Allied Telesis AT-FS970M Series - Manual (Page 1648)

Chapter 98: Quality of Service (QoS)
1648
Determining the
Egress Queues
There are eight egress queues allocated to each egress port. The egress
queue that a packet passes through is determined by whether or not the
QoS feature is enabled or disabled. When the QoS feature is enabled,
there are three commands that you can configure to determine which
egress queue classified traffic is transmitted on. See the three commands
listed in Table 215. When the QoS feature is disabled, all packets egress
on queue 2 by default.
For more information about these commands, see:
 “MLS QOS MAP COS-QUEUE” on page 1634
 “MLS QOS MAP DSCP-QUEUE” on page 1636
 “SET QUEUE” on page 1661
Note
You cannot set the SET QUEUE command and the SET COS
command as policy map actions for the same class map.
Table 215. Egress Queue Commands
To Do this Task Use this Command
Maps the CoS value to port egress queues.
(This method requires the TRUST COS
command.) mls qos map cos-queue cos_ priority
<0-7> to egress_queue <0-7>
Maps the DSCP value to port egress queues.
(This method requires the TRUST DSCP
command.) mls qos map dscp-queue dscp _ priority
to egress_queue
Determines which egress queue the classified
traffic is transmitted on. set queue <0-7>