On Sun, 3 Nov 2002, Brad Knowles wrote: > Under no circumstances whatsoever should Joe Random ISP be > running anycast root.
Well, if they do it to their own network, thats their problem. If they advertise reachability to it without prior approval, thats everyone's problem. > Anycast requires that the data fit into a single UDP packet, > which cannot be more than 512 bytes long. TCP does not anycast. *sigh*. 'Anycast' just means that a given route is advertised by multiple points (could be the same entity, could be different entities). Your normal BGP path-selection algorithms choose the 'nearest' server based on the shortest path that your router sees. Some pretty graphs showing that anycast works can be found linked from http://www.as112.net/ , and in particular TCP queries received by the RIPE NCC's AS112 nameserver can be found at http://www.ripe.net/as112/xstats_RTCP.html Regards, -- Bruce Campbell RIPE Systems/Network Engineer NCC www.ripe.net - PGP562C8B1B Operations/Security #---------------------------------------------------------------------- # To unsubscribe, send a message to <[EMAIL PROTECTED]>.
