Catalyst 2960/3560/3750 QoS calculator

Unanswered Question
Mar 14th, 2010

Hey everyone.
Just wanted to let you know that if you ever wanted to  calculate queue and threshold depth of Catalyst 2960/3560/3750, now  there is an easier way.
By reverse engineering memory blocks a bit, I  was able to figure out the memory structure and what those frustrating  percentages mean.
With this calculator you can enter byte values for the queues and it  will generate all the needed commands, check sanity and calculate some  interesting ratios and statistics. You can also check "how many" packets  of certain size will fit there, due to memory structure overhead  (256-Byte cells).
Anyway, check it out, and hopefully it'll enhance your understanding of  Catalyst QoS in the Sasquatch family.

P.S.: All Sasquatch family members have same architectural  approach, so it procedure is the same on 2960 and 3750G alike. 3..0E,  2960S and 3..0X models types have a bit different method of calculation.

I have this problem too.
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