Hub/Switch Reference Guide

103
Nortel WLAN—Security Switch 2300 Series Command Line Reference
Quality of Service Commands
Use Quality of Service (QoS) commands to configure packet prioritization in WSS Software. Packet prioritization
ensures that WSSs and APs give preferential treatment to high-priority traffic such as voice and video.
(To override the prioritization for specific traffic, use access controls lists [ACLs] to set the Class of Service [CoS] for
the packets. See Chapter , “Security ACL Commands,” on page 449.)
This chapter presents QoS commands alphabetically. Use the following table to locate commands in this chapter based
on their use.
clear qos
Resets the switch’s mapping of Differentiated Services Code Point (DSCP) values to internal QoS values.
The switch’s internal QoS map ensures that prioritized traffic remains prioritized while transiting through the WSS. A
WSS uses the QoS map to do the following:
• Classify inbound packets by mapping their DSCP values to one of eight internal QoS values
• Classify outbound packets by marking their DSCP values based on the switch’s internal QoS values
Syntax clear qos
[cos-to-dscp-map [from-qos] | dscp-to-cos-map [from-dscp]]
Defaults None.
Access Enabled.
History Introduced in WSS Software Version 4.1.
Usage To reset all mappings to their default values, use the clear qos command without the optional
parameters.
QoS Settings show qos on page 95
show qos dscp-table on page 96
set qos cos-to-dscp-map on page 94
set qos dscp-to-cos-map on page 95
clear qos on page 93
cos-to-dscp-map [from-qos] Resets the mapping between the specified internal QoS value and
the DSCP values with which WSS Software marks outbound
packets.
QoS values are from 0 to 7.
dscp-to-cos-map [from-
dscp]
Resets the mapping between the specified range of DSCP values and
internal QoS value with which WSS Software classifies inbound
packets.