[37962] in Resnet-Forum
Re: New Stratagies to Meet Higher Bandwidther Requirements in the HD Video World
daemon@ATHENA.MIT.EDU (Cal Frye)
Tue Feb 12 12:21:59 2013
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Message-ID: <511A79D4.2080302@calfrye.com>
Date: Tue, 12 Feb 2013 12:20:20 -0500
Reply-To: Resnet Forum <RESNET-L@LISTSERV.ND.EDU>
From: Cal Frye <cjf@CALFRYE.COM>
To: RESNET-L@LISTSERV.ND.EDU
In-Reply-To: <004d01ce0934$123055b0$36910110$@iname.com>
I second Frank's observation. Demand will always increase to fill the
supply, but there is no substitute for more bandwidth. Management is
what you do when the demand catches up with you.
We have 600Mb/s available and 2900 students at Oberlin, and the ResNet
partition (250Mb/s but can borrow from the academic side up to a total
of 400Mb/s - still on the low side of Frank's statistic at 138kbps/FTE)
runs flat-out most evenings. We block P2P generally, permitting it to
specific hosts on request. Not many have actually requested P2P access,
actually. It's mostly streaming media.
It looks like Saint Mary's isn't using much of the DPI capability of
your Packetshaper. You may find another management approach altogether
could suit your needs, but I'd still begin by obtaining more bandwidth
if you can.
- Cal Frye, Oberlin College.
On 2/12/13 10:17 AM, Frank Bulk wrote:
> It’s my assessment that you’re short on bandwidth – most schools have
> 100 to 200 kbps/FTE, so even if you look at just the residences you
> should be at 240 Mbps.
>
> *From:*Resnet Forum [mailto:RESNET-L@LISTSERV.ND.EDU] *On Behalf Of
> *Glenn Sutherland
> *Sent:* Tuesday, February 12, 2013 7:42 AM
>
> I am curious if there have been any new approaches being used to better
> manage the bandwidth requirements of our students today?
>
> Saint Mary’s University has approx. 6000 FTE’s, with 1,200 in
> residence. We have a BlueCoat Packetshaper 10000 which has served us
> very well. We are facing higher bandwidth demands as our students have
> on average 4-6 devices demanding bandwidth for streaming HD video and
> voice. I am sure we are not alone in this situation.
>
> Our campus has a 200M commercial internet connection which is where most
> internet traffic passes, (except Facebook, Netflix, Google, and a couple
> others), and this 200M link is managed by our PacketShaper. In our
> PacketShaper we assign 150M (of the 200) to student traffic, and allow
> it to burst to 175M, needless to say it is always running at 175M. We
> are using the PS Dynamic Sub partitioning to divide the bandwidth evenly
> between active users, and we do not classify based on traffic type (eg.
> Bittorrent, Netflix, etc).
>
> How are you dealing with the increased demand? Are you restricting more
> what users are doing? (Something that would not fly well here).
> Increasing available bandwidth?
>
--
Best Regards,
-- Cal Frye, Network Administrator, Oberlin College
Mudd Library, x.56930 -- CIT will NEVER ask you for your password!
www.calfrye.com, www.oberlin.edu/cit/
'
"Any truth creates a scandal. --Marguerite Yourcenar.
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