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164 CHAPTER 7: QOS/ OPERATION
Configuring the Priority for Queue Scheduling
You can use the following command to configure which priority is used for queue
scheduling.
Perform the following configuration in system view.
By default, the switch chooses the local preference as the basic priority.
Entering QoS View
You should run most QoS configurations in QoS view.
Perform the following configuration in Ethernet interface view.
Different I/O modules may support different QoS functions and you can view the
QoS configuration items available for the current interface unit by keying in “?” in
QoS view.
Only the 20-Port 10/100/1000BASE-T and 20-Port 1000BASE-X-SFP I/O modules
support setting of line rate and packet redirection.
Configuring the Traffic Limit
Traffic limiting establishes actions to deal with the traffic flow that exceeds the
threshold. These actions can include discarding packets or lowering priority.
You must define the corresponding ACL before performing this configuration task.
Perform the following configuration in QoS view.
For details about the command, see the Switch 7750 Command Reference Guide.
Table 175 Configuring the Priority for Queue Scheduling
Operation Command
Configure the priority for queue scheduling priority-trust { dscp | ip-precedence | cos |
local-precedence }
Table 176 Entering QoS View
Operation Command
Enter QoS view qos
Table 177 Configuring the Traffic Limit
Operation Command
Configure the flow-based rate limit traffic-limit { inbound | outbound } {
ip-group { acl-number | acl-name } [ rule rule
] | link-group { acl-number | acl-name } [ rule
rule ] } target-rate [ exceed action ]
Cancel the configuration of the flow-based
rate limit
undo traffic-limit { inbound | outbound } {
ip-group { acl-number | acl-name } [ rule rule
] | link-group { acl-number | acl-name } [ rule
rule ] }