Border Gateway Protocol (BGP)

To configure the FortiGate interfaces – CLI

config system interface edit port1

set alias internal

set ip 10.11.101.110 255.255.255.0 set allowaccess http https ssh

set description “Company internal network”

set status up next

edit port2

set alias external1

set ip 172.21.111.5 255.255.255.0 set allowaccess https ssh

set description “ISP1 External BGP network”

set status up next

edit port3

set alias external2

set ip 172.22.222.5 255.255.255.0 set allowaccess https ssh

set description “ISP2 External BGP network”

set status up next

end

 

To configure default routes for both ISPs – web-based manager

1. Go to Router > Static > Static Routes.

2. Delete any existing routes with a IP/Mask of address of 0.0.0.0/0.0.0.0

3. Select Create New, and set the following information.

Destination IP/Mask                 0.0.0.0/0.0.0.0

Device                                         port2

Gateway                                     172.21.111.5

Distance                                     10

4. Select OK.

5. Select Create New, and set the following information.

Destination IP/Mask                 0.0.0.0/0.0.0.0

Device                                         port3

Gateway                                     172.22.222.5

Distance                                     15

6. Select OK.


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