Reference Guide

1214 | Quality of Service (QoS)
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To return to the default setting, enter no service-class dynamic dot1p.
Defaults
All dot1p traffic is mapped to Queue 0 unless service-class dynamic dot1p is enabled. Then
the default mapping is as follows:
Command Modes
INTERFACE
CONFIGURATION (C-Series and S-Series only)
Command
History
Usage
Information
Enter this command to honor all incoming 802.1p markings, on incoming switched traffic, on
the interface. By default, this facility is not enabled (that is, the 802.1p markings on incoming
traffic are not honored).
This command can be applied on both physical interfaces and port channels. When you set
the service-class dynamic for a port channel, the physical interfaces assigned to the port
channel are automatically configured; you cannot assign the service-class dynamic command
to individual interfaces in a port channel.
On the C-Series and S-Series all traffic is by default mapped to the same queue, Queue 0. If
you honor dot1p on ingress, then you can create service classes based the queueing strategy
using the command
service-class dynamic dot1p from INTERFACE mode. You may apply this
queuing strategy to all interfaces by entering this command from CONFIGURATION mode.
Table 42-1. Default dot1p to Queue Mapping
dot1p
E-Series
Queue ID
C-Series
Queue ID
S-Series
Queue ID
0210
1000
2100
3311
4422
5523
6633
7733
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810
Version 8.2.1.0 Available globally on the C-Series and S-Series so that the configuration
applies to all ports.
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
Version 6.5.1.0 Expanded command to permit configuration on port channels
pre-Version 6.1.1.1 Introduced on E-Series