Create vBNG virtual machine for KVM

[lixuna]

Goal: vBNG VNF VM for KVM

Tasks:

• Update vBNG build/runtime code to omit the need for vAAA and vDHCP
  • vAAA dependent code removed
  • vDHCP dependent code removed
• DEFERRED: Investigate PCI pass-through (if large effort, create a new ticket)
  • SR-IOV or Passthrough Mode
  • DEFERRING. Will do another round of tests after this is figured out.
• Update original vBNG install/build to work in KVM/vagrant environment
• Bring up vBNG VM on VM runtime (eg. libvirt + KVM)
• Create smoke test vm for checking packets pass through the BNG VM
• DEFERRED: Save VM with vBNG software installed
  • If needed, Update scripts/vagrant config for using a saved vm
  • Document saving of vBNG VM (if anything is not generic)
  • Create minimal script for saving vBNG VM
• Validate test requirements
  • Investigate need for vxlan
  • investigate VMs required for testing

[michaelspedersen]

Configuration notes for configuring VXLAN endpoints in two different VMs:

vVPP:
  vagrant@vVPP:~$ cat /etc/vpp/setup.gate
  set int state GigabitEthernet0/7/0 up
  set interface ip address GigabitEthernet0/7/0 10.1.0.70/24
  create vxlan tunnel src 10.1.0.70 dst 10.1.0.10 vni 10
  set interface l2 bridge vxlan_tunnel0 10 1
  set bridge-domain arp term 10
  loopback create
  set int l2 bridge loop0 10 bvi 2
  set int ip address loop0 20.0.0.254/24
  set int mac address loop0 de:ad:0a:00:00:00
  set int state loop0 up
  clear l2fib

vBNG:
  root@vBNG:/home/vagrant# cat /etc/vpp/setup.gate
  set int state GigabitEthernet0/7/0 up
  set interface ip address GigabitEthernet0/7/0 10.1.0.10/24
  create vxlan tunnel src 10.1.0.10 dst 10.1.0.70 vni 10
  set interface l2 bridge vxlan_tunnel0 10 1
  set bridge-domain arp term 10
  loopback create
  set int l2 bridge loop0 10 bvi 2
  set int ip address loop0 20.0.0.253/24
  set int mac address loop0 de:ad:0b:00:00:00
  set int state loop0 up
  clear l2fib

This is not the intended configuration of vBNG, as it is not supposed to contain any VXLAN endpoints. For now it is more of a proof-of-concept configuration.

[michaelspedersen]

Investigate PCI pass-through:

• Put on hold for now
• We will likely create a separate ticket for this at a later time
• Does not work well with Mellanox Connectx-3
• Not yet tested with Mellanox Connectx-4

Save VM with vBNG software installed:

• Not yet done
• Idea is to create a common VPP image
• Currently vBNG functionality is added through a few lines of VPP configuration

Validate test requirements:

• VXLAN not needed yet (box-by-box).
• Current solution uses UDP packets (IPv4)
• 2 VMs requires: vBNG and Pktgen (since we don't need VXLAN)

[taylor]

SR-IOV or Passthrough Mode

• DEFERRING. Will do another round of tests after this is figured out.

[taylor]

DEFERRED: Save VM with vBNG software installed

• If needed, Update scripts/vagrant config for using a saved vm
• Document saving of vBNG VM (if anything is not generic)
• Create minimal script for saving vBNG VM

Will create another ticket for a base VPP VM as well as an additional ticket for saving the vBNG VM