> > Have seen some anycast DNS implementations using more than one address, > > some times even on the same subnet, any considerations or reasons for > > doing that? > > We do that. > > We use two different, indepentent methods to route traffic to the IPs. > We feel this provides a greater degree of resilience.
More than one address also lets you do some load balancing or traffic steering, if that is desirable. (E.g.: Anycast group 1 announces prefix 1 with localpref 110, prefix 2 with localpref 120. Anycast group 2 announces prefix 1 with localpref 120, prefix 2 with localpref 110.) Steinar Haug, Nethelp consulting, sth...@nethelp.no _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
