[c-nsp] understanding "shape average" option in IOS nested policy-maps

[Martin T]

Turns out, that according to "sh ip access-lists" and "sh policy-map
int Fa0/0", "VIDEOCONFERENCE-TRAFFIC" is not matched in second
example. Access-list entry, which is used for classifying traffic to
"VIDEOCONFERENCE-TRAFFIC" traffic class, is correct. That's the reason
why I achieved 14.5Mbps in second example as there was no traffic
matched to "VIDEOCONFERENCE-TRAFFIC" class. However, could somebody
explain why "VIDEOCONFERENCE-TRAFFIC" is ignored in my second
configuration example?


regards,
Martin

On 1/28/14, Martin T <m4rtntns at gmail.com> wrote:
> Hi,
>
> using policy-map "SHAPER-OUTGOING-TRAFFIC" configured as seen below:
>
> !
> policy-map VIDEOCONFERENCE-TRAFFIC
>  class VIDEOCONFERENCE-TRAFFIC
>   priority 4500
> policy-map SHAPER-OUTGOING-TRAFFIC
>  class class-default
>   shape average 14500000
>   service-policy VIDEOCONFERENCE-TRAFFIC
> !
>
> ..on interface facing the Internet in outgoing direction, I'm able to
> upload traffic at 10Mbps in total. I send traffic to "class-default"
> traffic class and "VIDEOCONFERENCE-TRAFFIC" traffic class
> simultaneously.
>
>
> If I use policy-map below:
>
> !
> policy-map VIDEOCONFERENCE-TRAFFIC
>  class VIDEOCONFERENCE-TRAFFIC
>   priority 4500
> policy-map SHAPER-OUTGOING-TRAFFIC
>  class INTERNET-TRAFFIC
>   shape average 14500000
>   service-policy VIDEOCONFERENCE-TRAFFIC
>  class class-default
> !
>
> ..on interface facing the Internet, I'm able to upload
> "INTERNET-TRAFFIC" class traffic at 14.5Mbps. I send traffic to
> "INTERNET-TRAFFIC" class, "VIDEOCONFERENCE-TRAFFIC" and
> "class-default" traffic class at the same time.
>
>
> Platform is Cisco 2801 and IOS image is
> c2801-advipservicesk9-mz.124-15.T3.bin. Why is "shape average"
> subtracted in first example(14500000 - 4500000 = 10Mbps) while it was
> not subtracted in second example?
>
>
>
> regards,
> Martin
>