User guide

Sample Implementation on Two Gateways
Chapter 8: Configuring High Availability 291
Gateway A will reduce its priority by 30, if its secondary Internet connection goes
down.
l. Click Apply.
A success message appears.
6. Do the following on Gateway B:
a. Set the gateway's internal IP addresses and network range to the values
specified in the table above.
See Changing IP Addresses on page 198.
b. Click Setup in the main menu, and click the High Availability tab.
The High Availability page appears.
c. Select the Gateway High Availability check box.
The Gateway High Availability area is enabled. The LAN and DMZ networks are
listed.
d. Next to LAN, select the HA check box.
e. In the LAN network's Virtual IP field, type the default gateway IP address
192.168.100.3.
f. Next to DMZ, select the HA check box.
g. In the DMZ network's Virtual IP field, type the default gateway IP address
192.168.101.3.
h. Click the Synchronization radio button next to DMZ.
i. In the My Priority field, type "60".
The low priority means that Gateway B will be the Passive Gateway.
j. In the Internet - Primary field, type "20".
Gateway B will reduce its priority by 20, if its Internet connection goes down.
k. Click Apply.
A success message appears.
Gateway A's priority is 100, and Gateway B's priority is 60. So long as one of Gateway A's
Internet connections is up, Gateway A is the Active Gateway, because its priority is higher
than that of Gateway B.
If both of Gateway A's Internet connections are down, it deducts from its priority 20 (for
the primary connection) and 30 (for the secondary connection), reducing its priority to 50.
In this case, Gateway B's priority is the higher priority, and it becomes the Active
Gateway.