Cisco 500 Series Administration Manual page 608

Quality of Service
Configuring QoS - General
STEP 1
STEP 2
Cisco 500 Series Stackable Managed Switch Administration Guide
802.1p Queue
Values (8 queues 1-
(0-7, 7 being 8, 8 is the
the highest) highest
priority)
Standalone
1 2
2 3
3 6
4 5
5 8
6 8
7 7
By changing the CoS/802.1p to Queue mapping (CoS/802.1p to Queue) and the
Queue schedule method and bandwidth allocation (Queue page), it is possible to
achieve the desired quality of service in a network.
The CoS/802.1p to Queue mapping is applicable only if one of the following exists:
• The device is in QoS Basic mode and CoS/802.1p trusted mode
• The device is in QoS Advanced mode and the packets belong to flows that
are CoS/802.1p trusted
Queue 1 has the lowest priority, queue 4 or 8 has the highest priority.
To map CoS values to egress queues:
Click Quality of Service > General > CoS/802.1p to Queue.
Enter the parameters.
• 802.1p—Displays the 802.1p priority tag values to be assigned to an egress
queue, where 0 is the lowest and 7 is the highest priority.
7 Queues Notes
(8 is the highest
priority used for
stack control
traffic) Stack
1 Best Effort
2 Excellent Effort
5 Critical Application - LVS
phone SIP
4 Video
7 Voice - Cisco IP phone
default
7 Interwork Control
LVS phone RTP
6 Network Control
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