Start the Subnet Manager

Your InfiniBand fabric requires only one primary (or master) Subnet Manager, and it has the highest priority. If any other Subnet Managers exist, they are secondary Subnet Managers, and must have a lower priority. You must determine which switch, switch, or InfiniBand device hosts the primary Subnet Manager, and if there are secondary Subnet Managers. If you have only one switch in your InfiniBand fabric, and there are no Subnet Managers other than the one within the management controller, you do not need to set the Subnet Manager priority.

1. Identify the prerequisite and subsequent installation tasks that you must perform in conjunction with this procedure.

   See Installation Sequence.

2. Enable the Subnet Manager:

   FabMan@switch_name-> enablesm
   Starting IB Subnet Manager.                                [  OK  ]
   Starting partitiond daemon.                                [  OK  ]
   FabMan@switch_name->

3. (Optional) Configure the priority of the Subnet Manager within the management controller.
   1. Set the priority of the Subnet Manager:

      FabMan@switch_name-> setsmpriority priority

      where priority is 0 (lowest) to 13 (highest). For example, to set the Subnet Manager to priority 13:

      FabMan@switch_name-> setsmpriority 13 
      Current SM settings:
      smpriority 13
      controlled_handover FALSE
      subnet_prefix 0xfe80000000000000
      M_Key None
      FabMan@switch_name-> 

   2. Restart the Subnet Manager:

      FabMan@switch_name-> disablesm
      Stopping partitiond daemon.                                [  OK  ]
      Stopping IB Subnet Manager..                               [  OK  ]
      FabMan@switch_name-> enablesm
      Starting IB Subnet Manager.                                [  OK  ]
      Starting partitiond daemon.                                [  OK  ]
      FabMan@switch_name->

4. Attach the data cables.

   See Attach the Data Cables.

Related Information

• Switch Reference, setsmpriority command

• Switch Reference, enablesm command

• Attach the Management Cables

• Attach the Power Cords

• Accessing the Management Controller

• Verify the Switch Status