I'm still not really sure what you are doing.
First you should get the enclosure's onboard administrator IP address from the front panel in Enclosure Settings screen:
Then you should locate the active Onboard Administrator module at the backside (blue "active" LED) and check if the LAN is connected.
Try to connect to http or https of the OA.
Does this work? Can you logon?
WHat do you mean by "container"?