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qos_ecn_config_test

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Github Action edited this page Aug 13, 2024 · 4 revisions

DP-1.3: QoS ECN feature config

Summary

Verify QoS ECN feature configuration.

Procedure

  • Connect DUT port-1 to ATE port-1, DUT port-2 to ATE port-2.

  • ECN configuration paramentes:

    • This test is verifying DUT ability to accept ECN configuration with vertical buffer utilization cut-off line.\ If buffer is utilized below that cut-off value no packet is ECN CE marked.\ If buffer is utilized at of above that cut-off value all packet are ECN CE marked.

    • ECN profile can be created for different queues. ECN profiles per queue can be applied to the output side of interfaces.

      Test case min-threshold max-threshold enable-ecn drop weight max-drop-probability-percent
      #1 80KB 80KB true false not set 100
      [TODO]#2 3.125MB 6.250MB* true false not set 100
      [TODO]#3 1% 2% true false not set 100

    • 6.25MB max-treshhold is selected as it represents ~500 mico-seconds of Delay bandwidth Buffer on 100GE interfaces. What is O(2%) of buffer depth, hence allows for micro-burst absorbtion without beackpressing senders and at same time leaves enough DBB for accomodate RTT ECN signaling loop delay in global network for longer burst/congestion.

  • Procedure

    • Test Case #1 80KB min-threshold equal max-threshold
      • Configute queue-management-profile w/ ECN paramenters as above. Attach to queue on DUT-Port1.
      • Validate that the following values are set as expected using OC telemetry.
        • min-threshold
        • max-threshold
        • min-threshold = max-threshold (vertical cut-off line)
        • enable-ecn
        • drop
        • max-drop-probability-percent
      • Validate ECN profile can be applied under output interface queue using OC telemetry.
    • [TODO]Test Case #2 Treshold in MB, min-threshold not-equal max-threshold
      • Configute queue-management-profile w/ ECN paramenters as above. Attach to queue on DUT-Port1.
      • Validate that the following values are set as expected using OC telemetry.
        • min-threshold
        • max-threshold
        • enable-ecn
        • drop
        • max-drop-probability-percent
      • Validate ECN profile can be applied under output interface queue using OC telemetry.
    • [TODO]Test Case #3 Treshold in percentage, min-threshold not-equal max-threshold
      • Configute queue-management-profile w/ ECN paramenters as above. Attach to queue on DUT-Port1.
      • Validate that the following values are set as expected using OC telemetry.
        • min-threshold-percent
        • max-threshold-percent
        • enable-ecn
        • drop
        • max-drop-probability-percent
      • Validate ECN profile can be applied under output interface queue using OC telemetry.

Config parameter coverage

  • ECN

    • [TODO] qos/queue-management-profiles/queue-management-profile/wred/uniform/config/min-threshold-percent
    • [TODO] qos/queue-management-profiles/queue-management-profile/wred/uniform/config/max-threshold-percent
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/config/min-threshold
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/config/max-threshold
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/config/enable-ecn
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/config/weight
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/config/drop
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/config/max-drop-probability-percent

  • Interfaces

    • /qos/interfaces/interface/input/classifiers/classifier/config/name
    • /qos/interfaces/interface/output/queues/queue/config/name
    • /qos/interfaces/interface/output/queues/queue/config/queue-management-profile

telemetry parameter coverage

  • ECN

    • [TODO] qos/queue-management-profiles/queue-management-profile/wred/uniform/state/min-threshold-percent
    • [TODO] qos/queue-management-profiles/queue-management-profile/wred/uniform/state/max-threshold-percent
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/state/min-threshold
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/state/max-threshold
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/state/enable-ecn
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/state/weight
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/state/drop
    • qos/queue-management-profiles/queue-management-profile/wred/uniform/state/max-drop-probability-percent

  • Interfaces

    • /qos/interfaces/interface/input/classifiers/classifier/state/name
    • /qos/interfaces/interface/output/queues/queue/state/name
    • /qos/interfaces/interface/output/queues/queue/state/queue-management-profile

platform

  • vRX

OpenConfig Path and RPC Coverage

The below yaml defines the OC paths intended to be covered by this test. OC paths used for test setup are not listed here.

paths:
  ## Config paths
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/config/min-threshold:
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/config/max-threshold:
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/config/enable-ecn:
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/config/weight:
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/config/drop:
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/config/max-drop-probability-percent:
  /qos/interfaces/interface/input/classifiers/classifier/config/name:
  /qos/interfaces/interface/output/queues/queue/config/name:
  /qos/interfaces/interface/output/queues/queue/config/queue-management-profile:

  ## State paths:

  /qos/queue-management-profiles/queue-management-profile/wred/uniform/state/min-threshold:
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/state/max-threshold:
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/state/enable-ecn:
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/state/weight:
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/state/drop:
  /qos/queue-management-profiles/queue-management-profile/wred/uniform/state/max-drop-probability-percent:
  /qos/interfaces/interface/input/classifiers/classifier/state/name:
  /qos/interfaces/interface/output/queues/queue/state/name:
  /qos/interfaces/interface/output/queues/queue/state/queue-management-profile:

rpcs:
  gnmi:
    gNMI.Set:
      Replace:
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