I have 1 ESXi 4.1 host successfully connected to my ReadyNAS 3100, using it's own VLAN, jumbo frames etc and it's running very well. All pings and vmkpings work.
When I try to connect or even ping from my second ESXi 4.1 host to the ReadyNAS I can't get a response (NICS are teamed on the NAS).
I can ping the first hosts NAS vSwitch from the second host and I can even ping a PC also on the NAS VLAN in both directions from the second host so I know the network is fine. I can also manage the NAS and ping from this PC.
Any ideas appreciated.