OPERATIONAL DEFECT DATABASE
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# QinQ ports are misprogrammed leading no MAC learn and packet drops observed. # QinQ consistency checker fails # PACL will not work (no hits)
Exact sequence of events is unknown however is reported on a N9k switch with dot1q tunnel port-channels in tap aggregation mode
shut/no shut port-channel reload the switch for a proper cleanup
issue is not reproducible so far
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