Thanks LucD.
But the ESXi hosts doesnt have IP address. So i cannot connect with PowerCLI.
Let me explain once again
1. I have afew Dell PowerEdge servers with ESXi installed ( without IP)
My plan is
1. Connect to IDRAC of that hosts via putty
2. run command "racadm gethostnetworkinterfaces" to get USBNIC IP
This NIC will be used to communicate with host OS (Solved: Server 2012 R2 iDRAC Virtual NIC USB Device - Dell Community )
3. SSH to host OS (it will have some random DHCP address)
4. Run required ESXi level command to set IP and VLAN