[c-nsp] Subrate speed on GigE requiring QoS / Policer configuration

[Chris Evans]

Sweet.. Thanks Ben! Exactly what

On Tue, Oct 5, 2010 at 11:21 PM, Benjamin Lovell <belovell at cisco.com> wrote:

> You have to use a hierarchical policy to create congestion at the desired
> BW. Parent policy creates congestion at desired point and then child policy
> classifies and queues under congestion.
>
> See pseudo config example.
>
> class-map EF
> match EF
> class-map AF
> match AF
> class-map NC
> match NC
>
> policy-map child
> class EF
> priority 2M
> class AF
> bandwidth 2M
> class NC
> bandwidth 500K
>
> policy-map parent
> class-default
> shape average 15M
> policy-map child policy
>
>
> interface GE
> service-policy parent
>
>
> -Ben
>
>
> On Oct 5, 2010, at 10:49 PM, Chris Evans wrote:
>
> > I'm struggling to come up with a solution for my requirement..
> Essentially
> > we are building a lab using GRE to link two sites over our enterprise
> > network. As this is a lab we want to limit the bandwidth that comes out
> of
> > the LAB to 15megabits, but using GigE for the physical connection on an
> > asr1k. Essentially my first thought was implement a policer on the egress
> > interface limiting the maximum aggregate traffic to 15Mb, then qos
> scheduler
> > on the tunnel interface or egress GigE. I need to prioritize certain
> traffic
> > leaving the lab so I also want to use a scheduler to make sure that the
> > voice traffic has priority and has a 2Mb of traffic for example.
> >
> > I want to limit my EF traffic to 2Mb, AF to 2Mb, NC to 500Kb and best
> effort
> > to 10.5Mb under signs of congestion within that 15Mb CIR. My challenge is
> > that QoS only kicks in under signs of congestion, how would you allow the
> > dynamic bandwidth allocation when the egress interface is really a GigE?
> >
> > Anyone have a good configuration that would fit my needs?
> >
> > Thanks
> >
> > Chris
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