SMC Networks SMC6752AL2 manual Priority Commands Layer, 222

COMMAND LINE INTERFACE

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.

Table 4-57 Priority Commands

Command Groups	Function	Page
Priority (Layer 2)	Configures default priority for untagged frames,	4-222
	sets queue weights, and maps class of service tags
	to hardware queues
Priority (Layer 3 and 4)	Maps TCP ports, IP precedence tags, or IP DSCP	4-229
	tags to class of service values

Priority Commands (Layer 2)

Table 4-58 Priority Commands (Layer 2)

Command	Function	Mode	Page
queue mode	Sets the queue mode to strict priority or	GC	4-223
	Weighted Round-Robin (WRR)
switchport priority	Sets a port priority for incoming untagged	IC	4-224
default	frames
queue bandwidth	Assigns round-robin weights to the priority	GC	4-225
	queues
queue cos map	Assigns class-of-service values to the	IC	4-226
	priority queues
show queue mode	Shows the current queue mode	PE	4-227
show queue	Shows round-robin weights assigned to the	PE	4-227
bandwidth	priority queues

4-222