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iperf3 tests between two machines using vxlan over 10Gbit network with various MTU. **Test 1. vxlan MTU -1500, physical network MTU - 9000** ``` # iperf3 -c 192.168.248.1 Connecting to host 192.168.248.1, port 5201 [ 5] local 192.168.248.2 port 1050 connected to 192.168.248.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 175 MBytes 1.46 Gbits/sec 0 1.27 MBytes [ 5] 1.00-2.01 sec 194 MBytes 1.63 Gbits/sec 0 1.27 MBytes [ 5] 2.01-3.00 sec 195 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 3.00-4.01 sec 196 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 4.01-5.00 sec 195 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 5.00-6.00 sec 195 MBytes 1.63 Gbits/sec 0 1.27 MBytes [ 5] 6.00-7.00 sec 196 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 7.00-8.00 sec 194 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 8.00-9.00 sec 191 MBytes 1.60 Gbits/sec 493 968 KBytes [ 5] 9.00-10.00 sec 193 MBytes 1.62 Gbits/sec 0 1.15 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.88 GBytes 1.61 Gbits/sec 493 sender [ 5] 0.00-10.00 sec 1.88 GBytes 1.61 Gbits/sec receiver iperf Done. ``` **Test 2. vxlan MTU -8900, physical network MTU - 9000** ``` # iperf3 -c 192.168.248.1 Connecting to host 192.168.248.1, port 5201 [ 5] local 192.168.248.2 port 1052 connected to 192.168.248.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 585 MBytes 4.90 Gbits/sec 0 1.28 MBytes [ 5] 1.00-2.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 2.00-3.00 sec 656 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 3.00-4.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 4.00-5.00 sec 656 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 5.00-6.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 6.00-7.00 sec 656 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 7.00-8.00 sec 658 MBytes 5.51 Gbits/sec 0 1.28 MBytes [ 5] 8.00-9.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 9.00-10.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 6.33 GBytes 5.44 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 6.33 GBytes 5.44 Gbits/sec receiver iperf Done. ``` **Test 3. vxlan MTU -8900, physical network MTU - 1500** ``` # iperf3 -c 192.168.248.1 Connecting to host 192.168.248.1, port 5201 [ 5] local 192.168.248.2 port 1055 connected to 192.168.248.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 301 MBytes 2.52 Gbits/sec 0 1.28 MBytes [ 5] 1.00-2.00 sec 335 MBytes 2.81 Gbits/sec 0 1.28 MBytes [ 5] 2.00-3.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 3.00-4.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 4.00-5.00 sec 335 MBytes 2.81 Gbits/sec 0 1.28 MBytes [ 5] 5.00-6.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 6.00-7.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 7.00-8.00 sec 335 MBytes 2.81 Gbits/sec 0 1.28 MBytes [ 5] 8.00-9.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 9.00-10.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 3.25 GBytes 2.79 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 3.25 GBytes 2.79 Gbits/sec receiver iperf Done. ```

iperf3 tests between two machines using vxlan over 10Gbit network with various MTU. **Test 1. vxlan MTU -1500, physical network MTU - 9000** ``` # iperf3 -c 192.168.248.1 Connecting to host 192.168.248.1, port 5201 [ 5] local 192.168.248.2 port 1050 connected to 192.168.248.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 175 MBytes 1.46 Gbits/sec 0 1.27 MBytes [ 5] 1.00-2.01 sec 194 MBytes 1.63 Gbits/sec 0 1.27 MBytes [ 5] 2.01-3.00 sec 195 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 3.00-4.01 sec 196 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 4.01-5.00 sec 195 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 5.00-6.00 sec 195 MBytes 1.63 Gbits/sec 0 1.27 MBytes [ 5] 6.00-7.00 sec 196 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 7.00-8.00 sec 194 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 8.00-9.00 sec 191 MBytes 1.60 Gbits/sec 493 968 KBytes [ 5] 9.00-10.00 sec 193 MBytes 1.62 Gbits/sec 0 1.15 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.88 GBytes 1.61 Gbits/sec 493 sender [ 5] 0.00-10.00 sec 1.88 GBytes 1.61 Gbits/sec receiver iperf Done. ``` **Test 2. vxlan MTU -8900, physical network MTU - 9000** ``` # iperf3 -c 192.168.248.1 Connecting to host 192.168.248.1, port 5201 [ 5] local 192.168.248.2 port 1052 connected to 192.168.248.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 585 MBytes 4.90 Gbits/sec 0 1.28 MBytes [ 5] 1.00-2.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 2.00-3.00 sec 656 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 3.00-4.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 4.00-5.00 sec 656 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 5.00-6.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 6.00-7.00 sec 656 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 7.00-8.00 sec 658 MBytes 5.51 Gbits/sec 0 1.28 MBytes [ 5] 8.00-9.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 9.00-10.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 6.33 GBytes 5.44 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 6.33 GBytes 5.44 Gbits/sec receiver iperf Done. ``` **Test 3. vxlan MTU -8900, physical network MTU - 1500** ``` # iperf3 -c 192.168.248.1 Connecting to host 192.168.248.1, port 5201 [ 5] local 192.168.248.2 port 1055 connected to 192.168.248.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 301 MBytes 2.52 Gbits/sec 0 1.28 MBytes [ 5] 1.00-2.00 sec 335 MBytes 2.81 Gbits/sec 0 1.28 MBytes [ 5] 2.00-3.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 3.00-4.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 4.00-5.00 sec 335 MBytes 2.81 Gbits/sec 0 1.28 MBytes [ 5] 5.00-6.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 6.00-7.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 7.00-8.00 sec 335 MBytes 2.81 Gbits/sec 0 1.28 MBytes [ 5] 8.00-9.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 9.00-10.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 3.25 GBytes 2.79 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 3.25 GBytes 2.79 Gbits/sec receiver iperf Done. ``` Additional test for MTU up to 65K.

