Global and Local Parameters Overview

Policy definitions are templates that the policy engine uses to construct policies that the SAE installs on the router or provisions on the CMTS device. When you configure the policy template, you can assign parameter values. Before it creates a policy for installation on the router, the policy engine substitutes parameter values with specific values. The policy engine uses the parameter value acquisition process to obtain the specific values.

Policies can use global or local parameters:

The SRC software provides many predefined built-in parameters and runtime parameters. Runtime parameters are built-in parameters that are filled in with an actual value from the running system when the policy is installed on the router. For example, the interface_speed parameter is filled in with the actual speed of the router interface. You cannot change the values of built-in or runtime parameters.

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