Create a Readme for RT-5.11

feature/interface/loadinterval/otg_tests/README.md

@@ -0,0 +1,64 @@
+# RT-5.11: Interface Load-Interval for Statistics Sampling
+
+## Summary
+
+This test case verifies the DUT's ability to configure and utilize the load-interval parameter for statistics sampling on its interfaces. This parameter determines the time interval over which interface statistics like input/output rates are calculated.
+
+## Testbed type
+
+*  [`featureprofiles/topologies/atedut_2.testbed`](https://github.com/openconfig/featureprofiles/blob/main/topologies/atedut_2.testbed)
+
+## Procedure
+
+### Configuration
+
+1) Create the topology below:
+
+    ```
+    [ ATE Port 1 ] ----  |   DUT   | ---- | ATE Port 2 |
+    ```
+
+2) Configure a non-default load-interval value on an interface on the DUT  (30 seconds).
+
+### Traffic:
+*   Establish a stable traffic flow between ATE1 and ATE2 through the DUT on the configured interface.
+
+### Verification:
+
+*   Initial Observation:
+    *   Observe the interface statistics on the DUT.
+    *   Record the initial input/output rate values.
+*   Load-Interval Impact:
+    *   Clear the interfaces counters.
+    *   Configure the load-interval to a value equal to 30 seconds.
+    *   Use gnmi.Subscribe SAMPLE mode with 10 second interval, capture 3 samples and compute the average pps and bps and compare to the ATE generated flow
+    *   Verify that the input/output rate values have been updated and reflect the average traffic rate over the configured load-interval.
+*   Varying Load-Interval:
+    *   Clear the interfaces counters.
+    *   Change the load-interval to a different value (60 seconds).
+    *   Use gnmi.Subscribe SAMPLE mode with 10 second interval, capture 3 samples and compute the average pps and bps.
+    *   Verify that the input/output rates were not incremented as the sampling time is less that the load-interval
+    *   Use gnmi.Subscribe SAMPLE mode with 10 second interval, capture 6 samples and compute the average pps and bps and compare to the ATE generated flow
+    *   Verify that the input/output rates now reflect the average traffic rate over the new load-interval.
+
+## OpenConfig Path and RPC Coverage
+
+```yaml
+paths:
+  ## Config paths
+  /interfaces/interface/rates/config/load-interval:
+  ## State paths
+  /interfaces/interface/rates/state/load-interval:
+  /interfaces/interface/state/counters/in-octets:
+  /interfaces/interface/state/counters/out-octets:
+rpcs:
+  gnmi:
+    gNMI.Set:
+      union_replace: true
+      replace: true
+    gNMI.Subscribe:
+      on_change: true
+```
+
+## Minimum DUT platform requirement
+* FFF

testregistry.textproto

@@ -789,6 +789,11 @@ test: {
   readme: "https://github.com/openconfig/featureprofiles/blob/main/feature/interface/ip/ipv6_slaac_link_local_test/otg_tests/ipv6_slaac_link_local_test/README.md"
   exec: "https://github.com/openconfig/featureprofiles/blob/main/feature/interface/ip/ipv6_slaac_link_local_test/otg_tests/ipv6_slaac_link_local_test/ipv6_slaac_link_local_test.go"
 }
+test: {
+  id: "RT-5.11"
+  description: "Interface Load-Interval for Statistics Sampling"
+  readme: "https://github.com/openconfig/featureprofiles/blob/main/feature/interface/loadinterval/otg_tests/README.md"
+}
 test: {
   id: "RT-5.2"
   description: "Aggregate Interfaces"