User Guide for FibeAir® IP-20 All-Outdoor Products, CeraOS 10.5
Page 330 of 825
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Assigning a WFQ Profile to an Interface
7.7.1
Scheduling Overview
Scheduling determines the priority among the queues. IP-20 provides a unique
hierarchical scheduling model that includes four priorities, with Weighted Fair
Queuing (WFQ) within each priority, and shaping per port and per queue.
The scheduler scans the queues and determines which queue is ready to transmit.
If more than one queue is ready to transmit, the scheduler determines which
queue transmits first based on:
•
Queue Priority
–
A queue with higher priority is served before lower-priority
queues.
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Weighted Fair Queuing (WFQ)
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If two or more queues have the same priority
and are ready to transmit, the scheduler transmits frames from the queues
based on a WFQ algorithm that determines the ratio of frames per queue
based on a predefined weight assigned to each queue.
7.7.2
Configuring Priority Profiles
Scheduling priority profiles determine the queue priority. Each profile contains
eight CoS-based priorities, corresponding to eight queues in an interface to which
the profile is assigned. You can configure up to eight priority profiles. A ninth
profile, Profile ID 9, is pre-configured. You can configure Green priorities from 4
(highest) to 1 (lowest). An additional four Yellow priority profiles are defined
automatically.
This section includes:
•
Adding a Scheduler Priority Profile
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Editing a Service Scheduler Priority Profile
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Deleting a Scheduler Priority Profile
7.7.2.1
Adding a Scheduler Priority Profile
To add a scheduler priority profile:
1 Select
Ethernet > QoS > Scheduler > Priority Profiles
. The Scheduler Priority
Profile page opens.