Policy map question

All,

I have a policy map question and want know what is the difference in the QOS
flow behavior between the two child policy definition

Policy-map parent-E2E
Class class-default
Shape average 10000000
Service policy child-E2E

#1
Policy-map child-E2E
Class class-default
Bandwidth percent 100

#2

Policy-map child-E2E
Class E2E
Bandwidth percent 50
queue-limit 500
Class class-default
Bandwidth percent 50

What is the difference in the QOS behavior if I use #2 child policy instead of
#1 when the traffic peaks to 10Mbps but all matches the class E2E. I
thought the behavior would be same because even though option #2 has only 50%
in E2E class , it would borrow the bandwidth from the default-class when
traffic needs more. But what is noticed is that when I use option #1, there
are no queue-drops but with option #2, I see huge queue drops ?? why ??

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Received on Thu Sep 22 2011 - 20:03:29 ART