[ NNSquad ] Re: Richard Bennett on Comcast and Fairness (from IP)

[Richard Bennett <richard@bennett.com>]

This is exactly what I've got in mind, modeled after the four classes of 
service in WiFi WME. It's a very practical system and easy to check for 
conformance.

RB

Fred Reimer wrote:
> I think you're missing a key understanding of QoS.  That is, for the traffic
> that is tagged as high priority you only get a limited bandwidth.  Say
> 128Kbps.  That would allow you to make a VoIP call, for instance.  Then you
> have your "normal" traffic, which again is capped at some rate, say 1Mbps.
> And finally you have a scavenger class that is not capped.  So if you go
> over your rate for high priority traffic the non-conforming traffic is
> either dropped or retagged by the ISP to the medium priority tag.  In most
> enterprises with QoS configurations it is dropped, because only VoIP or
> other RTP traffic is allowed in the high priority class, and the network is
> designed with a specific load requirement.  Anything above that and someone
> obviously screwed up somewhere.  For medium priority traffic, non-conforming
> traffic would be retagged as scavenger (never just dropped).  And scavenger
> class could use as much bandwidth that they can pump down the wire.
>