Route-Map on Fortigate

Often times you need to create a route map on a device to control what routes the device is advertising.  Here is my scenario.

Branch location has a ‘Data‘ VLAN (ID100  172.22.100.0/24) and a ‘Voice‘ VLAN (ID101 172.22.101.0/24).  I am using OSPF to route across to the main location and all other branches.

Creating an ‘access-list’

The access list will be used to match something.  In my example below, it is the two network 172.22.100.0/24 and 172.22.101.0/24

config router access-list
edit "allowed-connected-routes"
config rule
edit 1
set prefix 172.22.100.0 255.255.255.0
set exact-match enable
next
edit 2
set prefix 172.22.101.0 255.255.255.0
set exact-match enable
next
end

As you can see above, we create a ‘rule‘.  By issuing an ‘edit 3‘, ‘edit 4‘ etc, you can add additional networks.

Then once you have the access list, we will create the route-map

Creating the Route Map

config router route-map
edit "connected-to-ospf"
config rule
edit 1
set match-ip-address "allowed-connected-routes"
next
end

Then, we will configure the OSPF

Configuring OSPF

config router ospf
set router-id 172.30.255.1
config area
edit 0.0.0.0
next
end
config ospf-interface
edit "LAN1"
set interface "lan1"
set dead-interval 40
set hello-interval 10
next
end
config network
edit 2
set prefix 172.30.255.1 255.255.255.0
next
end
set passive-interface "ssl.root" "wan" "colo-vpn" "lan2" "lan3" "lan4"
config redistribute "connected"
set status enable
set routemap "connected-to-ospf"
end
config redistribute "static"
end
config redistribute "rip"
end
config redistribute "bgp"
end
config redistribute "isis"
end
end

As you can see, the focus should be on the ‘redistribute connected‘ section.  This method can be used for any of the dynamic routing protocols.

Hope this helps.