Re: QoS/CoS in the real world?

[Peter John Hill <peterjhill () cmu edu>]

--On Sunday, July 14, 2002 9:26 PM -0400 Art Houle 
<houle () zeppo acns fsu edu> wrote:

> On Sun, 14 Jul 2002, Marshall Eubanks wrote:

> > On Sun, 14 Jul 2002 21:13:13 -0400 (EDT)
> >  Art Houle <houle () zeppo acns fsu edu> wrote:
> > Or, to put it another way, how are the packets marked ? And why not just
> > drop them then and there, instead of later ?

> If we are not using our WAN connections to capacity, then p2p traffic can
> expand and fill the pipe, but if business packets are filling the pipes,
> then the p2p stuff is throttled back. This makes 100% use of an expensive
> resource.

So, you are doing straight tcp port filtering. Are there any clients that 
use dynamic ports? Things will get trickier for you. Other than Packetteer, 
are there any other products that can look into the data of a packet at any 
usable rate to do filtering/marking?