I am running ESXi 5.1U1. Ran a crossed a weird issue where whenever the ESXi host is rebooted I cannot ping the host. The only way to fix this is by changing the IP address to DHCP and then back to static.
Also, any VM's that are vmotioned off or to this host run into issues like missing gateway IP addresses. The vcenter appliance server wont respond to pings unless i remove the adapter and then re-add it.
Not sure if its an issue with the NIC itself or the switches these hosts are plugged into. Any ideas?