Host connection and Power state in ESXi 5.0

Hello everybody,

I have one clsuter running in one V Center after that i am creating anothere DR cluster in same Vcenter with three host: VMware ESX 5.0 ( Three Host )

My problem is: after I am adding those hosts getting alarm " Alarm Host connection and power state" every 5 Min in newly instlled three host only after that three Host are getting disconnected

I check DNS, IP/mask, gateway, cable,etc....nothing, Iam also able to ping those server and able to do NSlookup but this error is not gowing. also confuigure HA cluster Again* three times )

Thanks,

TechExpert