Running ibdiagnet without Parameters
Running ibdiagnet without command line parameters will perform the following fabric diagnostics:
- Fabric Discovery 
- Duplicated GUIDs check 
- Duplicated Node Description Check 
- LID Check 
- Links Check 
- Subnet Managers Check 
- Port Counters Snapshot/Checks in One Sec Period 
- Nodes Information Check (Uniform firmware versions across the fabric. etc) 
- Speed/Width Check 
- Dump Virtualization Information 
- Partition Keys Checks 
- Dump Temperature Sensing 
- Create Network Dump File Similar to the ibnetdiscover Format