Each row entry represents a packet over Sonet port on a IOM card in a chassis in the system. Entries cannot be created and deleted via SNMP SET operations. Before an IOM tmnxMDAEntry can be deleted from the tmnxMDATable, its supported tmnxPortEntry rows must be in the proper state for removal. The tmnxSonetEntry contains attributes that are unique to the 'sonet' TmnxPortType. It also contains attributes that are common to all sonet paths configured on a sonet port. The tmnxPortPortID for a sonet port includes a sonet path number in the lower bits. If the sonet path number is zero, '0', it represents a single (clear) sonet path on the port that uses the full bandwidth of the sonet port. All entries in this table have the sonet path number part of their tmnxPortPortID index value set to zero.