ZyXEL Communications 5 Series User Manual

Chapter 25 Bandwidth Management Screens

ZyWALL 5/35/70 Series User’s Guide

Here is an example of bandwidth management with classes configured for bandwidth 
borrowing. The classes are set up based on departments and individuals within certain 
departments.

Refer to the product specifications chapter to see how many class levels you can configure on 
your ZyWALL. 

• The Bill class can borrow unused bandwidth from the Sales USA class because the Bill 

class has bandwidth borrowing enabled.

• The Bill class can also borrow unused bandwidth from the Sales class because the Sales 

USA class also has bandwidth borrowing enabled.

• The Bill class cannot borrow unused bandwidth from the Root class because the Sales 

class has bandwidth borrowing disabled.

• The Amy class cannot borrow unused bandwidth from the Sales USA class because the 

Amy class has bandwidth borrowing disabled.

Source Address Type

Do you want your rule to apply to packets coming from a particular (single) IP, 
a range of IP addresses (for example 192.168.1.10 to 192.169.1.50) or a 
subnet? Select Single Address, Range Address or Subnet Address.

Source IP Address

Enter the single IP address or the starting IP address in a range here. 

Source End Address 
/ Subnet Mask

If you are configuring a range of IP addresses, enter the ending IP address 
here. If you are configuring a subnet of addresses, enter the subnet mask here. 
Refer to 

 for more information on IP subnetting.

Source Port 

Enter the starting and ending destination port numbers. Enter the same port 
number in both fields to specify a single port number. See 

 for a table of services and port numbers.

Protocol ID 

Enter the protocol ID (service type) number, for example: 1 for ICMP, 6 for TCP 
or 17 for UDP. 

Apply

Click Apply to save your changes back to the ZyWALL.

Cancel

Click Cancel to exit this screen without saving.

Table 146   ADVANCED > BW MGMT > Class Setup > Add Sub-Class (continued)

Table 147   Bandwidth Borrowing Example

Root Class: 

Administration: Borrowing 
Enabled

Sales: Borrowing Disabled

Sales USA: Borrowing 
Enabled

Bill: Borrowing Enabled

Amy: Borrowing Disabled

Sales Asia: Borrowing 
Disabled

Tina: Borrowing Enabled

Fred: Borrowing Disabled

Marketing: Borrowing 
Enabled

Research: Borrowing 
Enabled

Software: Borrowing 
Enabled

Hardware: Borrowing 
Enabled