Hot to Verify InfiniBand Fabric Topology ?

Verifying infiniband topology whether it is configured current or not. If it not gives the desired output as per below then it will cause the InfiniBand network to operate at degraded efficiency, intermittently, or fail to operate.

# /opt/oracle.SupportTools/ibdiagtools/verify-topology -t fattree

[ DB Machine InfiniBand Cabling Topology Verification Tool ]
Is every external switch connected to every internal switch..........[SUCCESS]
Are any external switches connected to each other....................[SUCCESS]
Are any hosts connected to spine switch..............................[SUCCESS]
Check if all hosts have 2 CAs to different switches..................[SUCCESS]
Leaf switch check: cardinality and even distribution.................[SUCCESS]
Check if each rack has an valid internal ring........................[SUCCESS]

If anything other than "SUCCESS" is reported, investigate and correct the condition.