Digi TransPort WR11 - Configure Advanced GRE Parameters

Configuring network interfaces ConfigureGeneric Routing Encapsulation (GRE)interfaces
Digi TransPort® Routers User Guide
271
Configure advanced GRE parameters
ÉWeb
1. Go to Configuration > Network > Interfaces > GRE >Advanced.
2. Configure the advanced GRE tunnel parameters.
Metric
The connected metric of an interface. The default metric of a connected interface is 1. By
allowing the interface to have a higher value (lower priority), static routes can take preference
to interfaces. For normal operation, leave this value unchanged.
MTU
The maximum transmission unit. In this text box you can enter the greatest amount of data
that can be transferred in one physical packet. The default value is 1400.
Include Tunnel Key
The interface normally uses this parameter with multi GRE (mGRE). The tunnel key adds an
extra field to the GRE header where a key number can be applied. When enabled, incoming GRE
packets must have a matching tunnel key number to be accepted by this tunnel. When enabled,
the IP address parameter is not required.
Enable the firewall on this GRE tunnel
Turns Firewall script processing on or off for this interface. If using the firewall for problem
detection on a tunnel interface, the interface to put OOS will need to be specified, such as:
pass out br eak end on t un n f r om any t o 100. 100. 100. 29 por t =4000
f l ags S! A i nspect - st at e oos ppp n 5