CBWFQ bandwidth percent command

From: Toh Soon, Lim (tohsoon28@gmail.com)
Date: Fri Aug 17 2007 - 20:29:24 ART


Hi All,

I have the following policy-map:

!
policy-map MYPOL
 class Web
  bandwidth percent 40
 class Email
  bandwidth percent 30
 class Management
  bandwidth percent 15
!

I received the following error message when applying it on interface s0/0:

R8(config-if)#service-policy output MYPOL
I/f Serial0/0 class Management requested bandwidth 15%, available only 5%
I think it has something to do with the "max-reserved-bandwidth" which is by
default 75% of interface bandwidth. I was under the impression that only
"bandwidth <kbps>" commands in the policy-map are subjected to this 75%. And
"bandwidth percent" commands are assessed against the total interface
bandwidth, which in my case is 1544 Kbit.

Solution:

R8(config)#int s 0/0
R8(config-if)#max-reserved-bandwidth 100
R8(config-if)#service-policy output MYPOL
R8(config-if)#do sh run int s 0/0
Building configuration...

Current configuration : 182 bytes
!
interface Serial0/0
 ip address 172.30.78.1 255.255.255.254
 max-reserved-bandwidth 100
 service-policy output MYPOL
end

I guess I'm probably wrong about my understanding. Can I hear any opinions?

Thank you.

B.Rgds,
Lim TS



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