Spectrum-X course / Module 3
Spectrum-X Ethernet AI fabrics with Cumulus Linux
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0 of 5 cases closed
RoCE QoS
RoCE QoS: classification, PFC, ECN and buffers
Turn a switch into a lossless RoCE fabric with one command, then know precisely what that command did, how to tune it, and which four counters answer 'RoCE is slow'.
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- Checkpoint
- A case closes when the lesson’s retrieval check reaches 80%.
Lessons and checkpoint
- 3.1How a RoCE packet gets classifiedThe DSCP that cannot existUnderstand25 min
- 3.2`nv set qos roce`: the one command and its five modesFive minutes, low riskApply30 min
- 3.3Tuning the lossless edge: PFC headroom, ECN thresholds, watchdogZero drops, and nothing is movingAnalyze35 min
- 3.4Packet trimming and `lossy-multi-tc`Enable trimming everywhere, next TuesdayAnalyze30 min
- 3.5Playbook: 'RoCE is slow'The ticket that says only 'RoCE is slow'Analyze30 min
- Module 3 checkpoint14 questions · pass mark 80% · 12 min