Draytek Vigor2200 Series, User Manual

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VPN-19
VPN
Remote Network Mask: (Must specify) Specify the netmask
of the remote network.
RIP Direction: The option specifies the direction of RIP
(Routing Information Protocol) packets through the ISDN
WAN connection.
RIP Version: Selects the RIP protocol version. Specify Ver. 2
for greatest compatibility.
For NAT operation, treat remote sub-net as: The router has
two local IP networks: the1st subnet and 2nd subnet. Here
you set which subnet will be used as local network for VPN
connection and exchange RIP packets with the remote
network. Usually set to "1st subnet " for routing between the
1st subnet and the remote network.