Configuring Quality of Service 347
CoS to Queue Mapping Table Page
The CoS to Queue Mapping Table page contains the following fields: 
• Class of Service—Specifies the CoS priority tag values, where zero is the lowest and 
seven is the highest.
• Queue—Indicates the traffic forwarding queue to which the CoS priority is mapped. 
Four traffic priority queues are supported.
 NOTE: In a stacking configuration, Queue 4 is used for forwarding stacking traffic. Therefore, 
assigning additional traffic to Queue 4 may interfere with stack control.
• Use Defaults—Uses the device defaults for mapping CoS values to a forwarding 
queue.
Mapping a CoS value to a Queue: 
1 Open the CoS to Queue page.
2 Select a CoS entry. 
3 Define the queue number in the Queue field.
4 Click Apply Changes. The CoS value is mapped to a queue, and the device is 
updated.