The "What Just Happened" (WJH) service on Cumulus switches provides real-time visibility into network problems by monitoring various layers and components, including layer 1, layer 2, layer 3, tunnel, buffer, and Access Control List (ACL) related issues. WJH streams detailed and contextual telemetry data, enabling administrators to diagnose and troubleshoot network problems effectively.
Reference Extracts from NVIDIA Documentation:
"WJH can monitor layer 1, layer 2, layer 3, tunnel, buffer and ACL related issues."
"The WJH service enables you to diagnose network problems by looking at dropped packets."
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