The goal is to validate that packet sampling is working as expected, clients can connect to the gNPSI service and receive samples.

• Configure DUT with two ports with IPv4/IPv6 addresses
• Configure sFlow and gNPSI on DUT with following parameters:
  • Sample size = 256 bytes
  • Sampling rate is 1:1M
• Configure OTG traffic with different traffic profiles.
  • IPv4 and Ipv6
  • Varying packet sizes (64, 512, 1500)
• Start OTG traffic

• Start the gRPC client and subscribe to the gNPSI service on the DUT.

• Verify the samples received by the client are as per expectations:

  • Samples are formatted as per the sFLOW datagram specifications.
  • Appropriate number of samples are received based on the sampling raste. e.g. ~1 in 1M samples is received for a sampling rate of 1:1M.
  • Datagram contents are set correctly.
    • Sampling rate is correct
    • Ingress and egress interfaces are correct
    • Inner packets can be parsed correctly

1. Start 2 gRPC clients and subscribe to the gNPSI service on the DUT.

2. Verify each client receives ~1 sample for every 1M packet through the DUT.

• Start a gRPC client and subscribe to the gRPC service on the DUT, and verify the connection is healthy and samples are received.

• Disconnect and reconnect the client, and verifying the reconnection is successful, and samples are received.

• Start a gRPC client and subscribe to the gRPC service on the DUT, and verify the connection is healthy and samples are received.

• Restart the gNPSI service (This can be done by a switch reboot).

• Let the gRPC client try to reconnect to gNPSI service every few seconds. The gRPC client should successfully connect to gNPSI service after gNPSI service is up.

• Verify that the samples are received.

rpcs:
  gnpsi:
    gNPSI.Subscribe:

N/A