ZyXEL Communications 5 Series User Manual

Chapter 25 Bandwidth Management Screens

ZyWALL 5/35/70 Series User’s Guide

Figure 270   ADVANCED > BW MGMT > Class Setup > Add Sub-Class

The following table describes the labels in this screen.

Table 146   ADVANCED > BW MGMT > Class Setup > Add Sub-Class

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 

) 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

).

Filter Configuration