Brocade FICON Administrator’s Guide (Supporting Fabric OS v7.3.0) - Manual (Page 52)

‐ C3 Discard Frames - 2 per minute
‐ Invalid Words - 25 per minute
‐ Invalid CRCs - 3 per minute
‐ Link Reset - 2 per minute
‐ Protocol Error - 2 per minute
‐ State Change - 7 per minute
• WWN-based persistent port area IDs (PIDs)
Do not enable WWN-based persistent PIDs for FICON environments.
Latency guideline
The maximum supported distance for a FICON channel is 300 Km (1.5 msec of delay). Synchronous
mirroring applications are generally limited to 100 Km (0.5 msec of delay). Greater distances require
that the FICON Acceleration feature be used with FCIP. The FICON Acceleration feature emulates
control unit response to the channel to make the devices appear closer to the channel than they
actually are.
Latency guideline
50 FICON Administrator's Guide
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