[100325] in North American Network Operators' Group
Re: Can P2P applications learn to play fair on networks?
daemon@ATHENA.MIT.EDU (Roland Dobbins)
Sun Oct 21 21:14:31 2007
In-Reply-To: <Pine.GSO.4.64.0710212044510.13069@clifden.donelan.com>
From: Roland Dobbins <rdobbins@cisco.com>
Date: Mon, 22 Oct 2007 08:13:13 +0700
To: nanog <nanog@merit.edu>
Errors-To: owner-nanog@merit.edu
On Oct 22, 2007, at 7:50 AM, Sean Donelan wrote:
> Will P2P applications really never learn to play nicely on the
> network?
Here are some more specific questions:
Is some of the difficulty perhaps related to the seemingly
unconstrained number of potential distribution points in systems of
this type, along with 'fairness' issues in terms of bandwidth
consumption of each individual node for upload purposes, and are
there programmatic ways of altering this behavior in order to reduce
the number, severity, and duration of 'hot-spots' in the physical
network topology?
Is there some mechanism by which these applications could potentially
leverage some of the CDNs out there today? Have SPs who've deployed
P2P-aware content-caching solutions on their own networks observed
any benefits for this class of application?
Would it make sense for SPs to determine how many P2P 'heavy-hitters'
they could afford to service in a given region of the topology and
make a limited number of higher-cost accounts available to those
willing to pay for the privilege of participating in these systems?
Would moving heavy P2P users over to metered accounts help resolve
some of the problems, assuming that even those metered accounts would
have some QoS-type constraints in order to ensure they don't consume
all available bandwidth?
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Roland Dobbins <rdobbins@cisco.com> // 408.527.6376 voice
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