ZyXEL Communications PMG5317-T20A - Add;Edit a Qos Policer

Chapter 10 Quality of Service (QoS)
PMG5317-T20A User’s Guide
145
10.7.1 Add/Edit a QoS Policer
Click Add New Policer in the Policer Setup screen or the Edit icon next to a policer to show the
following screen.
Figure 66 Policer Setup: Add/Edit
The following table describes the labels in this screen.
Table 43 Policer Setup: Add/Edit
LABEL DESCRIPTION
Active Select to enable or disable this policer.
Name Enter the descriptive name of this policer.
Meter Type This shows the traffic metering algorithm used in this policer.
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.
The Single Rate Three Color (srTCM) is based on the token bucket filter and identifies
packets by comparing them to the Committed Information Rate (CIR), the Committed Burst
Size (CBS) and the Excess Burst Size (EBS).
The Two Rate Three Color (trTCM) is based on the token bucket filter and identifies
packets by comparing them to the Committed Information Rate (CIR) and the Peak
Information Rate (PIR).
Committed
Rate
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.
Committed
Burst Size
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.