SMC Networks 6128L2, Management Manual

Page: 519 / 606

P
RIORITY
C
OMMANDS
4-219
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 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. 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)
Table 4-60 Priority Commands
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 4-219
Priority (Layer 3 and 4) Maps IP DSCP tags to class of service values 4-226
Table 4-61 Priority Commands (Layer 2)
Command Function Mode Page
queue mode Sets the queue mode to strict priority or
Weighted Round-Robin (WRR) GC 4-220
switchport priority
default Sets a port priority for incoming untagged
frames IC 4-220
queue bandwidth Assigns round-robin weights to the
priority queues GC 4-222
queue cos map Assigns class-of-service values to the
priority queues IC 4-223
show queue mode Shows the current queue mode PE 4-224
show queue
bandwidth Shows round-robin weights assigned to
the priority queues PE 4-224