Protocol  
          UP POINTOPOINT RUNNING NOARP  MTU:1500  Metric:1
          RX packets:2403556724 errors:0 dropped:0 overruns:360 frame:360
          TX packets:361120954 errors:0 dropped:0 overruns:941 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:3423030701 (3.1 GiB)  TX bytes:1559940032 (1.4 GiB)
          Interrupt:177 Memory:f90c0000-f90c1fff 
#


Last edited by cerco; 02-18-2014 at 09:55 AM..
# 4  
Well, there is no eth1. All the other NICs have traffic shown for RX and TX. If you are talking about eth2, have you checked the routing settings or do you ping from the same network?
# 5  
yes it's eth2, and I ping from the same network (10.6.0.0)
# 6  
What is the IP of the system you are pinging the server with?
# 7  
Very basic but missing information: have you correctly set their hostnames in /etc/hosts , that must be different if you dont want serious issues and each interface should have their correct GW set also... or were you just testing using IP which would not change the fact that each Network should have its correct default gateway...
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