14.4 Start the Subnet Manager in Multirack Configuration Scenarios
The Sun Datacenter InfiniBand Switch 36, which is referred to as the spine switch, is
not connected, by default. Therefore, when you connect this switch in multirack
configuration scenarios, you must start the Subnet Manager manually on the switch as
follows:
1. On the CLI of the spine switch, run the following command:
# enablesm
2.
On the CLI of the spine switch, set the Subnet Manager priority within the
command-line interface (CLI) as follows:
# setsmpriority priority
Note:
For information about the switches on which the SM should run in various
rack configurations and the SM priorities for the switches, see Subnet Manager
Operation in Different Rack Configurations
For example, to set the Subnet Manager on the spine switch to priority 8, run the
following command on the CLI of the spine switch:
# setsmpriority 8
The following output is displayed:
-------------------------------------------------
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 = 8
Creating config file template '/tmp/osm.conf'.
Log File: /var/log/opensm.log
-------------------------------------------------
For the changes to take effect, restart the Subnet Manager as follows:
# disablesm
# enablesm
3.
After assigning the SM priority on the spine switch correctly, on the CLI of the
gateway switches (Sun Network QDR InfiniBand Gateway Switches referred to as
leaf switches in this guide), run the following command to disable Subnet Manager
individually on the gateway switches:
# disablesm
Start the Subnet Manager in Multirack Configuration Scenarios
14-4 Oracle Exalogic Elastic Cloud Machine Owner's Guide
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