Introductions:
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.
Router:
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 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.
|
Field |
Value |
Descriptions |
|
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:
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:
