BFD static problem

[Lei.LIM]

Hi

I set up BFD and shut down R2 gigabitethernet 0/1.

And the routing table of R1.

There is still routing to 3.3.3.3.

Did I set it up wrong?

In this situation, is it impossible to remove the routing of 3.3.3.3 from the routing table of R1?

Thank you.

[MHM Cisco World]

can I see the config of BFD ?

[Lei.LIM]

here 

thanks

[MHM Cisco World]

BFD detect the 192.168.1.2 next-hop UP not the 192168.2.x?
this is why the BFD not detect this down interface 
to make you Lab work
1- add SW between two router R1 and R2 
2- shut the link between SW and R1

[Lei.LIM]

Well, thank you for your answer.

If so, what protocol should be used in this situation to remove routing from the routing table of R1 to 3.3.3.3?

Also, could you answer my other questions about the outgoing interface?

Thank you.

[MHM Cisco World]

for outing interface, I will do lab and test my idea first.
for this case 
IP SLA reachability
is good solution here 

[Lei.LIM]

OK I'll waiting for your answer

And I'll looking for IP SLA reachability's detail

thank you for your help!

[Lei.LIM]

Is it possible if R2 gigabitethernet 0/1 is down,

Can R1 detect link down, and remove 3.3.3.3 routing table?

If it possible can you tell me R1's basic config?

thanks

[MHM Cisco World]

ip sla 10
icmp-echo 192.168.2.2 
!
ip sla schedule 10 life forever start now
!
track 10 ip sla 10 reachability 
!
ip route 3.3.3.3 255.255.255.255 192.168.1.2 track 10

[Lei.LIM]

Do I need to add 192.168.2.0 255.255.255.0 192.168.1.2 routing on R1?

Is there any way possible without this routing?

thanks

[MHM Cisco World]

since it not direct connect then you need this static route.

[Lei.LIM]

So I need to check if loopback ip is output through the outgoing interface. Ha ha.
If this is possible, I think it is probably possible to construct it.
What do you think?

[MHM Cisco World]

check my answer above

[MHM Cisco World]

the R1-R2 interface not be down (as photo attach)
the R2-R3 down
How R1 detect it??
you need IP SLA
otherwise the R1 always forward traffic and traffic DROP in R2.

second for R1-R2
that why I ask you add SW, try add SW, and shut down the interface in R2, Does R1 detect it?
NO
here you need IP SLA.

[Lei.LIM]

I'll check more

thank you!