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IPv6 traffic numbers [was: Re: OT - Vint Cerf joins Google]
[CC'ing Stanislav Shalunov, who does the Internet2 weekly reports.] Marshall Eubanks writes, in response to Jordi's "8% IPv6" anecdote: > These estimates seem way high and need support. Here is a counter-example. While I'm also skeptical about the representativeness of Jordi's estimates, this is a bad counterexample (see below about why): > Netflow on Internet 2 for last week > http://netflow.internet2.edu/weekly/20050829/ > has 6.299 Gigabytes being sent by IPv6, out of a total 383.2 > Terabytes, or 0.0016% This is backbone traffic, and would not catch > intra-Campus traffic, nor would it catch tunnel or VPN traffic, ^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^ Wrong. What you see here is ONLY tunnel traffic, because the number is for IPv6-in-IPv4 (IP protocol 41) traffic. Netflow for IPv6 isn't widely used yet. Our own equipment doesn't support it, and I don't think the Junipers used in Abilene do, either (someone please correct me if I'm wrong). > but it is suggestive. Yes, but it's also irrelevant, because Abilene has native IPv6, so there is little incentive for sending IPv6 tunneled in IPv4. > According to the graph > http://netflow.internet2.edu/weekly/longit/perc-protocols41-octets.png > the most I2 IPv6 traffic was in 2002, when it was almost 0.6% of the total. I would assume that that was before IPv6 went native on Abilene. > It is hard for me to imagine that the situation for commerical US > traffic is much different. I'm sure there's less > There may be similar statistics for Geant - I would be interested to > see them. I'll look up the GEANT numbers in a minute, stay tuned. -- Simon.