Subnet Manager should be active prior to activation of Aggregation Manager (AM). Mellanox SHARP functionality should be enabled in Switch-IB 2 switches (disabled by default).
In order to change OpenSM configuration, edit OpenSM configuration file (default location for MLNX_OFED OpenSM is /etc/opensm/opensm.conf) and modify configuration as follows.
To enable Mellanox SHARP functionality on Switch-IB 2 based switches:
Configure “sharp_enabled” parameter:
To configure updn/ftree support in OpenSM:
Configure the "routing_engine" parameter.
To run OpenSM with the configuration file.
# opensm -F <opensm configuration file> -B
To configure Hypercube support in Subnet Manager:
Configure OpenSM to use DOR routing engine.
Configure OpenSM to create Hypercube coordinates file.
To configure Dragonfly+ support in Subnet Manager:
Use OpenSM/Adaptive Routing manager plugin manual to configure OpenSM to be able to use dragonfly+ routing.
To Verify that the Aggregation Nodes were activated by OpenSM, run “ibnetdiscover” and verify that Aggregation Nodes appear and have LID.
vendid=0x0 devid=0xcf09 sysimgguid=0x7cfe900300a5a2a0 caguid=0x7cfe900300a5a2a8 Ca 1 "H-7cfe900300a5a2a8" #"Mellanox Technologies Aggregation Node" and "(7cfe900300a5a2a8) "S-7cfe900300a5a2a0"  # lid 256 lmc 0 "MF0;sharp2:MSB7800/U1" lid 512 4xFDR