SMC Networks SMC7724M/VSW manual Priority Commands, 124

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	IC	3-125
default	untagged frames
queue bandwidth	Assigns round-robin weights to the	GC	3-126
	priority queues
queue cos map	Assigns class of service values to the	IC	3-127
	priority queues
show queue	Shows round-robin weights assigned to	PE	3-129
bandwidth	the priority queues
show queue	Shows the class of service map	PE	3-129
cos-map
show interfaces	Displays the administrative and	PE	3-78
switchport	operational status of an interface
Layer 3 and 4 Priority Commands
map ip port	Enables TCP/UDP class of service	GC	3-130
	mapping
map ip port	Maps TCP/UDP socket to a class of	IC	3-131
	service
map ip precedence	Enables IP precedence class of service	GC	3-131
	mapping
map ip precedence	Maps IP precedence value to a class of	IC	3-132
	service
map ip dscp	Enables IP DSCP class of service	GC	3-133
	mapping
map ip dscp	Maps IP DSCP value to a class of service	IC	3-134

3-124