Use the following procedure to display the OVSDB controller status.
show ovsdb controller status
SWITCH:1>show ovsdb controller status
==========================================================================================
                                           OVSDB Controller Status
==========================================================================================
Protocol             IP                        Port       status     source
--------------------------------------------------------------------------------
ssl                 192.0.2.2                  6640         Up        Learnt
ssl                 192.0.2.3                  6640         Down      Learnt
2 out of 2 Total Num of Controllers displayed