[Top] Network Topologies: TG-DUT1-DUT2-TG 3-node circular topology with single links between nodes.
[Enc] Packet Encapsulations: Eth-IPv4 for IPv4 routing.
[Cfg] DUT configuration: DUT1 and DUT2 are configured with IPv4 routing and two static IPv4 /24 route entries. Qemu Guest is connected to VPP via vhost-user interfaces. Guest is running DPDK testpmd interconnecting vhost-user interfaces using 3 cores pinned to cpus 5,6,7 and 2048M memory. Testpmd is using socket-mem=1024M (512x2M hugepages), 3 cores (1 main core and 2 cores dedicated for io), forwarding mode is set to mac, rxq/txq=2048, burst=64. DUT1, DUT2 are tested with 2p10GE NIC X520 Niantic by Intel.
[Ver] TG verification: TG finds and reports throughput NDR (Non Drop Rate) with zero packet loss tolerance or throughput PDR (Partial Drop Rate) with non-zero packet loss tolerance (LT) expressed in percentage of packets transmitted. NDR and PDR are discovered for different Ethernet L2 frame sizes using either binary search or linear search algorithms with configured starting rate and final step that determines throughput measurement resolution. Test packets are generated by TG on links to DUTs. TG traffic profile contains two L3 flow-groups (flow-group per direction, 253 flows per flow-group) with all packets containing Ethernet header, IPv4 header with IP protocol=61 and static payload. MAC addresses are matching MAC addresses of the TG node interfaces.
[Ref] Applicable standard specifications: RFC2544.