• Start VPP and configure rules cross-connect rules between two physical ports: ./startup_vpp.sh p2p
  • Current configuration designates the two ports with PCI address 0b:00.0 and 0b:00.1, modify it to your respective PCI addresses for reproduction.
  • Open another terminal and configure VPP l2patch rules: ./vppctl_p2p.sh l2patch
• Instantiate MoonGen to TX/RX the performance for throughput (unidirectional/bidirectional) and latency:
  • Go to the MoonGen repo directory
  • For unidirectional test: sudo ./unidirectional-test.sh -r [packet rate (Mpps)] -s [packet size (Bytes)]
  • For bidirectional test: sudo ./bidirectional-test.sh -r [packet rate (Mpps)] -s [packet size (Bytes)]
  • For latency test: sudo ./latency-test.sh -r [packet rate (Mpps)] -s [packet size (Bytes)]

• Start VPP, bind a physical port and a vhost-user port to VPP, then configure forwarding rules between them:
  • ./startup_vpp.sh p2v
  • Open another terminal and configure VPP l2patch rules: ./vppctl_p2v.sh l2patch
• Start virtual machine using QEMU/KVM and attach one virtual interface: ./p2v.sh
• Login to the VM and setup DPDK according to https://github.com/ztz1989/software-switches#configure-dpdk-inside-the-vm-an-example-is-given-as-follows.
• For unidirectional test:
  • Inside the VM, to to FloWatcher-DPDK directory and instantiate FloWatcher-DPDK to measure unidrectional throughput: ./build/FloWatcher-DPDK -c 3
  • On the host side, go to MoonGen repo directory and start its unidirectional test script on NUMA node 1: sudo ./unidirectional-test.sh -r [packet rate (Mpps)] -s [packet size (Bytes)]
• For bidirectional test:
  • Inside the VM, go to MoonGen directory: cd /root/MoonGen
  • Execute the MoonGen TX/RX script: ./build/MoonGen ../script/txrx.lua -r [packet rate (Mpps)] -s [packet size (Bytes)]
  • On the host side, run MoonGen bidirectional test scripts on NUMA node 1: sudo ./bidirectional-test.sh -r [packet rate (Mpps)] -s [packet size (Bytes)]

• Start VPP and configure the forwarding rules between two VMs
  • ./startup_vpp.sh v2v
  • Open another terminal and configure VPP l2patch rules: ./vppctl_v2v.sh l2patch
• Start two QEMU/KVM virtual machines:
  • ./v2v1.sh # start VM1 which transmits packets to VM2
  • ./v2v.sh # start VM2 which receives packet from VM1 and measures the throughput
• On VM1 (which can also be logged in from the host machine using: ssh root@localhost -p 10020), we start MoonGen using the following commands:
  • Login to the VM and setup DPDK according to https://github.com/ztz1989/software-switches#configure-dpdk-inside-the-vm-an-example-is-given-as-follows.
  • Go to MoonGen directory and run its l2-load-latency sample application: /build/MoonGen example/l2-load-latency.lua 0 0
• On VM2 (which can also be logged in from the host machine using: ssh root@localhost -p 10030), we start an instance of FloWatcher-DPDK to measure the inter-VM throughput:
  • Login to the VM and setup DPDK according to https://github.com/ztz1989/software-switches#configure-dpdk-inside-the-vm-an-example-is-given-as-follows.
  • Go to FloWatcher-DPDK installation directory and launch it using: ./build/FloWatcher-DPDK -c 3

1. start VPP and configure the loopback forwarding rules
   • ./startup_vpp.sh loopback
   • Open another terminal and configure VPP l2patch rules: ./vppctl_loopback-2-vm.sh l2patch
2. start an instance of VM and attach it with two virtual interfaces
   • ./loopback.sh
3. inside the VM, initiate DPDK and run the DPDK l2fwd sample application
   • Login to the VM and setup DPDK according to https://github.com/ztz1989/software-switches#configure-dpdk-inside-the-vm-an-example-is-given-as-follows.
   • Go to DPDK l2fwd sample application directory and launch it: ./build/l2fwd -l 0-3 -- -p 3 -T 1 -q 1
   • run MoonGen scripts on the host machine from NUMA node 1:
     • Go to MoonGen directory of our repo.
     • unidirectional test: sudo ./unidirectional-test.sh
     • bidirectional test: sudo ./bidirectional-test.sh

Depending on the number of VNFs, our experiments use different scripts. We demonstrate only 2-VNF experiment as an example:

1. start VPP 2-VNF configuration script
   • ./startup_vpp loopback2
   • Open another terminal and configure VPP l2patch rules: ./vppctl_loopback2.sh l2patch
2. open a new terminal and launch the first VM: ./loopback-vm1.sh
3. open another terminal and launch the second VM: ./loopback-vm2.sh
4. inside both VMs, setup DPDK according to https://github.com/ztz1989/software-switches#configure-dpdk-inside-the-vm-an-example-is-given-as-follows and launch DPDK l2fwd sample application.
5. Launch MoonGen for different measurement:
   • Go to MoonGen directory of our repo.
   • unidirectional test: sudo ./unidirectional-test.sh
   • bidirectional test: sudo ./bidirectional-test.sh
   • For latency test: sudo ./latency-test.sh -r [packet rate (Mpps)] -s [packet size (Bytes)]