Contention/Oversubscription maths

Jay Ashworth jra at
Fri May 27 14:28:41 UTC 2011

----- Original Message -----
> From: "Adam Armstrong" <lists at>

> Statistics and graphs i've seen offlist have been very helpful, and
> suggest that 1000 100mbit customers is doable on 1GE.


> Atleast, today. Next year's (decade?) launch of the YouView platform in
> the UK should increase usage a lot, not to mention a service like
> Netflix starting in the UK. We have some movie streaming services, but
> they generally suck and are quite low bitrate.

The short version is: if you oversubscribe, you *will* eventually have Busy
Hours, just like telcos.  The question is: how often.  Telcos have books
that tell them this...

-- jr 'Royal Wedding' a
Jay R. Ashworth                  Baylink                       jra at
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates         2000 Land Rover DII
St Petersburg FL USA             +1 727 647 1274

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