Bandwidth Management Priority; Maximize Bandwidth Usage; Bandwidth Management Behavior; Figure 297 Lan To Wan, Outbound 200 Kbps, Inbound 500 Kbps - ZyXEL Communications Unified Security Gateway ZyWALL 1000 User Manual

Chapter 27 Application Patrol

Figure 297 LAN to WAN, Outbound 200 kbps, Inbound 500 kbps

Inbound: 500 kbps

27.4.3 Bandwidth Management Priority

The ZyWALL gives bandwidth to higher-priority traffic first, until it reaches its configured
bandwidth rate.
Then lower-priority traffic gets bandwidth.
The ZyWALL uses a fairness-based (round-robin) scheduler to divide bandwidth among
traffic flows with the same priority.
The ZyWALL automatically treats traffic with bandwidth management disabled as priority 7
(the lowest priority).

27.4.4 Maximize Bandwidth Usage

Maximize bandwidth usage allows applications with maximize bandwidth usage enabled to
"borrow" any unused bandwidth on the out-going interface.
After each application gets its configured bandwidth rate, the ZyWALL uses the fairness-
based scheduler to divide any unused bandwidth on the out-going interface amongst
applications that need more bandwidth and have maximize bandwidth usage enabled.
Unused bandwidth is divided equally. Higher priority traffic does not get a larger portion of
the unused bandwidth.

27.4.5 Bandwidth Management Behavior

This section shows how bandwidth management behaves with various settings. For example,
you configure DMZ to WAN policies for FTP servers A and B. Each server tries to send 1000
kbps, but the WAN is set to a maximum outgoing speed of 1000 kbps. You configure policy A
for server A's traffic and policy B for server B's traffic.
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WAN
LAN
GE1 GE2
Outbound: 200 kbps
GE3
GE4
Outbound: 200 kbps
ZyWALL USG 1000 User's Guide
DMZ
GE5