Mapping Cos/802.1P To A Queue - Cisco SF200-24 Administration Manual
Small business 200 series smart switch
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Configuring Quality of Service
Configuring QoS - General
STEP 3
Cisco Small Business 200 1. 1 Series Smart Switch Administration Guide
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 will be 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
5
4
6
4
7
4
By changing the CoS/802. 1 p to Queue mapping and the Queue schedule method
and bandwidth allocation, it is possible to achieve the desired quality of services
in a network.
CoS/802. 1 p to Queue mapping is applicable only if CoS/802. 1 p is the trusted
mode and the packets belong to flows that are CoS trusted.
page maps 802. 1 p priorities to egress queues. The
Queue
(2 queues:
Normal and
High)
Normal
Normal
Normal
Normal
Normal
High
High
High
18
Notes
Background
Best Effort
Excellent Effort
Critical Application
LVS phone SIP
Video
Voice
Cisco IP phone default
Interwork Control
LVS phone RTP
Network Control
260
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