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Re: Can P2P applications learn to play fair on networks?
On Fri, 26 Oct 2007, Sean Donelan wrote:
If Comcast had used Sandvine's other capabilities to inspect and drop particular packets, would that have been more acceptable?
Dropping random packets (i.e. FIFO queue, RED, not good on multiple-flows)
Dropping a limited ratio of the packets is acceptable at least to me.
Sending a TCP RST (i.e. most application protocols respond, easy for out-of-band devices)
... but terminating the connection is not. Spoofing packets is not something an ISP should do. Ever. Dropping and/or delaying packets, yes, spoofing, no.
Changing IP headers (i.e. ECN bits, not implemented widely, requires inline device)
These are all acceptable, where I think the adjust MSS is bordering on intrusion in customer traffic. An ISP should be in the market of forwarding packets, not changing them.
-- Mikael Abrahamsson email: [email protected]