Cisco 500 series Administration Manual page 419

Configuring Quality of Service
Configuring QoS - General
STEP 1
STEP 2
STEP 3
STEP 4
Cisco 500 Series Stackable Managed Switch Administration Guide
802.1p Queue
Values (4 queues 1-
(0-7, 7 being 4, 4 being the
the highest) highest
priority)
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.
The CoS/802. 1 p to Queue mapping is applicable only if one of the following exists:
• The switch is in QoS Basic mode and CoS/802. 1 p trusted mode
• The switch is in QoS Advanced mode and the packets belong to flows that
are CoS/802. 1 p trusted
Queue 1 has the lowest priority, queue 4 has the highest priority.
To map CoS values to egress queues:
Click Quality of Service > General > CoS/802.1p to Queue. The
Queue
page is displayed.
Enter the parameters.
• 802.1p—Displays the 802. 1 p priority tag values to be assigned to an egress
queue, where 0 is the lowest and 7 is the highest priority.
• Output Queue—Select the egress queue to which the 802. 1 p priority is
mapped. Four egress queues are supported, where Queue 4 is the highest
priority egress queue and Queue1 is the lowest priority.
For each 802. 1 p priority, select the Output Queue to which it is mapped.
Click Apply. 801. 1 p priority values to queues are mapped, and the Running
Configuration file is updated.
Queue Notes
(2 queues:
Normal and
High)
High
Cisco IP phone default
High
LVS phone RTP
High Network Control
25
Voice
Interwork Control
CoS/802. 1 p to
419