3Com Switch 4500 26-Port Configuration Manual page 126

124 C 6: IP R
HAPTER OUTING
P O
ROTOCOL PERATION
Table 123 Defining if-match Conditions
Operation
Cancel the matched next-hop of
the routing information set by the
address prefix list
Match the routing cost of the
routing information
Cancel the matched routing cost of
the routing information
By default, no matching is performed.
The clauses for a node in the route policy require that the route satisfy
if-match
all the clauses to match the node before the actions specified by the
can be executed.
If no clauses are specified, all the routes will pass the filtering on the
if-match
node.
Defining Apply Clauses for a Route Policy
The clauses specify actions, which are the configuration commands
apply
executed after a route satisfies the filtering conditions that are specified in the
clauses. In this way, some attributes of the route can be modified.
if-match
Perform the following configurations in Route Policy View.
Table 124 Defining Apply Clauses
Operation
Set the routing cost of the routing information
Cancel the routing cost of the routing information
By default, no apply clauses are defined.
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.
In different routing protocol views, the parameter options are different. For
details, refer to the description of the
Defining IP Prefix
A prefix list is identified by the IP Prefix name. Each IP Prefix can include multiple
items, and each item can specify the matching range of the network prefix forms.
The
index_number
Command
undo if-match ip next-hop ip-prefix
if-match cost cost
undo if-match cost
import-route
specifies the matching sequence in the prefix list.
apply
Command
apply cost value
undo apply cost
command for each protocol.
clauses