# See the License for the specific language governing permissions and
# limitations under the License.
*** Settings ***
+| Library | resources.libraries.python.InterfaceUtil
+| Library | resources.libraries.python.NodePath
| Resource | resources/libraries/robot/vat/interfaces.robot
*** Keywords ***
| | VPP reports interfaces through VAT on | ${node}
#| | VPP reports interfaces through ODL on | ${node}
#| | VPP reports interfaces through DEBUGCLI on | ${node}
+
+| Setup MTU on TG based on MTU on DUT
+| | [Documentation] | Type of the tg_node must be TG and dut_node must be DUT
+| | [Arguments] | ${tg_node} | ${dut_node}
+| | Append Nodes | ${tg_node} | ${dut_node}
+| | Compute Path
+| | ${tg_port} | ${tg_node}= | First Interface
+| | ${dut_port} | ${dut_node}= | Last Interface
+| | # get physical layer MTU (max. size of Ethernet frame)
+| | ${mtu}= | Get Interface MTU | ${dut_node} | ${dut_port}
+| | # Ethernet MTU is physical layer MTU minus size of Ethernet header and FCS
+| | ${eth_mtu}= | Evaluate | ${mtu} - 14 - 4
+| | Set Interface Ethernet MTU | ${tg_node} | ${tg_port} | ${eth_mtu}
+