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NTERFACE
3-120
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.
Command Function Mode Page
Layer 2 Priority Commands
switchport priority
default
Sets a port priority for incoming untagged
frames
IC 3-121
queue bandwidth Assigns round-robin weights to the priority
queues
GC 3-122
queue cos map Assigns class of service values to the
priority queues
IC 3-123
show queue
bandwidth
Shows round-robin weights assigned to the
priority queues
PE 3-125
show queue cos-map Shows the class of service map PE 3-125
show interfaces
switchport
Displays the administrative and
operational status of an interface
PE 3-77
Layer 3 and 4 Priority Commands
map ip port Enables TCP/UDP class of service
mapping
GC 3-126
map ip port Maps TCP/UDP socket to a class of
service
IC 3-127
map ip precedence Enables IP precedence class of service
mapping
GC 3-128
map ip precedence Maps IP precedence value to a class of
service
IC 3-128
map ip dscp Enables IP DSCP class of service mapping GC 3-130
map ip dscp Maps IP DSCP value to a class of service IC 3-130
show map ip port Shows the IP port map PE 3-132