Thanks for prompt response Ramesh,
U have saved my day as i have consider thispoint in my POA.....
in our environment we also have Cisco 1110 V switch ,
U said u have already done that so i need ur assistance on below query.
Just want to know before start upgrading our ESXi how to safely remove Cisco 1110V from ESXi and after upgrading ESXi how to add Cisco 1110 V so that it will be visible on VC server.