FTD HA Configuration

[Darren Thompson]

I have a Cisco 2120 in production and a 2110 in a standalone mode.  I am wanting to make a HA configuration with them but not sure it will work. Can a 2120 and a 2110 work in a HA configuration?

[Karan Belani]

What is the FTD version are you using? also if you are using FMC, kindly share the FMC version also.

[Darren Thompson]

7.2.8 for all

[MHM Cisco World]

You can not

Both FW must match HW and SW ver. 

MHM

[Marvin Rhoads · Accepted solution]

It's as @MHM Cisco World said - hardware models and software versions must match exactly.

Reference: https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/720/management-center-device-config-72/high-availability.html#ID-2107-00000019