QoS Basics

QoS Mar 21, 2011

Characteristics that QoS can effect;

  • Bandwidth
  • Delay
  • Jitter (Delay Variation)
  • Packet loss

QoS Tools that effect bandwidth;

  • Compression
  • CAC (Call Admission Control)
  • Queuing

Types of delay;

  • Serialisation (fixed)
  • Propogation (fixed)
  • Queuing (variable)
  • Forwarding/Processing (variable)
  • Shaping (variable)
  • Network (variable)
  • Codec (variable)
  • Compression (variable)

QoS tools that affect delay;

  • Queuing
  • Link Fragmentation and interleaving
  • Compression
  • Traffic Shaping

QoS tools that effects Jitter;

  • Queuing (CQ, MDRR, CBWFQ)
  • Link Fragmentation and interleaving
  • Compression
  • Traffic Shaping

QoS tools that effect loss

  • Queuing
  • RED
  • WRED

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Rob Edwards

Northern (UK) chap focusing on platforms, automation, cloud and cloud native applications. Recovering network engineer, although it turns out networking is as important, if not more, now than before!