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7/30/2019 UK Net Neutrality Panel
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The impact of the iPlayer on UK Broadband Networks
Geoff Bennett, Infinera
The Content Crunch!
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Infinera Confidential and Proprietary | 2
What is todays discussion about?
The launch of the BBC iPlayer is (allegedly)placing a strain of UK broadband networks
In my short introduction Ill explain:
Is this is really true? Why might it be happening?
Who is to blame?
What are the potential solutions?
Then well pass over to the panel for discussion
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On the panel today
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Will iPlayer cause Internet meltdown?
Consider the behaviour of IP traffic
Level at which ordinary apps will fail
Network
Load Level at which streaming video will fail
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Perhaps this isnt the point
Do we really want to build a UK Internet that isengineered to discourage innovative applications?
The answer is clearly no, but who will pay for atruly 21st Century broadband network?
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So where is the iPlayer bottleneck?
Geoffs House
Geoffs ISP
Local Exchange
The BBCs ISP
iPlayer Servers
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My local loop performance
My exchange is not unbundled I am about 1 mile from the exchange
Copper cable, apparently 6Mbit/s is possible
The line card in the DSLAM will run up to 2Mbit/s I receive, and even slightly exceed this figure
It works sometimes,It works sometimes,so it cant be theso it cant be the
local looplocal loop
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Total: 15 Million Subs
8.5M8.5M
3.2M3.2M
3.3M3.3M
Source: Telco 2.0
There are plenty more like me
http://www.telco2.net/blog/2007/11/market_dynamics_uk_broadband_1.htmlhttp://www.telco2.net/blog/2007/11/market_dynamics_uk_broadband_1.html7/30/2019 UK Net Neutrality Panel
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What about the backhaul?
Most likely culprit
Unfortunately no way for me to know for certain ISPs are not required to publish actual backhaul
contention rates, either average (which would bemeaningless) or per-exchange (very useful)
ResidentialResidential
BroadbandBroadband
50:150:1
BusinessBusiness
BroadbandBroadband
20:120:1
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iPlayer: The Perfect Storm?
iPlayer is a bit of a problem for Britains currentbroadband infrastructure
50:1 contention is not sustainable for this kind of application
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Many potential culprits
UK Government For creating a broadband policy that favours quantity over quality
Ofcom For not encouraging greater competition in the backhaul
For not requiring ISPs to publish per-exchange contention rates
ISPs For using 50:1 contention rates in the backhaul
BT Wholesale For making backhaul capacity so expensive
BT Openreach For not rolling out a better local loop
Content providers For clogging up the Internet with interesting applications
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In the ISPs defence
Early broadband adoption tended to create aspectrum of broadband users
Light usersEmailChatOccasional web
Moderate usersHome workersVoIPRich media
Heavy usersP2PGamers
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In the ISPs defence
It would be commercial suicide to engineer thenetwork for a tiny minority of heavy users
Heavy usersP2PGamers
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The problem with the iPlayer
and other popular, high-demand apps
They shift the
general pattern
of Internet use
higher % of heavy
users in theevenings and
weekends
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