Peak Burst Size (PBS)
For any QoS Profile, except the default profiles, the system allows you to assign a
Peak Burst Size (PBS) (CIR) (unit: kbit/s).
PBS mode
Determines whether the PBS value is derived from the attribute value ethernet QoS
Profile Flow PIR or directly provisioned.
The following values are supported:
• Specified value: Peak Burst Size (PBS) is directly set as provisioned by the
manager.
• Small bucket size:
The value for the Peak Burst Size (PBS) is calculated in the following way:
– PBS = 0.010 * (ethernetQoSProfileFlowPIR / 8)
– if PBS == 0 then burstSizeValue = 0 (not consistent with rule CBS/PBS >=
2kB. MR planned)
– If 0 < PBS <= maxPBS then burstSizeValue will be set to the next greater or
equal value from the allowed value range
– If PBS > maxPBS then burstSizeValue = maxPBS 3.
• Large bucket size:
The value for the Peak Burst Size (PBS) is calculated in the following way:
– PBS = 0.110 * (ethernetQoSProfileFlowPIR / 8)
– the burstSizeValue will be determined based on calculated PBS value.
Traffic provisioning
Parameters for provisioning a QoS profile
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365-312-807R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
8-133
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