User Manual
• For inbound OOB connection with this service, use Call Home with a Lighthouse/VCMS/CMS6110
or set up a VPN
In out of band access mode the internal cellular modem stays connected. The alternative is to set up
Failover mode on the console server as detailed in the next section.
4.7.2 Cellular failover setup
In this mode, the appliance continually pings nominated probe addresses over the main network
connection. In the event of ping failure, it dials out and sets up a dial-out PPP over the cellular modem
and access is switched to this network connection. When the main network connection is restored,
access is switched back.
This dial-out cellular connection is established in event of disruption to the main network. The cellular
connection remains idle and is only activated in event of a ping failure. This standby mode can suit remote
sites with expensive power or cellular traffic costs.
Once you have set up a carrier connection, the cellular modem can be configured for failover.
This tells the cellular connection to remain idle in a low power state. If the primary and secondary probe
addresses are not available, it brings up the cellular connection and connects back to the cellular carrier.
1. Navigate back to the Network Interface on the System >IP menu specify Internal Cellular
modem (cell modem 01) as the Failover Interface to be used when a fault has been detected
2. Specify the Probe Addresses of two sites (the Primary and Secondary) that the console server is
to ping to determine if the principal network is operational
3. In event of a failure of the principal network the 3G network connection is activated as the
access path to the console server and managed devices. Only HTTPS and SSH access is enabled
on the failover connection (which should enable an administrator to connect and fix the problem)
NOTE By default, the console server supports automatic failure-recovery back to the original state prior
to failover. The console server continually pings probe addresses while in original and failover
states. The original state is reestablished after three successful pings of the probe addresses
during failover. The failover state is removed once the original state has been re-established.
You can check the connection status by selecting the Cellular panel on the Status > Statistics menu
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