Use the following procedure to display the admin status of the Controller.
show isis spbm

Note
The SPB-PIM-GW column displays either Controller, Gateway, or Controller/Gateway if the Controller and or Gateway functionality is configured.
Switch:1>show isis spbm
============================================================================================
                                 ISIS SPBM Info
============================================================================================
SPBM       B-VID      PRIMARY    NICK     LSDB     IP       IPV6     MULTICAST   SPB-PIM-GW
INSTANCE              VLAN       NAME     TRAP    
--------------------------------------------------------------------------------------------
1          10,20      10         0.00.77  disable  enable   disable  enable      controller
============================================================================================
                              ISIS SPBM SMLT Info
============================================================================================
SPBM       SMLT-SPLIT-BEB       SMLT-VIRTUAL-BMAC     SMLT-PEER-SYSTEM-ID
INSTANCE  
--------------------------------------------------------------------------------------------
1          primary              00:00:00:00:00:00                        
--------------------------------------------------------------------------------
 Total Num of SPBM instances: 1
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