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.. This work is licensed under a Creative Commons Attribution 4.0 International
.. License.
.. http://creativecommons.org/licenses/by/4.0
.. (c) OPNFV, 2019 Intel Corporation.
***************************************************************
Yardstick Test Case Description: NSB vBNG RFC2544 QoS TEST CASE
***************************************************************
+-----------------------------------------------------------------------------+
|NSB vBNG RFC2544 QoS base line test case with link congestion |
| |
+--------------+--------------------------------------------------------------+
|test case id | tc_bng_pppoe_rfc2544_ixia_8ports_1port_congested_IMIX |
| | |
+--------------+--------------------------------------------------------------+
| metric | Network metrics: |
| | * TxThroughput |
| | * RxThroughput |
| | * TG packets in |
| | * TG packets out |
| | * Max Latency |
| | * Min Latency |
| | * Average Latency |
| | * Packets drop percentage |
| | |
| | PPPoE subscribers metrics: |
| | * Sessions up |
| | * Sessions down |
| | * Sessions Not Started |
| | * Sessions Total |
| | |
| | NOTE: the same network metrics list are collecting: |
| | * summary for all ports |
| | * per port |
| | * per priority flows summary on all ports |
| | |
+--------------+--------------------------------------------------------------+
|test purpose | This test allows to measure performance of BNG network device|
| | according to RFC2544 testing methodology. Test case creates |
| | PPPoE subscribers connections to BNG, run prioritized traffic|
| | causing congestion of access port (port xe0) and collects |
| | network and PPPoE subscribers metrics. |
| | |
+--------------+--------------------------------------------------------------+
|configuration | The BNG QoS RFC2544 test cases are listed below: |
| | |
| | * tc_bng_pppoe_rfc2544_ixia_8ports_1port_congested_IMIX.yaml |
| | |
| | Number of ports: |
| | * 8 ports |
| | |
| | Test duration: |
| | * set as 30sec; |
| | |
| | Traffic type: |
| | * IPv4; |
| | |
| | Packet sizes: |
| | * IMIX. The following default IMIX distribution is using: |
| | |
| | uplink: 70B - 33%, 940B - 33%, 1470B - 34% |
| | downlink: 68B - 3%, 932B - 1%, 1470B - 96% |
| | |
| | VLAN settings: |
| | * QinQ on access ports; |
| | * VLAN on core ports; |
| | |
| | Number of PPPoE subscribers: |
| | * 4000 per access port; |
| | * 1000 per SVLAN; |
| | |
| | Default ToS bits settings: |
| | * 0 - (000) Routine |
| | * 4 - (100) Flash Override |
| | * 7 - (111) Network Control. |
| | |
| | The above fields are the main options used for the test case |
| | and could be configured using cli options on test run or |
| | directly in test case yaml file. |
| | |
| | NOTE: that only parameter that can't be changed is ports |
| | number. To run the test with another number of ports |
| | traffic profile should be updated. |
| | |
+--------------+--------------------------------------------------------------+
|test tool | IXIA IxNetwork |
| | |
| | IXIA IxNetwork is using to emulates PPPoE sessions, generate |
| | L2-L3 traffic, analyze traffic flows and collect network |
| | metrics during test run. |
| | |
+--------------+--------------------------------------------------------------+
|applicability | Mentioned BNG QoS RFC2544 test cases can be configured with |
| | different: |
| | |
| | * Number of PPPoE subscribers sessions; |
| | * IP Priority type; |
| | * Packet size; |
| | * enable/disable BGP protocol on core ports; |
| | |
| | Default values exist. |
| | |
+--------------+--------------------------------------------------------------+
|references | RFC2544 |
| | |
+--------------+--------------------------------------------------------------+
| pre-test | 1. BNG is up and running and has configured: |
| conditions | * access ports with QinQ tagging; |
| | * core ports with configured IP addresses and VLAN; |
| | * PPPoE subscribers authorization settings (no auth or |
| | Radius server, PAP auth protocol); |
| | * QoS settings; |
| | |
| | 2. IxNetwork API server is running on specified in pod.yaml |
| | file TCL port; |
| | |
| | 3. BNG ports are connected to IXIA ports (IXIA uplink |
| | ports are connected to BNG access ports and IXIA |
| | downlink ports are connected to BNG core ports; |
| | |
| | 4. The pod.yaml file contains all necessary information |
| | (BNG access and core ports settings, core ports IP |
| | address, NICs, IxNetwork TCL port, IXIA uplink/downlink |
| | ports, etc). |
| | |
+--------------+--------------------------------------------------------------+
|test sequence | description and expected result |
| | |
+--------------+--------------------------------------------------------------+
|step 1 | Yardstick resolve the topology and connects to IxNetwork |
| | API server by TCL. |
| | |
+--------------+--------------------------------------------------------------+
|step 2 | Test scenarios run, which performs the following steps: |
| | |
| | 1. Create access network topologies (this topologies are |
| | based on IXIA ports which are connected to BNG access |
| | ports); |
| | 2. Configure access network topologies with multiple device |
| | groups. Each device group represents single SVLAN with |
| | PPPoE subscribers sessions (number of created on port |
| | SVLANs and subscribers depends on specified if test case |
| | file options); |
| | 3. Create core network topologies (this topologies are |
| | based on IXIA ports which are connected to BNG core |
| | ports); |
| | 4. Configure core network topologies with single device |
| | group which represents one connection with configured |
| | VLAN and BGP protocol; |
| | 5. Establish PPPoE subscribers connections to BNG; |
| | 6. Create traffic flows between access and core ports. |
| | While test covers case with access port congestion, |
| | flows between ports will be created in the following |
| | way: traffic from two core ports are going to one access |
| | port causing port congestion and traffic from other two |
| | core ports is splitting between remaining three access |
| | ports; |
| | 7. Configure each traffic flow with specified in traffic |
| | profile options; |
| | 8. Run traffic with specified in test case file duration; |
| | 9. Collect network metrics after traffic was stopped; |
| | 10. Measure drop percentage rate of different priority |
| | packets on congested port. Expected that all high and |
| | medium priority packets was forwarded and only low |
| | priority packets has drops. |
| | 11. Disconnect PPPoE subscribers and stop test. |
| | |
+--------------+--------------------------------------------------------------+
|step 3 | During test run, in the end of each iteration all specified |
| | in the document metrics are retrieved from IxNetwork and |
| | stored in the yardstick dispatcher. |
| | |
+--------------+--------------------------------------------------------------+
|test verdict | The test case is successful if all high and medium priority |
| | packets on congested port was forwarded and only low |
| | priority packets has drops. |
| | |
+--------------+--------------------------------------------------------------+
|
