Mapping Cos/802.1P To A Queue - Cisco SF200-24 Administration Manual

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
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