nanog mailing list archives
Re: Can P2P applications learn to play fair on networks?
From: Sean Donelan <sean () donelan com>
Date: Sun, 21 Oct 2007 11:42:55 -0400 (EDT)
On Sun, 21 Oct 2007, Florian Weimer wrote:
If its not the content, why are network engineers at many university networks, enterprise networks, public networks concerned about the impact particular P2P protocols have on network operations? If it was just a single network, maybe they are evil. But when many different networks all start responding, then maybe something else is the problem.Uhm, what about civil liability? It's not necessarily a technical issue that motivates them, I think.
If it was civil liability, why are they responding to the protocol being used instead of the content?
So is Sun RPC. I don't think the original implementation performs exponential back-off.
If lots of people were still using Sun RPC, causing other subscribers to complain, then I suspect you would see similar attempts to throttle it.
If there is a technical reason, it's mostly that the network as deployed is not sufficient to meet user demands. Instead of providing more resources, lack of funds may force some operators to discriminate against certain traffic classes. In such a scenario, it doesn't even matter much that the targeted traffic class transports content of questionable legaility. It's more important that the measures applied to it have actual impact (Amdahl's law dictates that you target popular traffic), and that you can get away with it (this is where the legality comes into play).
Sandvine, packeteer, etc boxes aren't cheap either. The problem is givingP2P more resources just means P2P consumes more resources, it doesn't solve the problem of sharing those resources with other users. Only if P2P shared network resources with other applications well does increasing network resources make more sense.
Current thread:
- What can you use DSCP for?, (continued)
- What can you use DSCP for? Sean Donelan (Oct 30)
- Re: Can P2P applications learn to play fair on networks? Joe Greco (Oct 26)
- Re: Can P2P applications learn to play fair on networks? Sean Donelan (Oct 26)
- Re: Can P2P applications learn to play fair on networks? Jack Bates (Oct 22)
- RE: Can P2P applications learn to play fair on networks? Frank Bulk (Oct 22)
- Re: Can P2P applications learn to play fair on networks? Rich Groves (Oct 22)
- RE: Can P2P applications learn to play fair on networks? Frank Bulk (Oct 22)
- Re: Can P2P applications learn to play fair on networks? Rich Groves (Oct 22)
- RE: Can P2P applications learn to play fair on networks? Frank Bulk (Oct 23)
- RE: Can P2P applications learn to play fair on networks? Frank Bulk (Oct 22)
- Re: Can P2P applications learn to play fair on networks? Gadi Evron (Oct 22)
- Re: Can P2P applications learn to play fair on networks? Mikael Abrahamsson (Oct 21)
- Re: Can P2P applications learn to play fair on networks? Sean Donelan (Oct 21)
- Re: Can P2P applications learn to play fair on networks? Mikael Abrahamsson (Oct 21)
- Re: Can P2P applications learn to play fair on networks? Sean Donelan (Oct 21)
- Re: Can P2P applications learn to play fair on networks? Joe Greco (Oct 21)
- Re: Can P2P applications learn to play fair on networks? Sean Donelan (Oct 21)
- Re: Can P2P applications learn to play fair on networks? Matthew Kaufman (Oct 21)
- Re: Can P2P applications learn to play fair on networks? Eric Spaeth (Oct 21)
- Re: Can P2P applications learn to play fair on networks? Mikael Abrahamsson (Oct 21)
- RE: Can P2P applications learn to play fair on networks? Frank Bulk (Oct 22)