Qos In Frf.12 End-To-End Fragmentation - Alcatel-Lucent 7450 Quality Of Service Manual

QoS in FRF.12 End-to-End Fragmentation

When end-to-end fragmentation is enabled on an FR SAP, the queuing and scheduling on the
XMA or MDA is reusing the existing FR SAP high and low priority queues are show in
Figure
Channel SAP Queue Prioritization on MDA
Strict
Priority
WRR
Some minor modifications are introduced to accommodate end-to-end FRF.12 fragments.
The user configured FR scheduling class for this SAP will dictate which of the FR SAP XMA
or MDA queues should be used to queue the fragments. Classes 0 and 1 map all fragments of
the FR SAP to the Hi-Priority SAP queue. Classes 2 and 3 map all fragments of the FR SAP
to the Low-Priority SAP queue.
The scheduling parameters of these queues have to be modified from existing ones as follows:
Quality of Service Guide
• Changes of parameters in the currently assigned ingress and egress QoS profiles.
55.
Figure 55: DLC Egress Channel Queue Scheduling
RR
Shaper
Shaper
• Hi priority (HP) SAP queue: SAP_HP_Q_PIR= Sum{all SAP_FC_Q_PIR}
• Low priority (LP) SAP queue: SAP_LP_Q_WRR_Weight = Sum{all
SAP_FC_Q_CIR}
ctl
Terminating, SAP-Egress Policy #1
hp
Expedited
Non-expedited
hp
lp
lp
QoS in MC-MLPPP
Raw Control Traffic
ef
AF1
AF2
BE
Another SAP
Fabric
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