An entry of the h3cMDCGroupIfTable, every entry is the relationship between interfaces and groups. Due to hardware restrictions, the interfaces on some interface cards are grouped. The interfaces in a group must be assigned to the same MDC at the same time or removed from an MDC at the same time. Interface grouping depends on the device model. This table is used for h3cMDCAllocateTable to show interfae group lists. Note that only entPhysicalIndex values that represent physical ports (i.e., associated entPhysicalClass value is 'port(10)') are permitted to exist in this table.