Planning the network topology
How to set up your FortiWAN
A range of static IP addresses in a shared subnet
For example, ISP provides an ADSL link with an IP range 61.88.100.1 ~3 that netmask is 255.255.255.0 and default
gateway is 61.88.100.254. The result of subnet mask calculation shows there are 256 IP addresses in the subnet in
total, but only 3 IP addresses you are allocated. In this case, the default gateway is located in ISP’s network and your
ATU-R only transfers packets to the gateway. In the other words, you are allocated in the same subnet with the ISP’s
central office, and the ATU-R takes the action to connect the two network segments in the subnet. You are suggested
configure the WAN link as
Bridge Mode: Multiple Static IP
or
on FortiWAN for this
application.
FortiWAN Handbook
Fortinet Technologies Inc.
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