Chapter 19 Bandwidth Management
ZyWALL 2 Plus User’s Guide
338
Figure 216 ADVANCED > BW MGMT > Class Setup > Add Sub-Class
The following table describes the labels in this screen.
Table 108 ADVANCED > BW MGMT > Class Setup > Add Sub-Class
LABEL DESCRIPTION
Class Configuration
Class Name Use the auto-generated name or enter a descriptive name of up to 20
alphanumeric characters, including spaces.
Bandwidth Budget
(kbps)
Specify the maximum bandwidth allowed for the class in kbps. The
recommendation is a setting between 20 kbps and 20000 kbps for an individual
class.
Priority Enter a number between 0 and 7 to set the priority of this class. The higher the
number, the higher the priority. The default setting is 3.
Borrow bandwidth
from parent class
Select this option to allow a sub-class to borrow bandwidth from its parent
class if the parent class is not using up its bandwidth budget.
Bandwidth borrowing is governed by the priority of the sub-classes. That is, a
sub-class with the highest priority (7) is the first to borrow bandwidth from its
parent class.
Do not select this for the classes directly below the root class if you want to
leave bandwidth available for other traffic types (see Section 19.7.4 on page
331) or you want to set the interface’s speed to match what the next device in
network can handle (see the Speed field description in Table 106 on page
335).
Filter Configuration
Enable Bandwidth
Filter
Select Enable Bandwidth Filter to have the ZyWALL use this bandwidth filter
when it performs bandwidth management.
You must enter a value in at least one of the following fields (other than the
Subnet Mask fields which are only available when you enter the destination or
source IP address).
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