Red Hat

Hi,

Here is the issue: There are 2 identical systems in the same subnet here. They can ping and ssh each other. One can ping the default gateway and one can not with error '... icmp_seq Destination Host Unreachable'. I can't find any difference between the two systems in terms of network configuration (other than their own IPs).

How can I troubleshoot this issue? Please share your experiences. Thank you much in advance!

Nick

Did you bring the interface up.

Also if issue remains try different port. If using eth0, try eth1.

ikn3, thanks a lot for the hint.

'ping -I eth0 ip' is not working.
'ping -I eth1 ip' is working.

How do I determine which interface is the default one that ping uses?

Thanks!

you could try the following:

Code:

ping -R ipaddress

which should show something like this as part of the summary heading output:

Code:

NOP
RR:     xx.xx.xx.14
        yy.yy.yy.2
        zz.zz.zz.82
        yy.yy.yy.2
        xx.xx.xx.14

Which shows the route that the ping is taking and from this which interface (whichever interface is configured with xx.xx.xx.14) is being used.

Hello,

Please past "route -n" command for both system.