iperf3 tests between two machines using vxlan over 10Gbit network with various MTU. **Test 1. vxlan MTU -1500, physical network MTU - 9000** ``` # iperf3 -c 192.168.248.1 Connecting to host 192.168.248.1, port 5201 [ 5] local 192.168.248.2 port 1050 connected to 192.168.248.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 175 MBytes 1.46 Gbits/sec 0 1.27 MBytes [ 5] 1.00-2.01 sec 194 MBytes 1.63 Gbits/sec 0 1.27 MBytes [ 5] 2.01-3.00 sec 195 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 3.00-4.01 sec 196 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 4.01-5.00 sec 195 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 5.00-6.00 sec 195 MBytes 1.63 Gbits/sec 0 1.27 MBytes [ 5] 6.00-7.00 sec 196 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 7.00-8.00 sec 194 MBytes 1.64 Gbits/sec 0 1.27 MBytes [ 5] 8.00-9.00 sec 191 MBytes 1.60 Gbits/sec 493 968 KBytes [ 5] 9.00-10.00 sec 193 MBytes 1.62 Gbits/sec 0 1.15 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.88 GBytes 1.61 Gbits/sec 493 sender [ 5] 0.00-10.00 sec 1.88 GBytes 1.61 Gbits/sec receiver iperf Done. ``` **Test 2. vxlan MTU -8900, physical network MTU - 9000** ``` # iperf3 -c 192.168.248.1 Connecting to host 192.168.248.1, port 5201 [ 5] local 192.168.248.2 port 1052 connected to 192.168.248.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 585 MBytes 4.90 Gbits/sec 0 1.28 MBytes [ 5] 1.00-2.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 2.00-3.00 sec 656 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 3.00-4.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 4.00-5.00 sec 656 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 5.00-6.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 6.00-7.00 sec 656 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 7.00-8.00 sec 658 MBytes 5.51 Gbits/sec 0 1.28 MBytes [ 5] 8.00-9.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes [ 5] 9.00-10.00 sec 655 MBytes 5.50 Gbits/sec 0 1.28 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 6.33 GBytes 5.44 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 6.33 GBytes 5.44 Gbits/sec receiver iperf Done. ``` **Test 3. vxlan MTU -8900, physical network MTU - 1500** ``` # iperf3 -c 192.168.248.1 Connecting to host 192.168.248.1, port 5201 [ 5] local 192.168.248.2 port 1055 connected to 192.168.248.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 301 MBytes 2.52 Gbits/sec 0 1.28 MBytes [ 5] 1.00-2.00 sec 335 MBytes 2.81 Gbits/sec 0 1.28 MBytes [ 5] 2.00-3.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 3.00-4.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 4.00-5.00 sec 335 MBytes 2.81 Gbits/sec 0 1.28 MBytes [ 5] 5.00-6.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 6.00-7.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 7.00-8.00 sec 335 MBytes 2.81 Gbits/sec 0 1.28 MBytes [ 5] 8.00-9.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes [ 5] 9.00-10.00 sec 336 MBytes 2.82 Gbits/sec 0 1.28 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 3.25 GBytes 2.79 Gbits/sec 0 sender [ 5] 0.00-10.00 sec 3.25 GBytes 2.79 Gbits/sec receiver iperf Done. ``` Additional test for MTU up to 65K.