Multi-Switch Link Aggregation Group (MLAG) Linkup Isolation

Under certain circumstances, a temporary (less than a second) loop condition exists when an MLAG port becomes operational, but before the remote Multi-Switch Link Aggregation Group (MLAG) peer installs the ISC blocking filter. MLAG linkup isolation addresses this condition by preventing any flood traffic (broadcast, unknown, unicast, etc.) received on a just operational MLAG port from being forwarded to ISC ports until the remote MLAG peer installs the ISC blocking filter.