Dell PowerConnect 6024 User's Guide (.htm) - Page 441
Configuring DSCP Mapping Using the CLI Commands, Defining QoS Tail Drop Settings, QoS Tail Drop
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Configuring DSCP Mapping Using the CLI Commands Table 10-11. DSCP Mapping CLI Commands CLI Command Description qos map policed- Modifies the policed DSCP map for remarking. dscp dscp-list to dscp-mark-down The following is an example of the CLI commands to map DSCP values 12 and 18 to value 56, when out of profile: console(config)# qos map policed-dscp 12 18 to 56 Defining QoS Tail Drop Settings Tail drop occurs when a packet burst saturates a buffer. The last few packets in the burst are dropped, due to lack of space in the buffer. Use the QoS Tail Drop page to define tail drop settings for each queue. To open the QoS Tail Drop page, click Quality of Service→Advanced QoS Mode→ QoS Tail Drop in the tree view. Figure 10-13. QoS Tail Drop Page Queue No.-Specifies the queue for which the tail drop settings apply. Threshold (1-100) - The tail drop threshold percentage for the queue. The packet refers to this threshold, and if it is exceeded, packets are dropped until the threshold is no longer exceeded. Configuring Quality of Service 451
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