Description: A table that lists each known bridge with a Token Ring interface on the same 'flat net' as the reporting NMM. The number of entries is determined by the number of detected (and active) bridges. Entries are added by reception of a topology message from a bridge or reception of a topology message from an master NMM that was forwarded by a source routing bridge. An entry is removed from the table when no topology messaged are received from bridge in the required time interval.