# getmaster
This command displays the host name or IP address and the IP address of the switch
where the master SM is running.
13.2.4.2 Relocate the Master Subnet Manager
You are required to relocate the master SM from a leaf switch (Sun Network QDR
InfiniBand Gateway Switch) to the spine switch (Sun Datacenter InfiniBand Switch 36)
when you are connecting more than one Exalogic machine. This step is also necessary
when you are connecting an Exalogic machine to an Oracle Exadata Database
Machine.
Relocating the master SM does not affect the availability of the InfiniBand network.
You can perform this task while normal workload is running.
To relocate the master SM from a leaf switch (Sun Network QDR InfiniBand Gateway
Switch) to the spine switch (Sun Datacenter InfiniBand Switch 36):
1.
Identify the location of the master SM, as described in Identify the Location of
Master Subnet Manager.
2.
If the master SM is not running on a spine switch, log in as a root user to the leaf
switch where the master SM is located.
3. Disable SM on the switch, as described in Disable Subnet Manager on a Switch.
This step relocates the master SM to another switch in the network.
4. Perform the above steps until the master SM relocates to the spine switch (Sun
Datacenter InfiniBand Switch 36).
5. Enable SM on the leaf switches where SM was disabled during this procedure. For
information about enabling SM on a switch, see Enable Subnet Manager on a
Switch.
13.2.4.3 Enable Subnet Manager on a Switch
To enable SM on a switch:
1. Log in as a root user.
2. At the command prompt, run the following command:
# enablesm
13.2.4.4 Disable Subnet Manager on a Switch
To disable SM on a switch:
1.
Log in as a root user.
2.
At the command prompt, run the following command:
# disablesm
13.3 Work with the Default Rack-Level InfiniBand Partition
This section contains the following topics:
• Partition in Exalogic Machine
Work with the Default Rack-Level InfiniBand Partition
Manage the InfiniBand Network Using Subnet Manager 13-5
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