Operation Manual – Routing ProtocolH3C S7500 Series Ethernet Switches Chapter 2 Static Route Configuration2-1Chapter 2 Static Route ConfigurationWhen configuring static routes, go to these sections for information you are interestedin:z Introduction to Static Routez Static Route Configurationz Displaying the Routing Tablez Static Route Configuration Examplez Troubleshooting a Static Route2.1 Introduction to Static Route2.1.1 Static RouteStatic routes are special routes. They are manually configured by the administrator.By configuring static routes, you can build an interconnecting network. The problemfor such configuration is that a static route cannot change automatically to steer awayfrom the fault point without the help of the administrator when a fault occurs on thenetwork.In a relatively simple network, you only need to configure static routes to make routerswork normally. Proper configuration and usage of static routes can improve networkperformance and ensure sufficient bandwidth for important applications.Static routes are divided into three types:z Destination reachable route: normal route. If a static route to a destinationbelongs to this type, the IP packets sent to this destination will be forwarded tothe next hop. It is the most common type of static routes.z Destination unreachable route: If a static route to a destination has the "reject"attribute, all the IP packets sent to this destination will be discarded, and thesource hosts will be informed of the unreachability of the destination.z Blackhole route: If a static route to a destination has the “blackhole” attribute,the outgoing interface of this route is the Null 0 interface regardless of the nexthop address, and all the IP packets sent to this destination will be droppedwithout notifying the source hosts.The attributes "reject" and "blackhole" are usually used to limit the range of thedestinations that this router can reach, and help troubleshoot the network.
