Defining Qos Tail Drop Settings - Dell PowerConnect 6024 User Manual

Configuring DSCP Mapping Using the CLI Commands
Table 10-11. DSCP Mapping CLI Commands
CLI Command
qos map policed-
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.
Description
Modifies the policed DSCP map for remarking.
Configuring Quality of Service
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