show mac-address-table stats

This command displays the Multicast Forwarding Database (MFDB) statistics.

Format show mac-address-table stats
Mode Privileged EXEC
Column
Meaning
Total Entries The total number of entries that can possibly be in the Multicast Forwarding Database table.
Most MFDB Entries Ever Used The largest number of entries that have been present in the Multicast Forwarding Database table. This value is also known as the MFDB high-water mark.
Current Entries The current number of entries in the MFDB.