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ZyWALL 5/35/70 Series User’s Guide
Chapter 25 Bandwidth Management 404
25.6 Application and Subnet-based Bandwidth Management
You could also create bandwidth classes based on a combination of a subnet and an
application. The following example table shows bandwidth allocations for application specific
traffic from separate LAN subnets.
25.7 Scheduler
The scheduler divides up an interface’s bandwidth among the bandwidth classes. The
ZyWALL has two types of scheduler: fairness-based and priority-based.
25.7.1 Priority-based Scheduler
With the priority-based scheduler, the ZyWALL 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.
25.7.2 Fairness-based Scheduler
The ZyWALL 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.
25.7.3 Maximize Bandwidth Usage
The maximize bandwidth usage option (see Figure 194 on page 409) allows the ZyWALL 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.
Table 136 Application and Subnet-based Bandwidth Management Example
TRAFFIC TYPE FROM SUBNET A FROM SUBNET B
VoIP 64 Kbps 64 Kbps
Web 64 Kbps 64 Kbps
FTP 64 Kbps 64 Kbps
E-mail 64 Kbps 64 Kbps
Video 64 Kbps 64 Kbps