From: gladston@br.ibm.com
Date: Tue Nov 16 2004 - 09:43:43 GMT-3
Hi,
I just found this note about changing on Custom Queue:
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Note CQ was modified in Cisco IOS Release 12.1. When the queue is depleted early, or the last packet from the queue does not exactly match the configured byte count, the amount of deficit is remembered and accounted for the next time the queue is serviced. Beginning with Cisco IOS Release 12.1, you need not be as accurate in specifying byte counts as you did when using earlier Cisco IOS releases that did not take deficit into account.
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_configuration_guide_chapter09186a00800b75a9.html#48685
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No examples. Just the old way of calculating byte-count.
Also, on Wendell and Vegesna, there is no word about this (at least I could not found it).
Would the changing on IOS make the way of implementing CQ be different? For example:
Old Style
tcp http, packet size 1000, bandwidth 20%
udp port 68, packet size 2000, bandwidth 30%
default, packet size 1500
20/1000= 0.02
30/2000= 0.015
50/1500= (default) 0.033
0.02/0.015 = 1.33 -> 2
0.015/0.015 = 1 -> 1
0.033/0.015 = 2.2 -> 3
Byte count would be 2 x 1000 for tcp http
1 x 2000 for udp port 68
3 x 1500 for any other (default)
Now, would it be any different on 12.1 (and after)?
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