Netopia 3346N-ENT User Guide (en)

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5-14  Firmware User Guide
VPN force-all
GRE tunnelling suppor ts “VPN force-all,” which forces all traffic coming from the LAN onto the GRE tunnel. You 
accomplish this by setting the default route to go through the GRE tunnel. A secondar y host route where all 
tunneled GRE packets route to the actual WAN inter face can be configured as a static route when required.
The following table outlines various force-all configurations for different networking scenarios; all other options 
can safely use their default values:
Easy Setup
System Configuration Menu
GRE Profile 
Encapsulation 
Menu
GRE Profile IP 
Parameters Menu
Static WAN IP
IP = 
some_IP_address
Mask = 
some_IP_mask
Data Link 
Encapsulation = 
1483, 1490, HDLC, 
PPP
IP Default Gateway = 
127.0.0.2
Gateway Static Route:
Destination Network =
GRE 
Remote_Tunnel_End_Point
Destination Netmask = 
Remote_Tunnel_End_Point_
netmask
Next Gateway = local_WAN_IP
Remote Tunnel End 
Point = 
peer_tunnel_
IP_address
Remote Member IP 
= 127.0.0.2
Remote Member 
Mask cannot be 
255.255.255.255
Dynamic WAN IP
IP = 0.0.0.0
Mask = 0.0.0.0
IP Default Gateway = 
127.0.0.2
Gateway static route is 
recommended
see above
see above
Static PPPoE
Remote IP = 
some_IP_address
Remote Mask = 
some_IP_mask
see above
see above
see above
Auto PPPoE
Remote IP = 
127.0.0.2
Remote Mask = 
255.255.255.255
IP Default Gateway = 
127.0.0.3
see above
Remote Member IP 
= 127.0.0.3
Remote Member 
Mask cannot be 
255.255.255.255
Note:
A GRE tunnel cannot transmit RIP routes over a force-all tunnel, or with a remote member IP with a 
host par t of all zeros.