Hey, Brad - the latest I know of are ours, but I'm possibly out of date: http://www.cs.cmu.edu/~dga/papers/aip-sigcomm2008-abstract.html Look in section 4.1. The #s were from routeviews, June 30, 2008. The gist: June 2008: 247K entries Growth rate: 17% per year So - June 2009: 288k There's an embarrassing typo in the formula in the paper - it says "2.07 * 10^4" as the base, when it's obvious that it means 2.47 * 10^5. Sigh. I'll get that corrected. :) Also note that our #s differ a bit from, say, CIDR report since we used routeviews as our baseline. If you use the june 6, 2008 CIDR report as your starting point, which starts at 267k, the 17% exponential growth would predict that the October 31, 2008 CIDR report would report 284k prefixes; in reality, it reported 286. So, reasonably close. But you want to start with the # of prefixes that YOU observe, since that's going to be a little different depending on your vantage point. Plug in: STARTING_NUM_PREFIXES * e^(NUM_DAYS_ELAPSED * 0.0004253) e.g., 267000 * e^(147 * 0.0004253) and you'll have a pretty decent prediction unless things change course. :) On Nov 3, 2008, at 6:38 PM, Brad Freeman wrote:
Hi,
I am looking for some recent estimates of future IPv4 & IPv6 routing table growth, the most recent reliable estimate I can find was done by Vince Fuller in his presentation in March 2007, is there any newer or alternative figures out?
Thanks
Bradley