Bidirectional Forwarding
In Fireware v12.9 or higher, you can use a simplified implementation of bidirectional forwarding (BFD) for dynamic routing. BFD is a network protocol used to detect faults between two routers or switches connected by a link.
To implement BFD on your Firebox:
- Add a new firewall policy.
- In the policy, specify the BFD protocols (UDP 3784 and 4784).
- In the From list, specify the interface that receives OSPF or BGP messages from neighbors.
- In the To list, specify the Firebox.
Next, enable BFD in either OSPF or BGP. For OSPF, enable BFD in the interface context:
interface vlan20
ip ospf bfd
exit
For BGP, append the BFD keyword in the neighbor command line:
router bgp 26
bgp router-id 169.254.1.26
neighbor 169.254.1.53 remote-as 53
neighbor 169.254.1.53 bfd
!
address-family ipv4 unicast
redistribute static
exit-address-family
exit
You cannot configure any additional parameters for BFD, such as the peer address or timer and interval parameters.