ZyXEL Communications Prestige 653HWI series, User Manual

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Prestige 653HWI Series User’s Guide
21-4 Bandwidth Management
Figure 21-3 Application and Subnet-based Bandwidth Management Example
21.5 Scheduler
The scheduler divides up an interface’s bandwidth among the bandwidth classes. The Prestige has two types
of scheduler: fairness-based and priority-based.
21.5.1 Priority-based Scheduler
With the priority-based scheduler, the Prestige forwards traffic from bandwidth classes according to the
priorities that you assign to the bandwidth classes. The larger a bandwidth class’s priority number is, the
higher the priority. Assign real-time applications (like those using audio or video) a higher priority number to
provide smoother operation.
21.5.2 Fairness-based Scheduler
The Prestige divides bandwidth equally among bandwidth classes when using the fairness-based scheduler;
thus preventing one bandwidth class from using all of the interface’s bandwidth.
21.6 Maximize Bandwidth Usage
The maximize bandwidth usage option (see Figure 21-7 ) allows the Prestige to divide up any available
bandwidth on the interface (including unallocated bandwidth and any allocated bandwidth that a class is not
using) among the bandwidth classes that require more bandwidth.