6-3Routing Policy ConfigurationA routing policy is used to match given routing information or some attributes of routing information andchange the attributes of the routing information if the conditions are met. The above-mentioned filteringlists can serve as the match conditions:A routing policy can comprise multiple nodes and each node comprises:z if-match clause: Defines matching rules; that is, the filtering conditions that the routing informationshould satisfy for passing the current routing policy. The matching objects are some attributes ofthe routing information.z apply clause: Specifies actions, which are the configuration commands executed after a routesatisfies the filtering conditions specified by the if-match clause. Thereby, some attributes of theroute can be modified.Configuration PrerequisitesBefore configuring a routing policy, perform the following tasks:z Configuring a filtering list,z Configuring a routing protocolPrepare the following data before the configuration:z Routing policy name and node numberz Match conditionsz Route attributes to be changedDefining a Routing PolicyFollow these steps to define a routing policy:To do... Use the command... RemarksEnter system view system-view —Define a routing policy and enter therouting policy viewroute-policy route-policy-name { permit |deny } node node-numberRequiredNot defined by default
