[c-nsp] Improved queuing in 12.4(20)T?

[Per Carlson]

Hi Oli.

> I haven't looked at HQF for a while, but I recall the H-QoS scenario
> you're using benefits especially from HQF as the parent shaper is aware
> of the LLQ within the child, but not entirely sure about this. It would
> explain the improved behaviour, though.

I have always had the impression that the parent shaper *is* aware of
the child policy. Otherwise the whole H-QoS scheme is rather useless,
at least with respect to LLQ/PQ.

So far I haven't found any references on CCO confirming either
possibility (aware/unaware). The closest match is a configuration
example[1] with a priority queue in the child, but it says nothing
about awareness in the parent. And there is this note about
subinterfaces/PVCs...

[1] http://www.cisco.com/en/US/docs/ios/qos/configuration/guide/qos_mqc_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1060235

-- 
Pelle