Cisco 500 series Administration Manual page 418

Configuring Quality of Service
Configuring QoS - General
STEP 3
Cisco 500 Series Stackable Managed Switch Administration Guide
Strict Priority
-
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
-
queue.
% of WRR Bandwidth
-
the queue. These values represent the percent of the WRR weight.
Click Apply. The queues are configured, and the Running Configuration file is
updated.
Mapping CoS/802.1p to a Queue
CoS/802. 1 p to Queue
The
CoS/802. 1 p to Queue Table determines the egress queues of the incoming
packets based on the 802. 1 p priority in their VLAN Tags. For incoming untagged
packets, the 802. 1 p priority is the default CoS/802. 1 p priority assigned to the
ingress ports.
Default Mapping Queues
802.1p Queue
Values (4 queues 1-
(0-7, 7 being 4, 4 being the
the highest) highest
priority)
0 1
1 1
2 2
3 3
4 3
—Traffic scheduling for the selected queue and all higher
—If WRR is selected, enter the WRR weight assigned to the
—Displays the amount of bandwidth assigned to
page maps 802. 1 p priorities to egress queues. The
Queue
(2 queues:
Normal and
High)
Normal
Normal
Normal
Normal
Normal
25
Notes
Background
Best Effort
Excellent Effort
Critical Application
LVS phone SIP
Video
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