3Com Switch 4200G Configuration Guide

234 CHAPTER 27: QOS CONFIGURATION
Configuration Example Set the IP precedence of the ICMP protocol packet to 3.
The configuration procedure is as follows:
<S4200G> system-view
[4200G] protocol-priority protocol-type icmp ip-precedence 3
[4200G] display protocol-priority
Displaying and
Maintaining QoS
After finishing the configurations mentioned above, you can execute the display
command in any view to check the running state of QoS after the configuration. You
can verify the effects of the configurations by checking the information on display.
Set the precedence of
the protocol packet
protocol-priority protocol-type
protocol-type { ip-precedence
ip-precedence | dscp dscp-value }
Required
You can modify the IP precedence
or DSCP precedence of the
protocol packet
Only the precedence of TELNET,
SNMP, and ICMP protocol packets
is supported currently
Display the
precedence of the
protocol packet
display protocol-priority Optional
You can execute the display
command in any view
Table 204 Setting the precedence of the protocol packet
Table 205 Displaying and maintaining QoS
Operation Command
Display the parameter
configurations of the mirroring
group
display mirroring-group { group-id | all | local |
remote-destination | remote-source }
Display the precedence of the
protocol packet
display protocol-priority
Display the
“COS-->Drop-precedence”
mapping relationship
display qos cos-drop-precedence-map
Display the “COS-->DSCP”
mapping relationship
display qos cos-dscp-map
Display the
“COS-->Local-precedence”
mapping relationship
display qos cos-local-precedence-map
Display the “DSCP-->802.1p
priority” mapping relationship
display qos dscp-cos-map
Display the
“DSCP-->Drop-precedence”
mapping relationship
display qos dscp-drop-precedence-map
Display the “DSCP-->DSCP”
mapping relationship
display qos dscp-dscp-map
Display the
“DSCP-->Local-precedence”
mapping relationship
display qos dscp-local-precedence-map
Display all the QoS settings of the
port
display qos-interface { interface-type interface-num |
unit-id } all
Display the parameter
configurations of traffic mirroring
display qos-interface { interface-type interface-num |
unit-id } mirrored-to
Display the priority mapping mode
of the switch
display qos-interface { interface-type interface-num |
unit-id } priority-trust