(1. Static route: the path from the source to the target must be clearly indicated in the static route. 2. Default route: the default route is a special static route, which specifies the next hop address for those packets that do not find an explicit matching route information in the route table. When configuring the default gateway on a WindowsServer2003 computer, a default route is specified for that computer. 3. Dynamic routing: when the network scale is large and the network structure often changes, it is necessary to use dynamic routing. By configuring the routing protocol on the router, you can automatically collect network information, reflect the changes of the network structure, and dynamically maintain the contents of the routing table.)