The agent DmaQueueMonitor provides visibility into packets coming up to the CPU via CPU queues. Packets are continuously sampled on monitored queues and kept available for reporting when a CPU congestion event occurs. When a queue that leads to CPU processing is congested a PCAP file may be created from the sampled packets that were captured from before and after the congestion event.  The PCAP file is written to the file system for off-line examination.

 

Campus hardware flow tracking allows for extensive and fine grained hardware based flow tracking and management

Arista campus switches allow extensive and fine grained hardware based flow tracking and management features. They

Arista campus switches allow extensive and fine grained hardware based flow tracking and management features. They