Oracle Exadata Database Machine includes the verify-topology utility.
This utility can be used to identify the following network connection problems:
Missing InfiniBand cable
Missing InfiniBand connection
Incorrectly-seated cable
Cable connected to the wrong endpoint
Verifying infiniband topology if it is configured to be current or not.
The InfiniBand network would operate at degraded efficiency intermittently or fail to operate, if the following desired output is not seen:
# /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.
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