| Item | Description |
| Port | The value of the instance of the ifIndex object, defined in MIB-II, for the interface corresponding to this port. |
| DelayExceededDiscards | The number of frames discarded by this port due to excessive transit delay through the bridge. It is incremented by both transparent and source route bridges. |
| MtuExceededDiscards | The number of frames discarded by this port due to an excessive size. It is incremented by both transparent and source route bridges. |