Use the following 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.
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Step | Action |
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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 aDscp 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 dialog box, type a value. |
11 |
In the Dscp row, double-click the cell in the ServiceClass column. |
12 |
In the dialog box, type a character string. |
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Use the data in the following table to configure egress mapping.
Variable | Value |
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Dscp | Indicates the DSCP value. This is a read-only cell. |
802.1pPriority | Specifies the user priority value associated with the DSCP. Values range from 0–7. |
DropPrecedence |
Specifies the relative drop precedence value for mapping the DSCP value to a drop precedence. Values include:
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. Values range from 0–63. |
ServiceClass | Specifies the type of service. Value is a character string with a maximum of 20 characters. |