FTD re-register to FMC chassis mode

[glsparks]

Deployed a 3100 in chassis mode to the FMC a few days ago. All went to plan.

Determined we needed to change the IP so decided just to delete the device from FMC and re-provision it.

On the FTD via local-mgmt did a erase configuration. The device wiped fine and rebooted.

Went through the setup and set the new ip manager, registration key NAT-ID etc.

Now the device will not register to the FMC. It continually times out at the secured connection point.

Pings etc all work fine.

How do I resolve this? Sounds like something is stuck in the FMC somewhere.

[Aref Alsouqi]

Try please to check the following log from expert mode on the FTD whilst you are trying to register it to the FMC, it should give you some indications of the reason why it is failing.

tail -f /var/log/messages | grep 'the FMC IP address'

[glsparks]

How do you get into expert mode when the device is in Chassis mode? You can't go to FTD as that is not available.

[glsparks]

Its finally deployed. Took over 20 attempts.

[Aref Alsouqi]

My bad then, sorry, I didn't realize the FTD wasn't available yet, and glad to know it finally worked.

[glsparks]

I think the registration process must be particularly sensitive to latency. Was experiencing somewhat high latency at the time 20ms or thereabouts the devices was being provisioned remotely. I'll know for next time.