ZyXEL Communications ZyWall 110 User Manual page 551

Figure 366 Virtual Router
Cluster ID
You can have multiple ZyWALL/USG virtual routers on your network. Use a different cluster ID to
identify each virtual router. In the following example, ZyWALL/USGs A and B form a virtual router
that uses cluster ID 1. ZyWALL/USGs C and D form a virtual router that uses cluster ID 2.
Figure 367 Cluster IDs for Multiple Virtual Routers
Monitored Interfaces in Active-Passive Mode Device HA
You can select which interfaces device HA monitors. If a monitored interface on the ZyWALL/USG
loses its connection, device HA has the backup ZyWALL/USG take over.
Enable monitoring for the same interfaces on the master and backup ZyWALL/USGs. Each
monitored interface must have a static IP address and be connected to the same subnet as the
corresponding interface on the backup or master ZyWALL/USG.
Virtual Router and Management IP Addresses
• If a backup takes over for the master, it uses the master's IP addresses. These IP addresses are
know as the virtual router IP addresses.
Chapter 34 Device HA
A
B
A
B
C
D
ZyWALL/USG Series User's Guide
551
1
2