Anycast use the same address pool with unicast, but its routing table is difficult to converge for anycast servers’
dispersive location, and this leads to low efficiency of packet forwarding. This paper proposes an algorithm which can
decrease the anycast routing table entries count by converge them based on interfaces. Analyses and experiment shows
this algorithm performance is improved in packet forwarding. And this algorithm is routing loop-free as discussed in this
paper. But it has limitation in network topology that must be applied in point-to-point network but not point-to-multipoint.