HP QLogic Converged Network Adapter Installation Guide (747713-001, September 2013)

Figure 16 Example of loginshow output
Figure 17 Example of show interface output
2. Observe the CN switch and CNA link error counters.
If any of these steps detect errors, the most likely causes are incompatible or faulty cables,
SFPs, or CN switch ports. Cable or SFP problems can cause a wide range of symptoms, from
solid or intermittent LEDs to performance issues. The FCoE switch port and CNA port error
counters are good indications of potential intermittent and performance problems.
HP Restricted Isolating CNA problems 21