This reports whether this specific VLLI instance group is administratively active, independent of the global VLLI admin state, meaning this particular group could be disabled for testing or decommissioning purposes even while VLLI overall remains enabled on the device. An admin auditing why a specific failover scheme didn't trigger during a known fault should check this group-level state first, since a disabled group would never act regardless of any fault occurring within it. For example, a group intentionally disabled while its configuration is being revised would not trigger any recovery action even if all its monitored sources went down simultaneously.