Re: [aqm] I-D Action: draft-ietf-aqm-recommendation-04.txt

[Simon Barber <[e-mail]>]

On 5/18/2015 10:00 AM, Dave Taht wrote:
> LEDBAT was probably my first concern and area of research before 
> entering this project full time. I *knew* we were going to break 
> ledbat, but the two questions were: how badly? (ans: pretty badly) and 
> did it matter? (not that much, compared to saving seconds overall in 
> induced delay)
LEDBAT is about more than just reducing the delay caused by the steam - 
it's also about the bandwidth impact. AQM solves the delay situation, 
but breaks the bandwidth reduction that LEDBAT can achieve today when 
other traffic is present.


> while we have long recommended CS1 be set on torrent, it turns out 
> that a lot of gear actually prioritizes that over BE, still. It helps 
> on the outbound where you can still control your dscp settings. Many 
> torrent users have reported just setting their stuff to max outbound 
> and rate limiting inbound, and observing no real effects on their link.

Do you have examples of the gear that prioritizes CS1 over best effort? 
How often have you seen it? Did you see it in places where it would be 
important?

Simon