FMC Changing the IP Address

Well..if you were wondering if changing the IP address of Cisco FMC still works of when I originally posted six years ago...It does! I was running FMC 7.4.2.2 at as of this post and following my own advice works pretty well. It's also funny that although I'm working with a different company, we had the same goal -- Migrating data centers!

Just like before running this command under expert within the FMC:

sudo /usr/local/sf/bin/configure-network

And follow the prompts, for the most part this worked out of the box, just waiting for firewalls to come back into a green status. Although there was one other thing that I had to do which was edit the managers within the FTD for only some of the devices. As they didn't come back into play automatically.

So running the following commands, while on the FTD we can run the command show managers which will output something like this:

> show managers
Type                           : Manager
Host                           : 192.168.15.10
Display name                   : 192.168.15.10
Version                        : 7.4.2.2 
Identifier                     : e3b5c8f0-6a2d-11ee-9a3b-0242ac120002
Registration                   : Completed
Management type                : Configuration and analytics

Look/copy the identifier UUID and run the following command to change the manager host IP address.

configure manager edit identifier e3b5c8f0-6a2d-11ee-9a3b-0242ac120002 hostname 192.168.20.10
Updating hostname from 192.168.15.10 to 192.168.20.10
Manager hostname updated.

If you check into FMC you should see your device go green. Although the next command is not needed as its just the display name its best to change that as well with the following commands.

configure manager edit identifier e3b5c8f0-6a2d-11ee-9a3b-0242ac120002 displayname 192.168.20.10
Updating displayname from 192.168.15.10 to 192.168.20.10
Manager displayname updated.

We can then verify it:

> show managers
Type                           : Manager
Host                           : 192.168.20.10
Display name                   : 192.168.20.10
Version                        : 7.4.2.2 
Identifier                     : e3b5c8f0-6a2d-11ee-9a3b-0242ac120002
Registration                   : Completed
Management type                : Configuration and analytics

That is it. Still pretty easy like it was six years ago. You might be wondering what does the show managers command look like if a device automatically connected? Well it has the updated host IP address of the FMC, but the display is the old name which might be ok to you, if not change it.

As always I hope this information is helpful!