Re: BitTorrent swarms have a deadly bite on broadband nets

[Valdis.Kletnieks () vt edu]

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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