Each tmnxBsxGrpStatusEntry contains the performance-oriented
status information for a particular group and ISA-AA MDA.
An index with a valid tmnxBsxIsaAaGroupIndex, tmnxChassisIndex set to
one, and a zero value for each of the tmnxBsxCardSlotNum/tmnxMDASlotNum
indices will return the summarized per group status.
Rows in this table are created by the agent at initialization and
cannot be created or destroyed by SNMP Set requests.