Class 2 Frame Recovery Timeout After Port Failure

Class 2 Frame Recovery Timeout Exceeded After Intermittent Port Failure

0 reputation · 15 Feb 2020, 14:02 UTC

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Goal

Determine how a Fiber Channel SAN should behave when verifying restored data after a brief link loss that triggers Class 2 frame recovery, given that vendors implement different timeout and retransmission timers.

Constraints include the lack of a universal standard for Class 2 recovery, dependence on HBA firmware and switch OS, and the need to ensure that verification throughput measurements are not skewed by a degraded link state.

What is the expected recovery interval before the link returns to full speed? How should verification procedures account for possible temporary bandwidth reduction? Which vendor‑specific parameters must be documented to make the behavior predictable?

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Class 2 Frame Recovery Timeout Exceeded After Intermittent Port Failure

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