ZyXEL Communications ZyXEL ZyWALL 2WG - Manual (Page 141)

Chapter 8 WAN Screens
ZyWALL 2WG User’s Guide
141
Configure the Route Priority metrics in the WAN General screen to determine the primary
and secondary WANs. By default, WAN 1 is the primary WAN and WAN 2 is the secondary
WAN.
Figure 66 Load Balancing: Spillover
The following table describes the related fields in this screen.
8.8 WAN IP Address Assignment
Every computer on the Internet must have a unique IP address. If your networks are isolated
from the Internet, for instance, only between your two branch offices, you can assign any IP
addresses to the hosts without problems. However, the Internet Assigned Numbers Authority
(IANA) has reserved the following three blocks of IP addresses specifically for private
networks.
Table 36 Load Balancing: Spillover
LABEL DESCRIPTION
Active/Active
Mode
Select Active/Active Mode and set the related fields to enable load balancing on
the ZyWALL.
Load Balancing
Algorithm
Set the load balancing method to Spillover.
Time Frame You can set the ZyWALL to get the measured bandwidth using the average
bandwidth in the specified time interval.
Enter the time interval between 10 and 600 seconds.
Send traffic to
secondary WAN
when primary
WAN bandwidth
exceeds
Specify the maximum allowable bandwidth on the primary WAN. Once this
maximum bandwidth is reached, the ZyWALL sends the new session traffic that
exceeds this limit to the secondary WAN. The ZyWALL continues to send traffic of
existing sessions to the primary WAN.
Table 37 Private IP Address Ranges
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255