> Well, most p2p apps live on well-known ports, and Cisco's QOS mechanism > allows easy classification on ports. Yes, most of the p2p apps are > port-agile -- but only if they are completely blocked. My experience is > that if you let the p2p stuff through, it'll stick to its default port and > you can police with impunity.
Our data shows that between 30% and 50% of p2p data flows on "non-standard" ports if you run an unblocked environment. Pete
