ZyXEL Communications ZyWall 110 - Device HA Technical Reference

Chapter 42 Device HA
ZyWALL USG Series User’s Guide
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42.3.3 Device HA Technical Reference
Device HA with Bridge Interfaces
Here are two ways to avoid a broadcast storm when you connect the bridge interfaces on two Zyxel
Devices.
First Option for Connecting the Bridge Interfaces on Two Zyxel Devices
The first way is to activate Device HA before connecting the bridge interfaces as shown in the following
example.
1 Make sure the bridge interfaces of the master Zyxel Device (A) and the backup Zyxel Device (B) are not
connected.
2 Configure the bridge interface on the master Zyxel Device, set the bridge interface as a monitored
interface, and activate Device HA.
3 Configure the bridge interface on the backup Zyxel Device, set the bridge interface as a monitored
interface, and activate Device HA.
Br0 {ge4, ge5}
Br0 {ge4, ge5}
Br0 {ge4, ge5}