[AusNOG] News: Telstra to clamp down on peer-to-peer

[Mark Andrews]

In message <1360200758.86247.YahooMailNeo at web164505.mail.gq1.yahoo.com>, Tony w
rites:
> 
> 
> >________________________________
> > From: Mark Smith <markzzzsmith at yahoo.com.au>
> >To: Phillip Grasso <phillip.grasso at gmail.com>; Joshua D'Alton <joshua at railgu
> n.com.au> 
> >Cc: "AusNOG at lists.ausnog.net" <ausnog at lists.ausnog.net> 
> >Sent: Thursday, 7 February 2013 6:31 AM
> >Subject: Re: [AusNOG] News: Telstra to clamp down on peer-to-peer
> > 
> >
> >Given the dramatic increases in access circuit speed that the NBN is going t
> o provide, I think these protocol aware traffic throttling devices are only g
> oing to become more common.
> >
> 
> 
> If you've got a DSLAM with a few hundred ports (how many ports would the aver
> age Telstra DSLAM have ?) and you upgrade the DSLAM to be ADSL2 so that each 
> line is capable of 20Mbps, you then have a potential demand for 4Gbps of traf
> fic (200 x 20, yes ignoring that all lines won't sync at 20M). If the backhau
> l to your DSLAM is only GigE fibre and it's starting to congest what do you d
> o ? You have two options:

Well you should have thought of that before upgrading the DSLAM.  Part of
upgrading a DSLAM is working out how to do the back haul.
 
> 1. Upgrade backhaul. Telstra more than likely has the fibre to do it, but upg
> rading to 10G would be a costly exercise I imagine. You have to replace cards
>  in all of your DSLAM if that is even possible with the model DSLAMs they hav
> e.
> 
> 2. Shape/throttle/limit the traffic that is causing you to exceed the backhau
> l capacity
> 
> 
> If your backhaul isn't even GigE and is instead an OC3 (155Mbps) or OC12 (622
> Mbps) then they would be hitting the congestion sooner.
> 
> 
> >Perhaps one way to make the "P2P'ers" happy would be to use these DPI device
> s to mark this traffic as scavenger class, and then give it to them for free,
>  or some how making it much much cheaper e.g. 1/10th of the price of non-scav
> enger class traffic, filling up the "white space" in the network when capacit
> y is unused. ISPs would then be getting some form of value return on their no
> rmally unutilised link capacity.
> 
> If they do it properly and only limit the speed on stuff that people can't co
> mplain about (ie. not quite legit things) then nobody will complain and Telst
> ra can put off upgrading backhaul. This comes back to the majority of users n
> ot noticing because their web browsing (youtube, facbook, itunes, etc) isn't 
> impacted and might actually get faster.
 
Downloading the latest Linux ISO via bittorrent is just as legitimate
as downloading the lastest music video via itunes.  If I was paying
Telstra and my neigbour was getting preferential treatment for the
same nominal service for the same price I would be furious.

> With the NBN rolling out and people shifting to other technologies (NBN, wire
> less or Telstra/Optus cable) the backhaul demand for DSLAMs might taper off a
> nd drop in the next 2-5 years so perhaps Telstra see the prospect of an expen
> sive 10G backhaul upgrade as a loss and this option as the better one. Sure i
> f your demand is going to keep increasing then you're just putting off the in
> evitable, but if your forecast shows that your demand is only going to increa
> se by another 20% then drop off again, why not look at options to put off hav
> ing to upgrade because it's just a wasted investment that you'll never recoup
> .
> 
> 
> 
> regards,
> Tony.
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org