Bill,

What percentage of the Internet traffic is junk?

I think two things needs to be clarified: 1. What is "junk" (my $0.02: "junk" is what is as follows and associated by-product traffic of: - Viruses - Worms - Attacks of all kinds including DOS/dDOS - Spam - Crapware (which includes unwanted pop-up windows while surfing, challenging to measure) 2. Assuming that we a) have a clear definition of 1. and b) are able to netflow-measure it (both of which present challenges), how do you define "Internet traffic" and WHERE would you measure it (if it was technically possible to sniff/netflow everywhere). In other words, does "Internet traffic" include: - Peering traffic between tier-1s (at Equinix facilities, of course :-) - Transit traffic from/to tier-1s to smaller operators. - Peering between content providers and eyeballs. - Peering between eyeballs. - Peering between x and y (you should read Bill Norton's papers about peering, me thinks) - Internal traffic within eyeballs. - Non-data traffic (VOIP..)? - Etc? Michel.