An entry (conceptual row) in the tLagConfigTable.
Each entry represents a Link Aggregation Group.
Create or destroy rows to add or remove Link Aggregation Groups (LAG).
After tLagRowStatus is set to active(1), a corresponding
entry is created in IEEE8023-LAG-MIB dot3adAggTable.
The corresponding entry in IEEE8023-LAG-MIB dot3adAggTable is
removed when tLagRowStatus is set to destroy(6).
Use ifAdminStatus to set interface up and down for this LAG entry.
Use ifAlias for the interface description.