3Com 10014298 manual Defining Apply Clauses for a Route Policy

102CHAPTER 5: IP ROUTING PROTOCOL OPERATION

The if-match clauses for a node in the route policy require that the route satisfy all the clauses to match the node before the actions specified by the apply clauses can be executed.

If no if-match clauses are specified, all the routes pass the filtering on the node.

Defining Apply Clauses for a Route Policy

The apply clauses specify actions, which are the configuration commands executed after a route satisfies the filtering conditions that are specified in the if-match clauses. In this way, some attributes of the route can be modified.

Perform the following configurations in Route policy view.

Table 102 Defining Apply Clauses

Operation	Command
Set the next-hop address of the routing	apply ip next-hop { ip-address [
information	ip-address ] acl acl-number }
Cancel the next-hop address of the routing	undo apply ip next-hop
information
Set the tag domain of the routing information	apply tag value
Cancel the tag domain of the routing	undo apply tag
information

By default, no apply clauses are defined.

If the routing information meets the match conditions specified in the route policy, then this value is regarded as the MED value of the IGP route.

Importing Routing Information Discovered by Other Routing Protocols

A routing protocol can import the routes that are discovered by other routing protocols to enrich its route information. The route policy can filter route information to implement the redistribution. If the destination routing protocol that imports the routes cannot directly reference the route costs of the source routing protocol, you should satisfy the requirement of the destination protocol by specifying a route cost for the imported route.

Perform the following configuration in routing protocol view.

Table 103 Configuring Importing Routes of Other Protocols

Operation	Command
Import routes of other protocols	import-route protocol [ med med
	cost cost ] [ tag value ] [ type
	1 2 ] [ route-policy
	route-policy-name ]
Do not import routes of other protocols	undo import-route protocol

By default, the routes discovered by other protocols are not imported.

In different routing protocol views, the parameter options are different. For details, refer to the description of the import-routecommand for each protocol .