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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 95: Priority Commands
Command Group
Function
Configures the queue mode, queue weights, and default priority for
untagged frames
Sets the default priority processing method (CoS or DSCP), maps
priority tags for internal processing, maps values from internal
priority table to CoS values used in tagged egress packets for Layer
2 interfaces, maps internal per hop behavior to hardware queues
Table 96: Priority Commands (Layer 2)
Command
Function
Mode
Sets the queue mode to Weighted Round-Robin
(WRR), strict priority, or a combination of strict and
weighted queuing
IC
Assigns round-robin weights to the priority queues
IC
Sets a port priority for incoming untagged frames
IC
Displays the administrative and operational status of an
interface
PE
Shows the current queue mode
PE
Shows weights assigned to the weighted queues
PE