# Configuring egress mapping using EDM

Use this procedure to configure DSCP-to-802.1p priority and drop precedence associations that are used for assigning these values at packet egress, based on the DSCP in the received packet.

## Prerequisites

- Open one of the supported browsers.

- Enter the IP address of the switch to open an EDM session.

## Procedure steps

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

2. In the QoS tree, double-click QoS Devices.

3. In the work area, click the DSCP Mapping tab.

4. To select a DSCP map to edit, click a Dscp row.

5. In the Dscp row, double-click the cell in the 802.1pPriority column.

6. From the list, select a value.

7. In the Dscp row, double-click the cell in the DropPrecedence column.

8. From the list, select a value.

9. In the Dscp row, double-click the cell in the NewDscp column.

10. In the cell, type a value.

11. In the Dscp row, double-click the cell in the ServiceClass column.

12. In the cell, type a character string.

13. On the toolbar, click Apply.

## Variable definitions

Use the data in the following table to help you configure egress mapping.

Table 1. DSCP Mapping tab parameters
Variable | Value
--- | ---
Dscp | Indicates the DSCP value. This is a read-only cell.
802.1pPriority | Specifies the user priority value associated with the DSCP. The values range from 0–7.
DropPrecedence | Specifies the relative drop precedence value for mapping the DSCP value to a drop precedence. The values include: lowDropPrec highDropPrec When network congestion occurs, the system drops packets with a high drop precedence before those with a low drop precedence.
NewDscp | Specifies a new DSCP value to use when DSCP mutation is required. The values range from 0–63.
ServiceClass | Specifies the type of service. The value is a character string with a maximum of 16 characters.