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Transparent failover to a dial-out connection
IM/IMG4000 gateways can be configured so a dial-out ppp connection is automatically set up in the event of a disruption in the principal management network.
To set this up, when configuring the principal Network 1 (eth0) connection in System: IP specify Internal Modem (or the Dial Serial DB9 if you are using an external modem on the Console port) as the Failover Interface to be used when a fault has been detected with Network 1 (eth0). Then specify the Probe Addresses of two sites (the Primary and Secondary) that the IM/IMG4000 is to ping to determine if Network 1 (eth0) is still operational. Then set up the dial out modem:
- select the System: Dial menu option and the port to be configured (Serial DB9 Port or Internal Modem Port)
- in the Serial Settings sub-menu select the Baud Rate and Flow Control that will communicate with the modem
- in the Dial-Out Settings (FailOver) sub-menu check Enable Dial-Out and enter the access details for the remote PPP server to be called
In this mode, a dialout connection to a remote PPP server will automatically be set up and transparently take over the work of Network 1 (eth0), in the event Network 1 (eth0) becomes unavailable for any reason.
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