Traffic Class
For any QoS Profile, except the default profiles, the system allows you to assign a
Traffic Class (TC).
Values: 0, 1, 2, 3, 0-, 1-, 2-, 3- , T
The system allows to assign Traffic Class T only to NR ports (with QoS mode =
Default Profile), never to CR ports.
In case of Provider Bridge Mode (IEEE 802.1ad) the TC=’1’ is reserved for future use.
Please do not use it in any QoS Profile.
Committed Burst Size (CBS)
For any QoS Profile, except the default profiles, the system allows you to assign a
Committed Burst Size (CIR) (unit: kbit/s).
The following value range is supported for the attribute committed Burst Size (CBS):
•
0: only allowed if ethernetQoSProfileFlowCIR equals 0.
• 12 Kbyte, 13 Kbyte .. 100 Kbyte (i.e. in step of 1 Kbyte)
• 100 Kbyte, 110 Kbyte, .. 1000 Kbyte (i.e. in step of 10 Kbyte)
• 1000 Kbyte, 1100 Kbyte, .. 1300 Kbyte (i.e. in step of 100 Kbyte)
• 1400 Kbyte (this value is the maximal value for CBS called maxCBS)
Important! The following constraint must be met: PBS CBS
CBS mode
Determines whether the CBS value is derived from the attribute value ethernet QoS
Profile Flow CIR or directly provisioned by the manager.
The following values are supported:
• Specified value: Committed Burst Size (CBS) is directly set as provisioned by the
manager.
• Small bucket size:
The value for the Committed Burst Size (CBS) is calculated in the following way:
– CBS = 0.010 * (ethernetQoSProfileFlowCIR / 8)
– if CBS == 0 then burstSizeValue = 0
– If 0 < CBS <= maxCBS then burstSizeValue will be set to the next greater or
equal value from the allowed value range
– If CBS > maxCBS then burstSizeValue = maxCBS
• Large bucket size:
The value for the Committed Burst Size (CBS) is calculated in the following way:
– CBS = 0.110 * (ethernetQoSProfileFlowPIR / 8)
– the burstSizeValue will be determined based on calculated CBS value.
Traffic provisioning
Parameters for provisioning a QoS profile
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Alcatel-Lucent - Proprietary
See notice on first page
365-312-807R7.2
Issue 4, May 2007
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