SMC Networks 8708L2, Management Manual

Page: 545 / 606

P
RIORITY
C
OMMANDS
4-255
• This switch provides eight priority queues for each port. It is
configured to use Weighted Round Robin, which can be viewed with
the
show queue bandwidth command. Inbound frames that do not
have VLAN tags are tagged with the input port’s default ingress user
priority, and then placed in the appropriate priority queue at the output
port. The default priority for all ingress ports is zero. Therefore, any
inbound frames that do not have priority tags will be placed in queue 0
of the output port. (Note that if the output port is an untagged member
of the associated VLAN, these frames are stripped of all VLAN tags
prior to transmission.)
Example
The following example shows how to set a default priority on port 3 to 5:
queue bandwidth
This command assigns weighted round-robin (WRR) weights to the eight
class of service (CoS) priority queues. Use the
no form to restore the
default weights.
Syntax
queue bandwidth weight1...weight8
no queue bandwidth
weight1...weight8 - The ratio of weights for queues 0 - 7 determines
the weights used by the WRR scheduler. (Range: 1 - 15)
Default Setting
Weights 1, 2, 4, 6, 8, 10, 12, 14 are assigned to queues 0 - 7 respectively.
Command Mode
Interface Configuration (Ethernet Ports 1-8, Port Channel)
Command Usage
WRR controls bandwidth sharing at the egress port by defining
scheduling weights.
Console(config)#interface ethernet 1/3
Console(config-if)#switchport priority default 5