Pekka Savola wrote:
>
> On Fri, 17 Aug 2001, Alex Conta wrote:
> > The Diffserv QoS engines in the access routers do a policing
> > (classification&metering&dropping) that trims the high level QoS traffic
> > -- hacked by a user, or not -- to the level specified in SLAs, TCAs. So,
> > a user, at the most, uses up all that was contracted with the ISP, and
> > paid for, anyway. This is in fact THE BEAUTY of THE MODEL.
>
> You seem to assume that you would always spoof to get _better_ service [....]
No, I do not assume at all that one would "always" spoof.
> Also, the idea that an operator might do QoS classification etc. on the
>traffic _for free_ (e.g. add "low delay" to dport 22, 23; low cost to nntp
>etc.) just to benefit the user(s) is unfamiliar to you? [...]
>
I do not assume at all that the provider chooses to do a QoS
classification/policing to only help the customer, or that it does it
for free.
The classification/policing and the rest of QoS, helps also the
provider, it helps maximizing the usage of the provider network, while
optimizing the service that the customers perceive/receive. The customer
is paying usually one bill, that includes everything, the costs for
higher QoS, lower QoS, or non-QoS at all(best effort).
Regards,
Alex
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