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Setting up a GRE tunnel between Linux and G806


Generic Routing Encapsulation (GRE) is a tunneling protocol used to establish point-to-point connections between remote private networks. GRE tunnels encapsulate data packets to route other protocols over IP networks.



To create a new GRE Tunnel instance, go to the Interface -> Add new interface Tunnel section, enter a custom name and click the 'Add' button. A GRE instance with the given name will appear in the "GRE" list.

To create a new GRE Tunnel instance


To begin configuration, click the 'Edit' button located next to the instance. Refer to the figure and table below for information on the fields located in the GRE Tunnel instance configuration section.

Configuration of Generic Routing Encapsulation (GRE)




Remote Address

string; default: none

The Public IP address of the oppositeserver

Local Address

string; default: none

The Public IP address locally

Remote Tunnel Address

string; default: none

Virtual IP address of the oppositeserver

Local Tunnel Address

string; default: none

Virtual IP address the GRE Tunnel instance locally


Virtual machine configuration:

Set the WAN port IP address of GRE of both sides:

Set the virtual IP address the GRE Tunnel instance of both sides:

Set the virtual IP address the GRE Tunnel instance

Check the newly generated network card:

Check the newly generated network card


Testing the setup 

If you've followed all the steps presented above, your configuration should be finished. But as with any other setting, it is always wise to test the setup to make sure that it works properly. To check a GRE connection, login in CMD mode in one end device under the routers.

From there, you should then be able to ping the opposite instance's LAN IP and end device IP. To use a ping command, type ping <ip_address> and press the "Enter" key on your keyboard: 

Testing the setup of Generic Routing Encapsulation

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