
Chapter 7: Quality of Service (QoS)
Configuring Policers (Rate Metering)
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Configuring Policers (Rate Metering)
This section includes:
•
Policer (Rate Metering) Overview
•
•
Assigning Policers to Interfaces
•
Configuring the Ingress and Egress Byte Compensation
Policer (Rate Metering) Overview
The PTP 850 switching fabric supports hierarchical policing on the logical interface level. You can define up to 250
rate meter (policer) profiles.
Note
Policing on the service point level, and the service point and CoS level, is planned for future release.
PTP 850's policer mechanism is based on a dual leaky bucket mechanism (TrTCM). The policers can change a
frame’s color and CoS settings based on CIR/EIR + CBS/EBS, which makes the policer mechanism a key tool for
implementing bandwidth profiles and enabling operators to meet strict SLA requirements.
The output of the policers is a suggested color for the inspected frame. Based on this color, the queue
management mechanism decides whether to drop the frame or to pass it to the queue.
Configuring Policer Profiles
This section includes:
•
•
•
Adding a Policer Profile
To add a policer profile:
1.
Select
Ethernet > QoS > Policer > Policer Profile
. The Policer Profile page opens.