Qlogic Storage Networking (Unified Fabric Pilot) Guida di Installazione Scaricare il pdf (Pagina 47)

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

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Qlogic Storage Networking (Unified Fabric Pilot) Guida di Installazione Pagina 47