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AirLink Helix User Guide
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switches to if the primary connection fails. Default primary interface is
Ethernet.
4. If needed, change the Primary Route IP and interval.
5. Click on Apply and reboot the box when prompted.
6. Plug in the Ethernet cable for the WAN connection in to WAN/LAN port of the
Helix.
How it works
When enabled, Helix will ping the Primary Route IP at the interval you have
configured. If one of these pings fails, Helix will immediately send another short
series of pings to that IP address. If these pings also fail, Helix will switch to using
the secondary Internet connection.
While the secondary Internet connection is being used, Helix will continue to ping
the Primary Route IP to determine when the connection is restored. When the
connection is restored, Helix will switch back to the primary connection.
IP Passthrough
IP Passthrough mode will pass the cellular WAN IP address directly through to
any client connected to WWAN/LAN port on the Helix. This may be necessary for
some VPN configurations or other enterprise applications. The Helix can also
continue to provide LAN IP addresses to clients connected through LAN port (or
Wi-Fi with supported devices). However WAN Failover, DMZ, and Port Forwarding
are not available and ACEmanager cannot be reached through port 1. Any client
connected to WWAN/LAN port must be setup with a static IP address and a
gateway address that matches the WWANIP address and gateway address. IP
passthrough works best when the cellular module is setup by the cellular carrier
to receive a public static IP address on the carrier network.
Figure 6-3: ACEmanager: WAN/Cellular - IP Passthrough