Chapter 11 IPsec VPN for FortiOS 5.0 : IPv6 Configuration : RIPng — RIP and IPv6 : Network layout and assumptions
  
Network layout and assumptions
Basic network layout
Your internal R&D network is working on a project for a large international telecom company that uses IPv6. For this reason, you have to run IPv6 on your internal network and you have decided to use only IPv6 addresses.
Your network has two FortiGate units running the RIPng dynamic routing protocol. Both FortiGate units are connected to the ISP router and the internal network. This configuration provides some redundancy for the R&D internal network enabling it to reach the internet at all times.
All internal computers use RIP routing, so no static routing is required. And all internal computers use IPv6 addresses.
Where possible in this example, the default values will be used or the most general settings. This is intended to provide an easier configuration that will require less troubleshooting.
In this example the routers, networks, interfaces used, and IP addresses are as follows.
Table 76: Rip example network topology
Network
Router
Interface & Alias
IPv6 address
R&D
Router1
port1 (internal)
2002:A0B:6565:0:0:0:0:0
port2 (ISP)
2002:AC14:7865:0:0:0:0:0
Router2
port1 (internal)
2002:A0B:6566:0:0:0:0:0
port2 (ISP)
2002:AC14:7866:0:0:0:0:0
Figure 288: Network topology for the IPV6 RIPng example