zrp_fec_uncorrectable_frames_test

TRANSCEIVER-10 (400ZR_PLUS): Telemetry: 400ZR_PLUS Optics FEC(Forward Error Correction) Uncorrectable Frames Streaming.

Summary

Validate 400ZR_PLUS optics module reports uncorrectable FEC frames count.

This observable represents the number of uncorrectable FEC frames, measured as RS(544,514) equivalent frames, in a short interval. This is a post-FEC decoder error metric.

Procedure

• Connect two ZR_PLUS interfaces using a duplex LC fiber jumper such that TX output power of one is the RX input power of the other module.
• To establish a point to point ZR_PLUS link ensure the following:
  • Both transceivers state is enabled
  • Both transceivers are set to a valid target TX output power example -3 dBm
  • Both transceivers are tuned to a valid centre frequency example 193.1 THz
• With the ZR_PLUS link established as explained above, verify that the following ZR_PLUS transceiver telemetry path exist and is streamed for both the ZR_PLUS optics.
  • /terminal-device/logical-channels/channel/otn/state/fec-uncorrectable-blocks
• Verify that the reported data should be of type yang:counter64.
• When the modules or the devices are still in a boot stage, they must not stream any invalid string values like "nil" or "-inf".
• Toggle the interface state using /interfaces/interface/config/enabled and verify relevant FEC uncorrectable frame count is streamed. If there are no errors a value of 0 should be streamed for no FEC uncorrectable frames.

OpenConfig Path and RPC Coverage

paths:
    # Config Parameter coverage
    /interfaces/interface/config/enabled:
    /components/component/transceiver/config/enabled:
        platform_type: ["OPTICAL_CHANNEL"]
    # Telemetry Parameter coverage
    /terminal-device/logical-channels/channel/otn/state/fec-uncorrectable-blocks:

rpcs:
    gnmi:
        gNMI.Get:
        gNMI.Set:
        gNMI.Subscribe: