[100503] in North American Network Operators' Group
Re: BitTorrent swarms have a deadly bite on broadband nets
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Wed Oct 24 22:01:44 2007
To: michael.dillon@bt.com
Cc: nanog@merit.edu
In-Reply-To: Your message of "Thu, 25 Oct 2007 02:33:35 BST."
<D03E4899F2FB3D4C8464E8C76B3B68B00140E4A7@E03MVC4-UKBR.domain1.systemhost.net>
From: Valdis.Kletnieks@vt.edu
Date: Wed, 24 Oct 2007 22:00:13 -0400
Errors-To: owner-nanog@merit.edu
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On Thu, 25 Oct 2007 02:33:35 BST, michael.dillon@bt.com said:
> I really think that a two-tiered QOS system such as the scavenger
> suggestion is workable if the applications can do the marking. Has
> anyone done any testing to see if DSCP bits are able to travel unscathed
> through the public Internet?
Given the bad track record for PMTU 'frag needed' ICMP, ECN, and anybody
in 69/8, 70/8, 71/8, I'll make the prediction that DSCP bits are mangled in
too many ways to make effective use of them, and we can expect a 3-4 year
effort to get stuff cleaned up before it works as intended.
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