Best practice for Upgrading ASA

YusufIssa — Mon, 24 Feb 2020 22:21:43 GMT

Hi there!

We have HQ with with 4 branches, there're ASA HA (Active/Standby) in every location, and HQ and 3 branches are connected via MPLS and only one branch connected to HQ via site-to-site VPN. We're planning to upgrade ASA firmware to 9.12.

As I haven't done the upgrade before, I'm looking for the best practice to do the upgrade and what are the potential caveats that I might run into.

These are some info about the current ASAs:

HQ : ASA 5525,ASA Version 9.6(3)1,asdm_791.bin

Branch (S2S VPN to HQ): ASA5515, ASA Version 9.9(2), asdm-7101.bin

Branch 2: ASA5525, ASA Version 9.2(2)4 , asdm-7221.bin

Branch 3 : ASA5516 , ASA Version 9.8(2)

Branch 4 : ASA5515, ASA Version 9.2(2)4 , asdm-7221.bin

Note: I will be doing the upgrade remotely (I'll have access via teamviewer to every ASA (ASDM/SSH) in every location)

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Best practice for Upgrading ASA

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