2.17.2.10. Yardstick Test Case Description: NSB PROX LwAFTR

NSB PROX test for NFVI characterization

test case id

tc_prox_{context}_lw_aftr-{port_num}

  • context = baremetal or heat_context;

  • port_num = 4;

metric

  • Network Throughput;

  • TG Packets Out;

  • TG Packets In;

  • VNF Packets Out;

  • VNF Packets In;

  • Dropped packets;

test purpose

The PROX LW_AFTR test will take packets in from one port and remove the ipv6 encapsulation and forward them to another port. While forwarded packets in other direction will be encapsulated in an ipv6 header.

The lw_aftr test cases are implemented to run in baremetal and heat context an require 4 port topology to run the default configuration.

configuration

The LW_AFTR test cases are listed below:

  • tc_prox_baremetal_lw_aftr-4.yaml

  • tc_prox_heat_context_lw_aftr-4.yaml

Test duration is set as 300sec for each test. The minimum packet size for MPLS test is 68 bytes. This is set in the traffic profile and can be configured to use higher packet sizes.

test tool

PROX PROX is a DPDK application that can simulate VNF workloads and can generate traffic and used for NFVI characterization

applicability

The PROX lwAFTR test cases can be configured with different:

  • packet sizes;

  • test durations;

  • tolerated loss;

Default values exist.

pre-test conditions

For Openstack test case image (yardstick-samplevnfs) needs to be installed into Glance with Prox and Dpdk included in it.

For Baremetal tests cases Prox and Dpdk must be installed in the hosts where the test is executed. The pod.yaml file must have the necessary system and NIC information

test sequence

description and expected result

step 1

For Baremetal test: The TG and VNF are started on the hosts based on the pod file.

For Heat test: Two host VMs are booted, as Traffic generator and VNF(LW_AFTR workload) based on the test flavor.

step 2

Yardstick is connected with the TG and VNF by using ssh. The test will resolve the topology and instantiate the VNF and TG and collect the KPI’s/metrics.

step 3

The TG will send packets to the VNF. If the number of dropped packets is more than the tolerated loss the line rate or throughput is halved. This is done until the dropped packets are within an acceptable tolerated loss.

The KPI is the number of packets per second for 86 bytes packet size with an accepted minimal packet loss for the default configuration.

step 4

In Baremetal test: The test quits the application and unbind the dpdk ports.

In Heat test: Two host VMs are deleted on test completion.

test verdict

The test case will achieve a Throughput with an accepted minimal tolerated packet loss.