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Currently policy-based routing is process-switched within the software, which means that on most platforms the switching rate was approximately 1000 to 10,000 packets per second. Such rates are not fast enough for many applications. The Fast-Switched Policy Routing feature allows customers to direct certain traffic profiles to take specified paths through the network, enabling source-based routing and leveraging security.
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.
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Policy routing must be configured before you configure fast-switched policy routing.
IP policy routing can be fast-switched. Prior to fast-switched policy routing, policy routing could only be process -switched, which meant that on most platforms, the switching rate was approximately 1000 to 10,000 packets per second. Such rates were not fast enough for many applications. With fast-switched policy routing, users who need policy routing to occur at faster speeds can implement policy routing without slowing down the device.
Fast-switched policy routing supports all match commands and most set commands, except for the following:
The set interface command is supported only over point-to-point links, unless there is a route cache entry that uses the same interface that is specified in the command in the route map.
To configure fast-switched policy routing, use the ip route-cache policy interface configuration command.
Related Topic |
Document Title |
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Cisco IOS commands |
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IP routing protocol-independent commands |
Cisco IOS IP Routing: Protocol-Independent Command Reference |
Description |
Link |
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The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Feature Name |
Releases |
Feature Information |
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Fast-Switched Policy Routing |
11.3 Cisco IOS XE Release 3.2SE Cisco IOS XE Release 3.3SE |
Currently policy-based routing is process-switched within the software, which means that on most platforms the switching rate was approximately 1000 to 10,000 packets per second. Such rates are not fast enough for many applications. The Fast-Switched Policy Routing feature allows customers to direct certain traffic profiles to take specified paths through the network, enabling source-based routing and leveraging security. In Cisco IOS XE Release 3.2SE, support was added for the Cisco Catalyst 3850 Series Switches. In Cisco IOS XE Release 3.3SE, support was added for the Cisco Catalyst 3650 Series Switches and Cisco Catalyst 3850 Series Switches. |