Cisco 500 Series Administration Manual page 607

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605
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 is the default CoS/802.1p priority assigned to the
ingress ports.
The following table describes the default mapping when there are 4 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
The following table describes the default mapping when there are 8 queues:
802.1p Queue
Values (8 queues 1-
(0-7, 7 being 8, 8 is the
the highest) highest
priority)
Standalone
0 1
Notes
Background
Best Effort
Excellent Effort
Critical Application - LVS
phone SIP
Video
Voice - Cisco IP phone
default
Interwork Control - LVS
phone RTP
Network Control
7 Queues
(8 is the highest
priority used for
stack control
traffic) Stack
1
Cisco 500 Series Stackable Managed Switch Administration Guide
Quality of Service
Configuring QoS - General
Notes
Background