ZyXEL Communications P870HNU-51B User Manual page 203

Table 66 QoS Policer Setup: Add
LABEL
Meter Type
Committed
Rate
Committed
Burst Size
Conforming
Action
Non-
Conforming
Action
Regulated Classes
Member Setting
Available Class
Selected Class
Back
Apply
Cancel
P-870HNU-51b User's Guide
DESCRIPTION
Select how the policer shapes the traffic of the member QoS classes.
The Simple Token Bucket algorithm uses tokens in a bucket to control when
traffic can be transmitted. Each token represents one byte. The algorithm allows
bursts of up to b bytes which is also the bucket size.
Specify the committed rate. When the incoming traffic rate of the member QoS
classes is less than the committed rate, the device applies the conforming action
to the traffic.
Specify the committed burst size for packet bursts. This must be equal to or less
than the peak burst size (two rate three color) or excess burst size (single rate
three color) if it is also configured.
This is the maximum size of the (first) token bucket in a traffic metering
algorithm.
Specify what the Device does for packets within the committed rate and burst
size (green-marked packets).
• Pass: Send the packets without modification.
• DSCP Mark: Change the DSCP mark value of the packets. Enter the DSCP
mark value to use.
Specify what the Device does for packets that exceed the excess burst size or
peak rate and burst size (red-marked packets).
• Drop: Discard the packets.
• DSCP Mark: Change the DSCP mark value of the packets. Enter the DSCP
mark value to use. The packets may be dropped if there is congestion on the
network.
Select a QoS classifier to apply this QoS policer to traffic that matches the QoS
classifier.
Highlight a QoS classifier in the Available Class box and use the Add >>
button to move it to the Selected Class box.
To remove a QoS classifier from the Selected Class box, select it and use the
Remove button.
Click Back to return to the previous screen without saving.
Click Apply to save your changes back to the Device.
Click Cancel to begin configuring this screen afresh.
Chapter 15 Quality of Service (QoS)
203