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Quality of Service
General
STEP 1
STEP 2
STEP 3
Cisco Sx350, SG350X, SG350XG, Sx550X & SG550XG Series Managed Switches, Firmware Release 2.2.5.x
To select the priority method and enter WRR data.
Click Quality of Service > General > Queue.
Enter the parameters.
•
Queue—Displays the queue number.
•
Scheduling Method: Select one of the following options:
-
Strict Priority—Traffic scheduling for the selected queue and all higher queues is
based strictly on the queue priority.
-
WRR—Traffic scheduling for the selected queue is based on WRR. The period time
is divided between the WRR queues that are not empty, meaning they have
descriptors to egress. This division happens only if the strict priority queues are
empty.
-
WRR Weight—If WRR is selected, enter the WRR weight assigned to the queue.
-
% of WRR Bandwidth—Displays the amount of bandwidth assigned to the queue.
These values represent the percent of the WRR weight.
Click Apply. The queues are configured, and the Running Configuration file is updated.
CoS/802.1p to a Queue
The CoS/802.1p to Queue page maps 802.1p priorities to egress queues. The CoS/802.1p to
Queue Table determines the egress queues of the incoming packets based on the 802.1p
priority in their VLAN Tags. For incoming untagged packets, the 802.1p priority is the default
CoS/802.1p priority assigned to the ingress ports.
The following table describes the default mapping when there are 8 queues (for the 550
family):
802.1p Values
Queue
(0-7, 7 being the
(8 queues 1-8, 8
highest)
is the highest
priority)
0
1
1
2
7 Queues
Notes
(8 is the highest
priority used for
stack control traffic)
Stack
1
Background
1
Best Effort
20
352
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