Quality of Service (QoS): Managing Bandwidth More Effectively
Using QoS Classifiers to Configure Quality of Service for Outbound Traffic
If you then decided to remove port A1 from QoS prioritization:
In this instance,
Assigning a DSCP Policy Based on the
This option assigns a previously configured DSCP policy (codepoint and 802.1p priority) to outbound IP packets (received from the specified source- ports). That is, the switch:
| 1. | Selects an incoming IP packet on the basis of its | |
| 2. | Overwrites the packet’s DSCP with the DSCP configured in the switch for | |
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| such packets. | |
| 3. | Assigns the 802.1p priority configured in the switch for the new DSCP. | |
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| (Refer to “Differentiated Services Codepoint (DSCP) Mapping” on page | |
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| 4. | Forwards the packet through the appropriate outbound port queue. | |
| For more on DSCP, refer to “Terminology” on page | ||
| Steps for Creating a Policy Based on | ||
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N o t e | You can select one DSCP per | ||
| a | ||
| 802.1p priority configuration for that port.) | ||
| 1. | Identify the | |
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| policy. | |
| 2. | Determine the DSCP policy for packets having the selected | |
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| a. | Determine the DSCP you want to assign to the selected packets. (This |
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| codepoint will be used to overwrite the DSCP carried in packets |
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| received through the |
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| b. | Determine the 802.1p priority you want to assign to the DSCP. |