On Mar 26, 2010, at 9:24 AM, Jeroen Massar wrote: > InterNetX - Lutz Muehlig wrote: >> Hello, >> >> has someone experience in anycast ipv4 networks (to support DNS)? > > "Never been done" "Dangerous" "TCP does not work" etc etc etc.
Can't really tell if you're being serious here due to caffeine underrun. http://www.nanog.org/meetings/nanog37/presentations/matt.levine.pdf Slide 23 seems quite appropriate. http://www.ripe.net/ripe/meetings/ripe-50/presentations/ripe50-plenary-tue-anycast.pdf has links to other work on this. It certainly seems to work "well enough". > > I assume quite a number of people know how to do it, especially as > several root DNS servers abuse it. > > Simple recipe: > - Box with: > - Your favourite OS > - Quagga or OpenBGPd > - Your favourite DNS server > - Announce the IP of the anycast node in BGP > - Monitor the DNS server, when it does not work kill your local BGPd > and notify the admins that it broke > > That is it. Probably with the above couple of things, google a bit and > find the rest. > > Greets, > Jeroen >
