1Place the ESXi host in maintenance mode. 2Remove the ESXi host from vCenter Server. 3 Connect directly using the ESXi Host UI Client or KVM. NOTE: Ensure you have console access to the ESXi server before doing the step. 4.Change the IP address and update the DNS server. 5.Add the ESXi host back to vCenter Server.Then restart VC management network and ESXi host management agents