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The switch uses policies to support per-flow QoS when it is in QoS advanced mode. An aggregate policer applies Quality of Service (QoS) to multiple class maps. It supports class maps from different policies and applies QoS to each of its flows in aggregation, hence the name Aggregate Policer. This article explains how to set up an aggregate policer on a ESW2-550X Switches.
Note: QoS must be in advanced mode. For more information refer to the article entitled Quality of Service (QoS) Properties on ESW2-550X Switches.
Step 1. Log in to the web configuration utility, and choose Quality of Service > QoS Advanced Mode > Aggregate Policer. The Aggregate Policer page opens.
Step 2. Click Add to add a policy. The Add Aggregate Policer page opens.
Step 3. From the Aggregate Policer Name drop-down list, choose an Aggregate Policer.
Step 4. In the Ingress Committed Information Rate (CIR) field, enter the CIR value. CIR specifies the amount of bandwidth on a frame relay service.
Step 5. In the Ingress Committed Burst Size (CBS) field, enter the maximum burst size even if it goes beyond the CIR in bytes. Committed burst size is the amount of data that a network accepts in a given committed rate measurement interval (Tc). Tc is defined as ratio of CBS to CIR.
Step 6. Click the appropriate radio button in the Exceed Action field to define what action has to be taken when the packets exceed the CIR limit. The possible values are as follows:
• Forward — Forwards the packets which exceed the CIR limit.
• Drop — Drops the packets which exceed the CIR limit.
• Out of Profile DSCP — This replaces the old Differentiated Services Code Point (DSCP) values with the new DSCP values based on the Out of Profile DSCP Mapping table for the packets which exceed the CIR limit.
Note: For more information on the Out of Profile DSCP Mapping table, refer to the article entitled Configuration of Out of Profile DSCP Mapping on ESW2-550X Switches.
Step 7. Click Apply to save the changes.
Step 8. (Optional) To edit the aggregate policer, check the particular aggregate policer, click Edit and follow Steps 3-7.
Step 9. (Optional) To delete the aggregate policer, check the check box for the particular aggregate policer and click Delete.