[CentOS] Basic Network question pinging different subnets

Bob Metelsky bobmetelsky at comcast.net
Sat Nov 17 00:25:11 UTC 2007


Hi Im a little perplexed by this situation

I have centos 4.5 installed on 2 pcs - each with 2 network cards

machine 1

eth0      Link encap:Ethernet  HWaddr 00:14:2A:6B:C8:CC
          inet addr:10.54.7.2  Bcast:10.54.7.255  Mask:255.255.255.0
         
eth1      Link encap:Ethernet  HWaddr 00:11:50:9B:A2:90
          inet addr:10.54.0.2  Bcast:10.54.0.255  Mask:255.255.255.0

machine 2

eth0      Link encap:Ethernet  HWaddr 00:14:2A:69:4C:47
          inet addr:10.54.7.3  Bcast:10.54.7.255  Mask:255.255.255.0

eth1      Link encap:Ethernet  HWaddr 00:11:50:9B:A5:0A
          inet addr:10.54.0.3  Bcast:10.54.0.255  Mask:255.255.255.0
 

machine 1 & 2 can ping each other  on either subnets

machine 3 (windows)...

C:\>ipconfig

        Connection-specific DNS Suffix  . :
        IP Address. . . . . . . . . . . . : 10.54.7.16
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 10.54.7.1

cant ping anything on the 10.54.0 subnet, nor does that subnet show up 
ip using a port scanner...

C:\>ping 10.54.0.2

Pinging 10.54.0.2 with 32 bytes of data:
Request timed out.
Request timed out.

C:\>ping 10.54.7.2

Pinging 10.54.7.2 with 32 bytes of data:
Reply from 10.54.7.2: bytes=32 time<1ms TTL=64
Reply from 10.54.7.2: bytes=32 time<1ms TTL=64


Any ideas why this is happening? I dont have a firewall on the 10.54 
address,

Thanks
Bob






More information about the CentOS mailing list