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CONTAP-785321: Excessive ifgrp member link flaps on CX5/X550/Qlogic NIC due to long frame errors from R9.18.1

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ontap-9
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CORE
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Issue

After an ONTAP upgrade, Ethernet ports that are members of an interface group (ifgrp) can be repeatedly marked degraded and administratively brought down by the port health monitor. The ports recover and then fail again, producing repeated link flaps

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