qos_basic_test - bstoll/featureprofiles GitHub Wiki
Verify that DUT supports QoS config and forward QoS traffic correctly.
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Topology:
- 2 input interfaces and 1 output interface with the same port speed. The interface can be a physical interface or LACP bundle interface with the same aggregated speed.
ATE port 1 | DUT--------ATE port 3 | ATE port 2
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Traffic classes:
- We will use 7 traffic classes NC1, AF4, AF3, AF2, AF1, BE0 and BE1.
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Traffic types:
- All the traffic tests apply to both IPv4 and IPv6 traffic.
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Queue types:
- NC1 will have strict priority queues
- AF4/AF3/AF2/AF1/BE1/BE0 will use WRR queues.
- NC1 and AF4 will have strict priority queues with NC1 having higher
priority.
- AF3, AF2, AF1, BE1 and BE0 will use WRR queues.
- NC1 will have strict priority queues
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Test results should be independent of the location of interfaces. For example, 2 input interfaces and output interface could be located on
- Same ASIC-based forwarding engine
- Different ASIC-based forwarding engine on same line card
- Different ASIC-based forwarding engine on different line cards
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Test results should be the same for port speeds 100G and 400G.
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Connect DUT port-1 to ATE port-1, DUT port-2 to ATE port-2 and DUT port-3 to ATE port-3.
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Configuration:
- Configure strict priority queues for NC1.
- Configure WRR for AF4, AF3, AF2, AF1, BE0 and BE1 with weight 48, 12, 8, 4, 1 and 1 respectively.
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Counters should be verified for each test case:
- /qos/interfaces/interface/output/queues/queue/state/transmit-pkts
- /qos/interfaces/interface/output/queues/queue/state/dropped-pkts
- transmit-pkts should be equal to the number of Rx pkts on Ixia port
- dropped-pkts should be equal to diff between the number of Tx and the number Rx pkts on Ixia ports
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Latency:
- Should be < 100000ns
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Non-oversubscription traffic test case 1 with 80% of aggregated linerate
Traffic class Interface1(line rate %) Interface2(line rate %) Rx from interface1(%) Rx from interface2(%) NC1 3 3 100 100 Af4 24 24 100 100 AF3 6 6 100 100 AF2 4 4 100 100 AF1 2 2 100 100 BE0 0.5 0.5 100 100 BE1 0.5 0.5 100 100 -
Non-oversubscription traffic test case 2 with 98% of aggregated linerate
Traffic class Interface1(line rate %) Interface2(line rate %) Rx from interface1(%) Rx from interface2(%) NC1 5 4 100 100 Af4 30 30 100 100 AF3 7.5 7.5 100 100 AF2 4 4 100 100 AF1 2 2 100 100 BE0 0.5 0.5 100 100 BE1 0.5 0.5 100 100 -
Verify that there is no traffic loss
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Initiate traffic
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Counters should be verified using gNMI subscribe with sample mode
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Run the test twice, once with a SAMPLE interval of 10 Seconds and once again with a SAMPLE interval of 15 seconds for the below telemetry paths
- /qos/interfaces/interface/output/queues/queue/state/transmit-pkts
- /qos/interfaces/interface/output/queues/queue/state/transmit-octets
- /qos/interfaces/interface/output/queues/queue/state/dropped-pkts
- /qos/interfaces/interface/output/queues/queue/state/dropped-octets
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Ensure counter of all queues increment at the selected SAMPLE interval
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Classifiers
- /qos/classifiers/classifier/config/name
- /qos/classifiers/classifier/config/type
- /qos/classifiers/classifier/terms/term/actions/config/target-group
- /qos/classifiers/classifier/terms/term/conditions/ipv4/config/dscp-set
- qos/classifiers/classifier/terms/term/conditions/ipv6/config/dscp-set
- /qos/classifiers/classifier/terms/term/config/id
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Forwarding Groups
- /qos/forwarding-groups/forwarding-group/config/name
- /qos/forwarding-groups/forwarding-group/config/output-queue
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Queue
- /qos/queues/queue/config/name
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Interfaces
- /qos/interfaces/interface/input/classifiers/classifier/config/name
- /qos/interfaces/interface/output/queues/queue/config/name
- /qos/interfaces/interface/output/scheduler-policy/config/name
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Scheduler policy
- /qos/scheduler-policies/scheduler-policy/config/name
- /qos/scheduler-policies/scheduler -policy/schedulers/scheduler/config/priority
- /qos/scheduler-policies/scheduler-policy/schedulers/scheduler/config/sequence
- /qos/scheduler-policies/scheduler-policy/schedulers/scheduler/config/type
- /qos/scheduler-policies/scheduler-policy/schedulers/scheduler/inputs/input/config/id
- /qos/scheduler-policies/scheduler-policy/schedulers/scheduler/inputs/input/config/input-type
- /qos/scheduler-policies/scheduler-policy/schedulers/scheduler/inputs/input/config/queue
- /qos/scheduler-policies/scheduler-policy/schedulers/scheduler/inputs/input/config/weight
- /qos/interfaces/interface/output/queues/queue/state/transmit-pkts
- /qos/interfaces/interface/output/queues/queue/state/transmit-octets
- /qos/interfaces/interface/output/queues/queue/state/dropped-pkts
- /qos/interfaces/interface/output/queues/queue/state/dropped-octets
- gNMI
- Get
- Subscribe
- FFF