Digi Connect IT 4 User Manual page 416

Virtual Private Networks (VPN)
(config vpn iptunnel gre_example)> key value
(config vpn iptunnel gre_example)>
where value is an interger between 0 and 4294967295, or an IP address.
8. (Optional) Enable the device to reply to Cisco GRE keepalive packets:
(config vpn iptunnel gre_example)> keepalive true
(config vpn iptunnel gre_example)>
9. Save the configuration and apply the change:
(config vpn iptunnel gre_example)> save
Configuration saved.
>
10. Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection
menu. Type quit to disconnect from the device.
Digi Connect IT® 4 User Guide
Generic Routing Encapsulation (GRE)
416