RE: Nested MQC

From: Henk de Tombe (henk.de.Tombe@qi.nl)
Date: Wed Apr 18 2007 - 19:20:23 ART


Hi Duane,

I've been reading the following link after I got home:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hq
os_c/part20/ch10/qsbcbts.htm

It seems that you can only build a two level hierarchy, see the text
from the link above:

If you want to use CBWFQ with the Class-Based Traffic Shaping mechanism,
the following conditions must be met:

*A secondary-level (child) policy map must be created. This
secondary-level (child) policy map is then used to configure CBWFQ by
enabling the bandwidth command.

*Traffic shaping must be configured in the primary-level (parent) policy
map.

Regards,
Henk

Met vriendelijke groet,
 
Q&I
 
Henk de Tombe
Network Engineer
Q&I NEDERLAND BV
Delftech Park 35 - 37
P.O. Box 402 - 2600 AK DELFT
Phone [+31] 15-8880444 - Fax [+31] 15-8880445
info@qi.nl - www.qi.nl
-----Oorspronkelijk bericht-----
Van: Duane Dewitt [mailto:Duane.Dewitt@za.verizonbusiness.com]
Verzonden: woensdag 18 april 2007 7:20
Aan: Henk de Tombe; ccielab@groupstudy.com
Onderwerp: RE: Nested MQC

Hi Henk

Yup, that's what I've found. If I put shaping in the aggregate policy
for each BU and apply the aggregate as a policy then it is accepted. If
I do the same, but apply the Global-Egress policy it tells me "GTS : Can
be enabled only at the first level".

If I apply the aggregate policy it seems to be fine, however that isn't
in line with the cisco documentation on three-level hierarchy policy.

-----Original Message-----
From: Henk de Tombe [mailto:henk.de.Tombe@qi.nl]
Sent: Tuesday, April 17, 2007 5:01 PM
To: Duane Dewitt; ccielab@groupstudy.com
Subject: RE: Nested MQC

Hi Duane,

Looking at your configuration you'll need more shaping configuration in
your deeper nested policy-maps. The Global-Egress policy-map is
configured with shaping, but the aggregate policy-map isn't.

I've got no router to test it on to see If this is your problem.

Just my 0.02

Regards,
Henk

-----Oorspronkelijk bericht-----
Van: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Namens Duane
Dewitt
Verzonden: dinsdag 17 april 2007 14:10
Aan: ccielab@groupstudy.com
Onderwerp: Nested MQC

Hi All

When I try to attach the below three-level hierarchy policy to an
interface it tells me "CBWFQ : Hierarchy supported only if shaping is
configured in this class" Any ideas if this is a code issue or am I
doing something wrong?

class-map match-all BU1-High-Traffic

  match access-group 151

class-map match-all BU1-Medium-Traffic

  match access-group 152

class-map match-all BU1-Low-Traffic

  match access-group 153

class-map match-all BU2-High-Traffic

  match access-group 154

class-map match-all BU2-Medium-Traffic

  match access-group 155

class-map match-all BU2-Low-Traffic

  match access-group 156

class-map match-all BU1

class-map match-all BU2

policy-map BU1

  class BU1-High-Traffic

   set dscp cs4

   bandwidth 128

  class BU1-Medium-Traffic

   set dscp af23

   bandwidth 256

  class BU1-Low-Traffic

   set dscp af12

   bandwidth 512

policy-map BU2

  class BU2-High-Traffic

   set dscp cs4

   bandwidth 512

  class BU2-Medium-Traffic

   set dscp af23

   bandwidth 1024

  class BU2-Low-Traffic

   set dscp af12

   bandwidth 1536

policy-map Aggregate

  class BU1

   service-policy BU1

  class BU2

   service-policy BU2

policy-map Global-Egress

  class class-default

   shape average 10000000

   service-policy Aggregate

!

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Duane de Witt
Technical Sales Consultant
CCIE #15715

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