31 Policy-Based Routing
Configuration
Policy-based routing is a packet forwarding mechanism more flexible than the routing based
on the target network. If policy-based routing is used, the router will determine how to
process the packets to be routed according to the route map, which determines the next-hop
router of the packets.
To use the policy-based routing, you must specify the route map for it and create the route
map. A route map consists of multiple polices, each of which defines one or multiple
matching rules and corresponding operations. After policy-based routing is applied to an
interface, the packets received by the interface will be checked. The packets that do not
match any policy in the route map will be forwarded to the usual route. The packets that
match a policy in the route map will be processed according to the operation defined in the
policy. For the configuration of the route map, see the protocol-independent command
configuration guide.
To configure policy-based routing, perform the following steps:
1. Define the route map, which consists of many policy-based routes arranged in the order
of thei sequence numbers. When a policy is matched, the execution quits the route
map;
To define the redistribution route map, execute the following commands in the global
configuration mode:
2. Define the matching rule or condition for eacy policy of the route map;
To define the matching rules for the policies, execute the following commands in the
route map configuration mode:
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