[26772] in resnet
Re: Bandwidth Management - Dynamic Allocation?
daemon@ATHENA.MIT.EDU (Adam Forsyth)
Sun Sep 25 21:20:38 2011
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Date: Sun, 25 Sep 2011 20:18:48 -0500
Reply-To: Resnet Forum <RESNET-L@listserv.nd.edu>
From: Adam Forsyth <forsytad@luther.edu>
To: RESNET-L@listserv.nd.edu
In-Reply-To: <001a01cc7a3d$7932fc40$6b98f4c0$@edu>
Randall,
The NetEqualizer employs both a limit on the total number of
connections a single client can make. In addition to that it employs
techniques to add small delays to certain large persistant connections
based on a few simple parameters you set up. The connection limiting
keeps P2P under control and keeps it from overwhelming the network
With previous traffic shaping appliances that we've used in the past,
I had come to the conclusion that I was fighting a loosing battle
because though it classified a lot of the traffic correctly, it got it
wrong plenty often. If the classification was wrong then my rules
didn't work as intended. Particularly at that time and on that
appliance it was that encrypted P2P would get classified as https and
then according to my rules be given a high priority rather than a low
one.
We've had our NetEqualizer for about 3 years now, and I've been very
happy with the fact that it both seems to make our users happy, and
requires very little time be spent managing it.
On Fri, Sep 23, 2011 at 5:09 PM, Randall Watanabe <randallw@hawaii.edu> wrote:
> Hello All,
>
> We currently have a Packetshaper that is at the limits of its capabilities
> and we are looking to upgrade. I've searched through this and various other
> lists for information on solutions from Procera, Exinda, and the
> NetEqualizer, but was wondering if there is a simple solution out there that
> basically just takes all the devices online, and carves up the available
> bandwidth equally.
>
> We currently use our Packetshaper in this manner via dynamic partitioning
> and if there is a low cost solution that manages bandwidth in this way
> without doing the layer7 application analysis, that would be very tempting.
>
> I had originally hoped that the NetEqualizer took this approach, but my
> understanding is that it allocates the bandwidth equally based on flow, not
> device (IP). It seems to me that that approach would favor P2P type
> applications that open up a bunch of connections at relatively low bitrates.
>
>
> We have ~4000 users and anticipate managing somewhere around 1Gbps in
> bandwidth within a few , so any solution we look at would have to be able to
> manage those kinds of numbers.
>
> Thanks in advance for any responses.
>
> Randall Watanabe
> ResNet Computer Specialist
> UH Student Housing Services
>
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--
Adam Forsyth
Director of Network and Systems
Luther College
Library and Information Services
700 College Drive
Decorah, IA 52101
563-387-1402
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