Cisco Small Business 200 Series

Quality of Service
Configuring QoS - General
Cisco Small Business 200 Series Smart Switch Administration Guide 311
23
• 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
happens only if 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.
STEP 3 Click Apply. The queues are configured, and the Running Configuration file is
updated.
Mapping 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 4 queues:
802.1p
Values
(0-7, 7 being
the highest)
Queue
(4 queues 1-
4, 4 being the
highest
priority)
Notes
0 1 Background
11 Best Effort
2 2 Excellent Effort
3 3 Critical Application - LVS
phone SIP
43 Video