SMC Networks SMC6750L2 manual Priority Commands, 120

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.

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

3-120