Digi TransPort WR11 - Configure GRE Tunnel Parameters

Configuring network interfaces ConfigureGeneric Routing Encapsulation (GRE)interfaces
Digi TransPort® Routers User Guide
268
Configure GRE tunnel parameters
ÉWeb
1. Go to Configuration > Network > Interfaces > GRE >Tunnel n.
2. Configure the GRE tunnel parameters.
Description
A memorable name for this GRE instance, to make it easier to identify it.
IP address
The IP address of the virtual interface the tunnel uses. Use with the Mask parameter. You must
enter this parameter for the tunnel to work.
Mask
Use this parameter with the IP address parameter to clarify the subnet in use on the virtual
interface. This would normally be a 30-bit mask as this is a point-to-point link
(255.255.255.252).
Source IP Address
The two sub options here allows you to specify a source address from a specified interface or
by manually assigning an address. If you do not select either option, the router uses the default
address for the route through which the packet leaves the router. If the interface through
which the GRE packets exit does not have NAT enabled, the router uses the default router
address, which is the Ethernet 0 address.
Use Interface:
The GRE tunnel source interface, which allows the tunnel end point to be a physical interface
rather than a virtual IP address. This is for using GRE without IPSec. Do not use these
parameters if the parameter below uses the source address. Select the available interface
type and number from the drop-down boxes.