SMC Networks SMC8150L2 Priority Commands Layer, Priority Commands Command Groups Function

4 Command Line Interface

Command Mode

Privileged Exec

Example

This shows that traffic entering Port 1 that matches the specifications for protocol group 1 will be mapped to VLAN 2:

Console#show interfaces protocol-vlan protocol-group

Port ProtocolGroup ID Vlan ID

---------- ------------------		-----------
Eth 1/1	1	vlan2
Console#

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 4-61 Priority Commands

Command Groups	Function	Page
Priority (Layer 2)	Configures default priority for untagged frames, sets queue weights,	4-184
	and maps class of service tags to hardware queues
Priority (Layer 3 and 4)	Maps IP DSCP tags to class of service values	4-189

Priority Commands (Layer 2)

Table 4-62 Priority Commands (Layer 2)

Command	Function	Mode	Page
queue mode	Sets the queue mode to strict priority or Weighted	GC	4-185
	Round-Robin (WRR)
switchport priority default	Sets a port priority for incoming untagged frames	IC	4-185
queue bandwidth	Assigns round-robin weights to the priority queues	GC	4-186
queue cos map	Assigns class-of-service values to the priority queues	IC	4-187
show queue mode	Shows the current queue mode	PE	4-188
show queue bandwidth	Shows round-robin weights assigned to the priority queues	PE	4-188
show queue cos-map	Shows the class-of-service map	PE	4-189
show interfaces switchport	Displays the administrative and operational status of an	PE	4-125
	interface

4-184