They are characterized by the global maintenance, precise routing, shortestpathrouting.
它们的特点是全局维护，精确路由指向，最短路径路由。
2
Working with a small test network, we wanted to demonstrate various load-balancing scenarios with Routing Information Protocol (RIP) and Open ShortestPath First (OSPF).
In this paper, all the relay routers are taken as a virtual node by assigning them an anycast address which is accessed along the shortestpath by anycast routing.