Residential BW Planning

Frank Bulk frnkblk at iname.com
Tue Aug 11 22:06:04 CDT 2009


We have calculated our customers peak b/w usage between 20 and 60 kbps/user,
spread across a wide variety of users and wide range of speeds (128/128 up
to 15000/1000 kbps).  You only need a few heavy users to skew things.  But
400 at 4 Mbps would make me think that 20 to 30 Mbps would be sufficient.

Frank

-----Original Message-----
From: sjk [mailto:sjk at sleepycatz.com] 
Sent: Tuesday, August 11, 2009 7:11 PM
To: nanog at nanog.org
Subject: Residential BW Planning

I am trying to perform some capacity planning for some of our
residential pops, but the old calcs I used to use seem useless -- as
they were adapted from the dialup days and relied upon a percentage of
users online (~50%) and a percentage of concurrent transmission (~19%).
My present scenario involves a micro-pop terminating 250 residences
where users are expecting 4 mb/s. So I am looking for some baseline to
begin at, so I am wondering what others are doing.

Any thoughts are appreciated.

Thanks
--steve






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