Casio ISA550WBUN3K9 manual Configuring Policy-Based Routing

Networking	4
Configuring Routing

Configuring Policy-Based Routing

Use the Networking > Routing > Policy Based Routing page to configure Policy-Based Routing (PBR). PBR specifies the internal IP and/or service going through a WAN port to provide more flexible and granular traffic handling capabilities. Up to 100 Policy-Based Routing rules can be configured on the security appliance.

This feature can be used to segregate traffic between links that are not of the same speed. High volume traffic can be routed through the port connected to a high speed link and low volume traffic can be routed through the port connected to the slow link. For example, although HTTP traffic is typically routed through WAN1, by using PBR you can bind the HTTP protocol to WAN1 and bind the FTP protocol to WAN2. In this case, the security appliance automatically channels FTP data through WAN2.

If multiple routing features operate simultaneously, the security appliance first matches the Policy-Based Routing rules, and then matches the Static Routing and default routing rules. For example, if the WAN redundancy is set as the Weighted Dual WAN Settings and the Policy-Based Routing and Static Routing rules are configured, the routing priority works as follows:

1.If traffic cannot match the Policy-Based Routing or Static Routing rules, traffic follows the Weighted Dual WAN Settings.

2.If traffic A matches the Policy-Based Routing or Static Routing rules, it will first be handled by the Policy-Based Routing or Static Routing rules, while other traffic follows the Weighted Dual WAN Settings.

NOTE Make sure that you configure a secondary WAN connection and that the WAN redundancy is set to Dual WAN Settings or Routing Table mode before you configure the Policy-Based Routing settings.

Cisco ISA500 Series Integrated Security Appliances Administration Guide 153