[CAUSE] The tMirrorLiNatL2awSubOperStateCh notification is sent when the value of the object tMirrorLiNatL2awSubOperState changes. This is related to the state of the ISA MDA where the forwarding entry is located, the availability of resources on that MDA, or the instantiation of the subscriber. [EFFECT] The corresponding inward bound packets are dropped while the operational status is 'down'. [RECOVERY] If the ISA MDA reboots successfully, or another ISA MDA takes over, no recovery is required. If more resources become available on the ISA MDA, no recovery is required.