33: Configuring a GRE interface 
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© Virtual Access 2017 
GW1000 Series User Manual 
Issue: 1.9    Page 305 of 350 
33 Configuring a GRE interface 
General Routing Encapsulation (GRE) is a tunnelling protocol used for encapsulation of 
other communication protocols inside point to point links over IP. 
33.1  Configuration packages used 
33.2  Creating a GRE connection using the web interface 
To create GRE interfaces through the web interface, in the top menu, select Network -
>Interfaces. 
There are three sections in the Interfaces page. 
Shows existing interfaces and their status. You can create new, and edit existing 
interfaces here. 
In this section you can map device ports to Ethernet interfaces. Ports are marked 
with capital letters starting with 'A'. Type in space separated port numbers in the 
port map fields. 
ATM bridges expose encapsulated Ethernet in AAL5 connections as virtual Linux 
network interfaces, which can be used in conjunction with DHCP or PPP to dial 
into the provider network. 
 
In the Interface Overview section, click Add new interface. The Create Interface page 
appears.  
 
Figure 151: The create interface page