Qlogic Storage Networking (Unified Fabric Pilot), Installation Manual

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5–Validation Methods for DCB and FCoE
Validation Step 4—Validate PFC and Lossless Link
51031-00 A 5-17
As described earlier, the Expert software analyzes all the pauses in a capture and
reports critical errors, such as
Frame Received while PFC Class Paused
(
Figure 5-16 ). These errors are serious—it is equivalent to sending a Fibre
Channel frame on a link without waiting for a credit. In such a case, the switch will
probably drop the frames, which will cause the Fibre Channel protocol to abort the
sequence, and force the initiator to re-issue the entire sequence. If this is a
recurring error, the link performance declines dramatically.
Figure 5-16. Expert Validating the Reaction to PFC Pause Frames
In Expert, click Report to create a detailed report on all protocol layers
( Figure 5-17 ). This report gives you detailed information about network issues and
statistics.
Figure 5-17. Expert Generates Reports with Detailed Protocol Analysis and
Statistics