Gre tunnels, Section 3.4.6, “gre tunnels – Amer Networks E5Web GUI User Manual
Page 174

This example shows how to configure a PPPoE client on the wan interface with traffic routed over
PPPoE.
CLI
Device:/> add Interface PPPoETunnel PPPoEClient
EthernetInterface=wan
Network=all-nets
Username=exampleuser
Password=examplepw
Web Interface
1.
Go to: Network > Interfaces and VPN > PPPoE > Add > PPPoE Tunnel
2.
Then enter:
•
Name: PPPoEClient
•
Physical Interface: wan
•
Remote Network: all-nets (as we will route all traffic into the tunnel)
•
Service Name: Service name provided by the service provider
•
Username: Username provided by the service provider
•
Password: Password provided by the service provider
•
Confirm Password: Retype the password
•
Under Authentication specify which authentication protocol to use
(the default settings will be used if not specified)
•
Disable the option Enable dial-on-demand
•
Under Advanced, if Add route for remote network is enabled then a new route will be
added for the interface
3.
Click OK
3.4.6. GRE Tunnels
Overview
The Generic Router Encapsulation (GRE) protocol is a simple, encapsulating protocol that can be
used whenever there is a need to tunnel traffic across networks and/or through network devices.
GRE does not provide any security features but this means that its use has extremely low
overhead.
Using GRE
GRE is typically used to provide a method of connecting two networks together across a third
network such as the Internet. The two networks being connected together communicate with a
common protocol which is tunneled using GRE through the intervening network. Examples of
GRE usage are:
Chapter 3: Fundamentals
174