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Chapter 20 Bandwidth Management
ZyWALL 2WG User’s Guide
418
Figure 258 ADVANCED > BW MGMT > Summary
The following table describes the labels in this screen.
Table 131 ADVANCED > BW MGMT > Summary
LABEL DESCRIPTION
Class These read-only labels represent the physical interfaces. Select an interface’s check
box to enable bandwidth management on that interface. Bandwidth management
applies to all traffic flowing out of the router through the interface, regardless of the
traffic’s source.
Traffic redirect or IP alias may cause LAN-to-LAN or DMZ-to-DMZ traffic to pass
through the ZyWALL and be managed by bandwidth management.
Active Select an interface’s check box to enable bandwidth management on that interface.
Speed (kbps) Enter the amount of bandwidth for this interface that you want to allocate using
bandwidth management. This appears as the bandwidth budget of the interface’s
root class (see Section 20.12 on page 419). The recommendation is to set this
speed to match what the device connected to the port can handle. For example, set
the WAN interface speed to 1000 kbps if the broadband device connected to the
WAN port has an upstream speed of 1000 kbps.
The recommendation is to set this speed to match the interface’s actual
transmission speed. For example, set the WAN interface speed to 1000 kbps if your
Internet connection has an upstream transmission speed of 1 Mbps.
You can set this number higher than the interface’s actual transmission speed. This
will stop lower priority traffic from being sent if higher priority traffic uses all of the
actual bandwidth.
You can also set this number lower than the interface’s actual transmission speed. If
you do not enable Maximize Bandwidth Usage, this will cause the ZyWALL to not
use some of the interface’s available bandwidth.
Scheduler Select either Priority-Based or Fairness-Based from the drop-down menu to
control the traffic flow.
Select Priority-Based to give preference to bandwidth classes with higher priorities.
Select Fairness-Based to treat all bandwidth classes equally. See Section 20.7 on
page 413.
Maximize
Bandwidth
Usage
Select this check box to have the ZyWALL divide up all of the interface’s unallocated
and/or unused bandwidth among the bandwidth classes that require bandwidth. Do
not select this if you want to reserve bandwidth for traffic that does not match a
bandwidth class (see Section 20.7.4 on page 413) or you want to limit the speed of
this interface (see the Speed field description).
Apply Click Apply to save your changes back to the ZyWALL.
Reset Click Reset to begin configuring this screen afresh.