This reports the state, per CucsFabricVlanAssocPrimaryVlanState, of this specific VLAN's association with its primary VLAN, when configured as part of a private VLAN. For this row, it tells you whether the private-VLAN pairing itself is currently valid and active, as distinct from the sharing type field which only says what kind of pairing was intended; a bad state here means the isolation behavior for this VLAN currently isn't actually in effect. An assocPrimaryVlanState showing the association isn't currently active would explain hosts on this specific secondary VLAN unexpectedly being unable to reach the primary VLAN's promiscuous ports at all.