Firepower FTD and OSPF

[hadeelOth81]

Hello, 

I have a Firepower 3100 FTD cluster managed by FMC, deployed between two Cisco 9500 L3 switches. OSPF is configured on the FTD and both routers. During a failover (cluster role change), the OSPF neighbor relationship gets re-established, resulting in traffic loss. I have added virtual MAC addresses to the FTD interfaces but continue to observe the same behavior. Is this the expected behavior? Or am I missing something? 

Thank you

[Flavio Miranda]

@hadeelOth81 

 On the link below you can find valuable information for you scnario. Look for Non Stop Forwarding (NSF)

https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2020/pdf/BRKSEC-3032.pdf

[hadeelOth81]

@flavio Thank you so much for sharing the info. I will look into it.