ZyXEL Communications ZyWALL 110 Handbook page 408

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2 To test whether or not VPN failover is working, unplug wan1 of USG1. Then ping
from a PC in LAN1 of USG1 to a PC in LAN1 of USG2 and vice versa.
Check the VPN status of the USG1 in the MONITOR > VPN Monitor > IPSec screen.
PC of USG1 (192.168.1.34) > Window 7 > cmd > ping 192.168.11.33
Check the VPN status of the USG2 in the MONITOR > VPN Monitor > IPSec screen.
PC of USG2 (192.168.11.33) > Window 7 > cmd > ping 192.168.1.34
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