[AusNOG] the state of bufferbloat awareness and remediation in australia?

Dave Taht dave.taht at gmail.com
Sun Jan 26 13:28:51 EST 2020

Ladies and gentlemen! Ryan Mounce has entered the room! Ryan
contributed the ack-filtering code in sch_cake several years ago. All
Hail Ryan! Cake ( https://lwn.net/Articles/758353/ )has been available
out of tree for linux for 5 years (with maintained backports all the
way back to linux 3.10) and it finally went upstream in linux 4.19.
Please note that as much as I like cake, the sqm scripts go back even
further (and also allow for configuring not just fq_codel but pie)

On Sat, Jan 25, 2020 at 5:52 PM Ryan Mounce <ryan at mounce.com.au> wrote:
> NBN Co do inject options into DHCP and PPPoE requests with the down/up sync rate for their wholesale xDSL services so that ISPs (RSPs in NBN lingo) can shape individual services correctly. I have no sense how widely ISPs are actually taking advantage of this.

Well, I try to keep kicking em along. As noted in my previous message
we're seeing a couple ISPs in germany move on this (free.fr in france
adopted this stuff in 2012, everybody else is lagging somewhat :/)
It's only a few line of shell script hook into the negotiation phases
at this point. A days worth of work. Or less. And as for "correctly",
well, I keep hoping folk will leverage the sqm-scripts and/or cake -
when available. Aside from the fritzbox (which I know has fq_codel in
it), are there any other common home routers with a reasonably modern
linux or freebsd os in 'em?

Do you have any insight into the DHCP message?

who "owns" the end-user router in australia now?

anyway, my talk at linux.conf.au (and blatant plug #2) is reviewed now
at: https://blog.apnic.net/2020/01/22/bufferbloat-may-be-solved-but-its-not-over-yet/

great to see you here, ryan,

> -Ryan
> On Fri, 17 Jan 2020 at 11:24, Dave Taht <dave.taht at gmail.com> wrote:
>> Hi, all. I'm here at linux.conf.au having just given a talk about how
>> tcp works in the bufferbloated age[1].
>> On my way here I stopped in for a few days with geoff huston and
>> george michaelson who filled my ears with the chaos of the NBN rollout
>> and other issues in the australian network infrastructure... and gave
>> me a shot at some data they had on bloat, and ecn usage in the wild
>> which I hope to write up over the next month or so.
>> I was wondering about a few things:
>> How y'all doing on eliminating bufferbloat from your networks? Using
>> things like fq_codel, sch_fq + bbr, etc?
>> Do you have any awareness from your regulatorium?
>> I see, from sites like whirlpool, that some consumer hardware here,
>> like the fritzbox, have fq_codel now, but it's not clear if ISPs are
>> actively configuring it (or what we call "sqm") yet. (theres a PPPoe
>> message now in use in parts of germany for up/down and frame rate
>> seeing increasing deployment).
>> Lastly:
>> Anyone need a wayward network researcher/theorist for a few weeks or
>> months to help address their bufferbloat issues in their stacks and
>> hw? - maybe not this trip but on some other occasion?
>> (I rather like hanging in australia)
>> [1] blatant plug  http://youtu.be/ZeCIbCzGY6k
>> --
>> Make Music, Not War
>> Dave Täht
>> CTO, TekLibre, LLC
>> http://www.teklibre.com
>> Tel: 1-831-435-0729
>> _______________________________________________
>> AusNOG mailing list
>> AusNOG at lists.ausnog.net
>> http://lists.ausnog.net/mailman/listinfo/ausnog
> --
> Regards,
> Ryan Mounce
> ryan at mounce.com.au
> 0415 799 929
> Sent from mobile

Make Music, Not War

Dave Täht
CTO, TekLibre, LLC
Tel: 1-831-435-0729

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