# Viewing policy class support

Use this procedure to open the Policy Class Support tab.

## Procedure steps

1. From the navigation tree, double-click QoS.

2. From the QoS tree, double-click QoS Agent.

3. Select the Policy Class Support tab.

## Variable definitions

The following table outlines the parameters of the Policy Class Support tab.

Table 1. QoS Agent Policy Class Support tab parameters
Variable | Value
--- | ---
PolicyClassName | Identifies the Policy Rule Classes (PRCs) the device supports. A PRC is synonymous to a MIB table; therefore, the supported PRCs indicate which MIB tables are supported for QoS processing purposes.
CurrentInstances | Specifies the current number of Policy Rules Instances (PRIs) that are installed for a specific PRC (equates to the current number of entries in a given MIB table).
MaximumInstalledInstances | Specifies the maximum number of PRIs that a user can install and/or modify for a specific PRC (equates to the number of MIB table entries that a user can create or modify).