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37 CLASS OF SERVICE COMMANDS
The commands described in this section allow you to specify which data
packets have greater precedence when traffic is buffered in the switch due
to congestion. This switch supports CoS with eight priority queues for each
port. Data packets in a port’s high-priority queue will be transmitted before
those in the lower-priority queues. The default priority can be set for each
interface, also the queue service mode and the mapping of frame priority
tags to the switch's priority queues can be configured.
PRIORITY COMMANDS (LAYER 2)
This section describes commands used to configure Layer 2 traffic priority
on the switch.
Table 105: Priority Commands
Command Group Function
Priority Commands
(Layer 2)
Configures the queue mode, queue weights, and default priority
for untagged frames
Priority Commands
(Layer 3 and 4)
Maps TCP ports, IP precedence tags, or IP DSCP tags to class of
service values
Table 106: Priority Commands (Layer 2)
Command Function Mode
queue cos-map Assigns class-of-service values to the priority queues IC
queue mode Sets the queue mode to strict priority, Weighted
Round-Robin (WRR), or a combination of strict and
weighted queuing
IC
queue weight Assigns round-robin weights to the priority queues IC
switchport priority default Sets a port priority for incoming untagged frames IC
show interfaces
switchport
Displays the administrative and operational status of
an interface
PE
show queue cos-map Shows the class-of-service map PE
show queue mode Shows the current queue mode PE
show queue weight Shows weights assigned to the weighted queues PE
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