Digi TX40 User Manual page 585

Virtual Private Networks (VPN)
1. Click Network > Interfaces.
2. For Add Interface, type gre_interface2 and click .
3. For Zone, select Internal.
4. For Device, select the GRE tunnel created in
5. Click to expand IPv4.
6. For Address, type 172.31.0.2/30 for a virtual IP address on the GRE tunnel.
7. Click Apply to save the configuration and apply the change.

Command line
1. At the command line, type config to enter configuration mode:
> config
(config)>
2. Add an interface named gre_interface2:
(config)> add network interface gre_interface2
(config network interface gre_interface2)>
TX40 User Guide
Generic Routing Encapsulation (GRE)
Task three (IP tunnel: gre_tunnel2).
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