4.1 Description

Policy-based routing forwards packets over Layer 3 to user-defined destination devices, instead of following routing information registered in a routing protocol or by configuration commands.

The following figure shows a policy-based routing configuration example.

Figure 4-1: Example of policy-based routing configuration

Switch A forwards all packets received from the Internet to the firewall and antivirus security devices. Switch B forwards all packets received from the internal network to filtering and antivirus devices. Different security checks can be used for sent and received packets. This configuration can also be applied to load distribution and authentication.

Thus, policy-based routing can forward packets according to user-defined routes irrespective of routing information.

<Structure of this section>

• 4.1.1 Control Policy-Based Routing

• 4.1.2 Policy-based routing group

• 4.1.3 Packets subject to policy-based routing

• 4.1.4 Address type that can be set for the next hop

• 4.1.5 Policy-based routing tracking

• 4.1.6 Tracking track

• 4.1.7 Notes on Policy-Based Routing