SDN/SDDC Retreat in Miami, Florida (November 4th-6th)
Separate SDN hype from real life!

Software and hardware queues in FIFO queuing

I ran a few tests to document the differences between the fair queuing and FIFO queuing in Cisco IOS as well as the impact of queuing mechanism on the software/hardware queue used. The results are stored on CT3 wiki.


  1. Thanks very much for your lower level queuing explanations, much appreciated over here.

    I couldn't leave a comment for

    because the comment link points to


  2. Thanks for the comment-related bug report. It was a problem in my modifications to the Blogger template. Should be fixed now.

  3. This is good topic and well explanation. This is very core concept in queuing system like LIFO and FIFO.
    Great Work :)


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Ivan Pepelnjak, CCIE#1354 Emeritus, is an independent network architect. He has been designing and implementing large-scale data communications networks as well as teaching and writing books about advanced technologies since 1990. See his full profile, contact him or follow @ioshints on Twitter.