QoS cheat sheet

By stretch | Monday, May 12, 2008 at 1:54 p.m. UTC

This one took a while to come up with, but I think I finally managed to include all of the right information. Taken from the bulk of the Cisco Press CCNP ONT study guide, I hope the information provided here portrays an accurate account of the different QoS markings, terminology, and queuing methods.

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UPDATE: Corrected an error listing CQ as the default queuing method for interfaces slower than 2 Mbps (it should be WFQ). Thanks to Chris Noon for catching this!

About the Author

Jeremy Stretch is a freelance networking consultant, instructor, and the maintainer of PacketLife.net. He currently lives in Fairfax, VA on the edge of the Washington, DC metro area. Although primarily an R&S guy, he likes to get into everything, and runs a free Cisco lab out of his basement for fun. You can contact him by email or follow him on Twitter.

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Comments

Rodrigo (guest) commented on Monday, May 12, 2008 at 2:43 p.m. UTC

How do you accomplish this? You create perfect cheat sheets !

Congratulations.

Chris Noon (guest) commented on Monday, May 12, 2008 at 3:44 p.m. UTC

Great doc! The Queueing comparison chart needs to be corrected. Default on interfaces states CQ on <= 2 Mbps.

Joe L (guest) commented on Monday, May 19, 2008 at 7:01 p.m. UTC

Great cheat sheet, 1 minor typo in the Terminology section.

Shaping ยท Similar to POLICING but buffers excess traffic for delayed transmission; makes more efficient use of bandwidth but introduces a delay

WWN (guest) commented on Saturday, May 31, 2008 at 4:46 a.m. UTC

That's going on the wall at work. Very nice.

Mike A. (guest) commented on Sunday, June 1, 2008 at 2:13 a.m. UTC

Very professional looking!

Assasin229 (guest) commented on Friday, June 6, 2008 at 1:07 a.m. UTC

Hi! Thanks for the wonderful cheatsheets! Were very useful!!!

redkurawa (guest) commented on Friday, October 17, 2008 at 3:00 p.m. UTC

cool

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