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 gateway, switch, or InfiniBand device hosts the primary Subnet Manager, and if there are secondary Subnet Managers. If you have only one gateway 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:

   # enablesm
   Starting IB Subnet Manager.                                [  OK  ]
   #

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

      # setsmpriority priority

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

      # setsmpriority 13 
      -------------------------------------------------
      OpenSM 3.2.6_20090717
       Reading Cached Option File: /etc/opensm/opensm.conf
       Loading Cached Option:routing_engine = ftree
       Loading Cached Option:sminfo_polling_timeout = 1000
       Loading Cached Option:polling_retry_number = 3
      Command Line Arguments:
       Priority = 13
       Creating config file template ’/tmp/osm.conf’.
       Log File: /var/log/opensm.log
      -------------------------------------------------
      # 

   2. Restart the Subnet Manager:

      # disablesm
      Stopping IB Subnet Manager.                                [  OK  ]
      # enablesm
      Starting IB Subnet Manager.                                [  OK  ]
      #

4. Attach the data cables.

   See Attach the Data Cables.

Related Information

• Gateway Command Reference, setsmpriority command

• Gateway Command Reference, enablesm command

• Attach the Management Cables

• Attach the Power Cords

• Accessing the Management Controller

• Verify the Gateway Status