Brocade Multi-Service IronWare QoS and Traffic Management Configuration Guide (Supporting R05.6.00) - Manual (Page 187)

Multi-Service IronWare QoS and Traffic Management Configuration Guide 173
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Hierarchical QoS (HQoS) for 8x10G modules
5
FIGURE 8 HQoS model
HQoS Components
The following HQoS components are supported in this release.
Supported levels of scheduling
At every scheduling/shaping level, the sum of the shaping rates going into a scheduler element
does not need to add up to less than the shaping rate out of that scheduler element. The scheduler
scheme used, Strict Priority (SP), Round Robin (RR), Weighted Round Robin (WRR), or mixed
scheduling schemes, will determined how much traffic is scheduled for transmission from each
scheduler flow. The rate shaper of a scheduler flow will limit the amount of traffic that can be
scheduled from that scheduler flow. Therefore, the combination of scheduler flow rate shapers and
scheduler element allows for the sharing of bandwidth among the respective scheduler flows in an
ordered and pre-determined fashion.
Customer 4
Customer 3
Customer 2
Logical
Port 2
Customer 1
Logical
Port 1
Service 1
Service 2
Service 3
Service 4
Physical
Port