I have a handful of machines connected to a switch. Most of them can ping the server that's connected to the same switch but a couple can not.
The network interface of the machine in question is up/up and seems to be configured correctly (ran ethtool eth0) but when I ping the server, I get destination host unreachable and 100% packet lost.
Everything is configured with static IPs. I verified the obvious - swapped cables and ruled out IP/mac conflicts. The ports on the switch are enabled.
Each machine has a route setup for the subnet to correct adapter ( 192.XXX.XXX.0 -> eth0)
The other 3 interfaces are bridged - I tried shutting off the bridge as a sanity check but that didn't affect anything (as expected).
Traceroute shows only 1 hop : machineName (IP) 3061.260 ms H! 3069.321 ms H! 3071.245 ms H!
I know it's a pretty broad question but how do i diagnose this?