QoS Cheat Sheet

If you’re interested in a really good cheat sheet for QoS, PacketLife has some great ones. It will save you from looking dumb when your brain decides to take a holiday.

It containins information on:

• Quality of Service Models

• Layer 2 QoS Markings

• IP QoS Markings

• QoS Flowchart

• QoS Terminology

• Per-Hop Behaviors

• Congestion Avoidance

• IP Type of Service (TOS)

• Precedence Values

• DSCP Values

• Queuing Comparison Chart

• First In First Out (FIFO)

• Priority Queuing (PQ)

• LLQ Configuration Example

• Custom Queuing (CQ)

• Weighted Fair Queuing (WFQ)

• Class-Based WFQ (CBWFQ)

• Low Latency Queuing (LLQ)

• Troubleshooting QoS

Update

As Packetlife is down, I’ve linked them to wayback machine.

https://web.archive.org/web/20240809085825/https://packetlife.net/library/cheat-sheets/