CCNP ENCOR 350-401 · Architecture · QoS

QoS essentials

Why congestion hurts voice, and the MQC toolkit that fixes it: classification, DSCP marking at the trust boundary, policing versus shaping, and LLQ/CBWFQ queueing — configured and measured under real load.

62 min read12 chapters2 labs15 quiz8 scenarios15 interview Q&A

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Inside this module

  • Lab · Mark and queue voice over a busy WAN
  • Troubleshoot · The priority queue that never fills
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