Adding a second FMC to a production FMC with FTD deployment.

[Heino Human]

Hi guys, 

We have a couple 9300 FTDs managed by a single 4600 FMC. 

We are getting a second FMC in a few weeks and wanted to know how would I add it to the existing setup? 

I can't find anything on Cisco's website. 

What I'm thinking is:

1. Restore the new FMC with the existing FMC's configuration.

2. Remove the FTDs HA pair from the FMC

3. Setup HA for the FMC's 

4. Add the FTDs back as a HA pair. 

Has anyone tried to do this? 

Thank you

Heino 

[manabans · Accepted solution]

FMC HA can be created without disturbing the already registered devices on the existing FMC. The primary FMC backup must not be restored to the secondary FMC.
Reference: https://www.cisco.com/c/en/us/td/docs/security/firepower/640/configuration/guide/fpmc-config-guide-v64/firepower_management_center_high_availability.html

[Heino Human]

Thank you for that. It is exactly what I was after. It does not seem to be a big job, I had myself prepared for the worst