24-Port Layer 3 Switch Management Guide

P RIORITY C OMMANDS
4-181
Priority 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 four priority queues for each
port. Data packets in a port’s high-priority queue will be transmitted before
those in the lower-priority queues. You can set the default priority for each
interface, the relative weight of each queue, and the mapping of frame
priority tags to the switch’s priority queues.
Priority Commands (Layer 2)
Command
Groups
Function Page
Priority
(Layer 2)
Configures default priority for untagged frames, sets
queue weights, and maps class of service tags to
hardware queues
4-181
Priority
(Layer 3 and 4)
Maps TCP ports, IP precedence tags, or IP DSCP
tags to class of service values
4-187
Command Function Mode Page
switchport priority
default
Sets a port priority for incoming untagged
frames
IC 4-182
queue bandwidth Assigns round-robin weights to the priority
queues
GC 4-183
queue cos map Assigns class-of-service values to the
priority queues
IC 4-184
show queue
bandwidth
Shows round-robin weights assigned to the
priority queues
PE 4-185
show queue
cos-map
Shows the class-of-service map PE 4-186
show interfaces
switchport
Displays the administrative and operational
status of an interface
PE 4-131