[c-nsp] Cisco IOS/XE :: H-QoS for Multi-VRF / Sub-interface setup

Brian Turnbow b.turnbow at twt.it
Fri Jun 24 08:54:17 EDT 2016

Hi Niel,

Fragment creates an upper level so to speak, bandwidth that you can use in 
your policies

You create   an aggregate policy and declare a service fragment tag

policy-map aggregate-member-link
  class BIGAGG service-fragment aggr1
  shape average 10000000

and then use it in your parent policy

policy-map parent
  class class-default fragment aggr1
  shape average 5000000
  service-policy child-if-needed

 The aggregate goes to the main interface
interface GigabitEthernet0/0/3
no ip address
load-interval 30
negotiation auto
service-policy output aggregate-member-link

And the policies go on the sub interfaces

interface GigabitEthernet0/0/3.10
encapsulation dot1Q 10
ip address
service-policy output parent
interface GigabitEthernet0/0/3.11
encapsulation dot1Q 11
ip address
service-policy output parent

 interface GigabitEthernet0/0/3.12
encapsulation dot1Q 12
ip address
service-policy output parent



From: neil.g.morris at gmail.com [mailto:neil.g.morris at gmail.com] On Behalf Of 
Sent: venerdì 24 giugno 2016 14:25
To: Brian Turnbow
Cc: cisco-nsp at puck.nether.net; eyeballi77 at gmail.com
Subject: Re: [c-nsp] Cisco IOS/XE :: H-QoS for Multi-VRF / Sub-interface 

Thanks Brian for your response,

I have also looked into this also under our previous topic 
(http://goo.gl/wmVffr), but I believe this approach shares the default class 
through the fragment key word (if I understand it correctly).

The key point that I need input on is the ability to use qos-groups across 
the multiple VRF's to shape the common traffic classes to a single 

On 24 June 2016 at 12:23, Brian Turnbow <b.turnbow at twt.it> wrote:

try taking a look at service-fragment.
It will work on subinterfaces, but I'm not sure about using it with
different vrfs.....



> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> eyeballi77
> Sent: venerdě 24 giugno 2016 10:45
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Cisco IOS/XE :: H-QoS for Multi-VRF / Sub-interface
> Hi all,
> Can you help clarify for me on my understanding of the above.  I have a
> 10Mb cct and want share the overall bandwidth across all VRF's/sub-
> interfaces as opposed to dedicating specific chunks of bandwidth to
> VRF/interfaces.
> By placing the parent policy on the physical interface with multiple
> policies relating to each of the VRF's.
> My thinking being that traffic will be classified from each vrf to a
> and the child policies with match/police/shape based on the qos-groups.
> Appreciate any guidance/input
> Neil
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