Alcatel-Lucent 1643 AMS Applications And Planning Manual page 109

Product description
A Flow Profile can be labelled and pre-provisioned. It can be assigned to multiple
flows and contains the following parameters:
• Traffic conditioning parameters such as TransLAN®ingress rate control parameters
including dropping precedence marking.
Frames below CIR are classified as "green" (low dropping precedence). Frames
between CIR and PIR are classified as "yellow" (high dropping precedence).
Frames above PIR are classified as "red" and are dropped. The high or low
dropping precedence is encoded in the LSB of the user_priority field of the S-TAG.
• Traffic class flow assignment including traffic class marking indicating a certain
service level.
Users can assign a traffic class for each flow which determines the value of the 2
MSB user_priority bits in the S-TAG of the frames that are classified to the flow.
The relation between the assigned traffic class and the 2 MSB user_priority bits is
fixed. Based on the traffic class, the frame will be assigned to a certain queue by a
fixed traffic class to queue mapping function that is present in each switch.
• Limits: maximum 250 profiles per system including traffic class and rate control
parameters.
Q-tagging mode
The X5IP option card supports Flow Classification in the IEEE 802.1Q tagging mode.
Users can assign a similar flow profile as described above for the IEEE 802.1ad
tagging mode. Note that the QoS classification operations will only modify the
end-user priority (UP) bits.
CQS - Provider Bridge Mode (PBM) and Q-tagging mode
The X5IP option card supports classification, queuing, and scheduling functions for
four traffic classes, associated with three queues in the Provider Bridge Mode and
Q-tagging mode.
Note: In the Q-tagging mode, this function is a non-standard conformance operation
mode in which the customer's user priority (UP) bits will be modified.
Ingress rate control in Provider Bridge Mode (PBM) and Q-tagging mode
The X5IP option card supports ingress rate control values through rate policing per
flow at customer role ports in provider bridge mode and Q-tagging mode. This
function is based on 'Strict policing' values where (PIR=CIR) and 'Oversubscription'
values where (PIR>CIR).
Note: In the Q-tagging mode, this function is a non-standard conformance operation
mode in which the third user priority (UP) bit of the customer tag will be modified.
LAN port provisioning
The following sections describe LAN port provisioning capabilities that are supported
by the X5IP option card.
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365-312-801R7.2
Issue 3, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
X5IP option card
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