Chapter 19 Bandwidth Management
ZyWALL 2 Plus User’s Guide
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19.7 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.
19.7.1 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.
19.7.2 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.
19.7.3 Maximize Bandwidth Usage
The maximize bandwidth usage option 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.
When you enable maximize bandwidth usage, the ZyWALL first makes sure that each
bandwidth class gets up to its bandwidth allotment. Next, the ZyWALL divides up an
interface’s available bandwidth (bandwidth that is unbudgeted or unused by the classes)
depending on how many bandwidth classes require more bandwidth and on their priority
levels. When only one class requires more bandwidth, the ZyWALL gives extra bandwidth to
that class.
When multiple classes require more bandwidth, the ZyWALL gives the highest priority
classes the available bandwidth first (as much as they require, if there is enough available
bandwidth), and then to lower priority classes if there is still bandwidth available. The
ZyWALL distributes the available bandwidth equally among classes with the same priority
level.
19.7.4 Reserving Bandwidth for Non-Bandwidth Class Traffic
Do the following three steps to configure the ZyWALL to allow bandwidth for traffic that is
not defined in a bandwidth filter.
1
Leave some of the interface’s bandwidth unbudgeted.
64 Kbps
64 Kbps
Video
64 Kbps
64 Kbps
Table 102
Application and Subnet-based Bandwidth Management Example
TRAFFIC TYPE
FROM SUBNET A
FROM SUBNET B
Содержание ADSL 2+ Security Gateway
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Страница 265: ...Chapter 14 IPSec VPN ZyWALL 2 Plus User s Guide 265 Figure 178 SECURITY VPN VPN Rules IKE Edit Gateway Policy ...
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Страница 306: ...Chapter 15 Certificates ZyWALL 2 Plus User s Guide 306 Figure 203 SECURITY CERTIFICATES My Certificates Create Basic ...
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Страница 417: ...417 PART V Logs and Maintenance Logs Screens 419 Maintenance 447 ...
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Страница 508: ...Chapter 33 Wireless Setup ZyWALL 2 Plus User s Guide 508 ...
Страница 556: ...Chapter 38 Filter Configuration ZyWALL 2 Plus User s Guide 556 ...
Страница 570: ...Chapter 40 System Information Diagnosis ZyWALL 2 Plus User s Guide 570 ...
Страница 586: ...Chapter 41 Firmware and Configuration File Maintenance ZyWALL 2 Plus User s Guide 586 ...
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Страница 603: ...603 PART VII Troubleshooting and Specifications Troubleshooting 605 Product Specifications 613 ...
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Страница 644: ...Appendix B Pop up Windows JavaScripts and Java Permissions ZyWALL 2 Plus User s Guide 644 ...
Страница 668: ...Appendix E Importing Certificates ZyWALL 2 Plus User s Guide 668 ...
Страница 672: ...Appendix F Legal Information ZyWALL 2 Plus User s Guide 672 ...
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