Configuring Quality of Service
Configuring QoS - General
Cisco Small Business 200 1.1 Series Smart Switch Administration Guide
260
18
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 will be the default CoS/802.1p priority assigned to the
ingress ports.
Default Mapping Queues
By changing the CoS/802.1p 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/802.1p to Queue mapping is applicable only if CoS/802.1p is the trusted
mode and the packets belong to flows that are CoS trusted.
802.1p
Values
(0-7, 7 being
the highest)
Queue
(4 queues 1-
4, 4 being the
highest
priority)
Queue
(2 queues:
Normal and
High)
Notes
0
1 Normal
Background
1
1
Normal
Best Effort
2
2
Normal
Excellent Effort
3
3
Normal
Critical Application
LVS phone SIP
4
3
Normal
Video
5
4
High
Voice
Cisco IP phone default
6
4
High
Interwork Control
LVS phone RTP
7
4
High
Network Control