Priority Commands; Priority Commands (Layer 2); Queue Mode; Table 4-66 Priority Commands - Digisol DG-FS4526 Management Manual

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 Groups
Priority (Layer 2)
Priority (Layer 3 and 4)

Priority Commands (Layer 2)

Command

queue mode

switchport priority default
queue bandwidth
queue cos map
show queue mode
show queue bandwidth
show queue cos-map
show interfaces switchport Displays the administrative and operational status of an
queue mode
This command sets the queue mode to strict priority, Weighted Round-Robin
(WRR), or hybrid for the class of service (CoS) priority queues. Use the no form to
restore the default value.
Syntax
queue mode {strict | wrr | hybrid}
no queue mode
• strict - Services the egress queues in sequential order, transmitting all
traffic in the higher priority queues before servicing lower priority queues.
• wrr - Weighted Round-Robin shares bandwidth at the egress ports by using
scheduling weights for queues 0 - 3 respectively.
Table 4-66 Priority Commands
Function
Configures default priority for untagged frames, sets queue weights,
and maps class of service tags to hardware queues
Maps IP port and IP DSCP, Precedence, and TOS values to class of
service queues
Table 4-67 Priority Commands (Layer 2)
Function
Sets the queue mode to strict priority, Weighted Round-Robin
(WRR), or hybrid
Sets a port priority for incoming untagged frames
Assigns round-robin weights to the priority queues
Assigns class-of-service values to the priority queues
Shows the current queue mode
Shows round-robin weights assigned to the priority queues
Shows the class-of-service map
interface
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