How To Configure Dns Inbound Load Balancing - ZyXEL Communications ZyWALL USG100-Plus User Manual

Chapter 5 Managing Traffic
5.3.2 Configure the Policy Route
Now you need to configure a policy route that has the ZyWALL use the range of public IP addresses
as the source address for WAN to LAN traffic.
Click Configuration > Network > Routing > Policy Route > Add (in IPv4 Configuration).
It is recommended to add a description. This example uses LAN-to-WAN-Range.
Specifying a Source Address is also recommended. This example uses LAN1_SUBNET.
Set the Source Network Address Translation to Public-IPs and click OK.

5.4 How to Configure DNS Inbound Load Balancing

This example shows you how to configure the ZyWALL to respond to DNS query messages with the
least loaded interface's IP address. The DNS query senders will then transmit packets to that
interface instead of an interface that has a heavy load.
This example assumes that your company's domain name is www.example.com. You want your
ZyWALL's WAN1 (202.1.2.3) and WAN2 (202.5.6.7) to use DNS inbound load balancing to balance
traffic loading coming from the Internet.
In the CONFIGURATION > Network > Inbound LB screen, select Enable DNS Load
1
Balancing. Click Apply.
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ZyWALL USG100-PLUS User's Guide