Hi have a redundant pair of ASA 5510s and I have uploaded the 8.3 code to flash of each ASA.
Is there a recommended order for setting boot order priority for the new 8.3 code and rebooting
the ASA? The is - would is be better to upgrade and reboot the standby ASA first or the
active ASA first? I don't have a lab to test this so need to make sure I don't get anything
wrong in the procedure. I went through the document below on upgrading but it does not
advise on dealing with the redundant pair. Thank-you.
PK is right on.
Here is the document with the details for an ASA Zero Downtime Upgrade. Watch out for your versions you need to "step up" and not jump.
You can do a hitless upgrade from 8.2 to 8.3.
Change the boot statement on the standby and reload it. It should come up in 8.3 as standby and synchronize with mate.
Change the boot system command on the active and make it standby and reboot it. The peer running 8.3 should be active while it is rebooting.
After it is up both are running 8.3 and they should establish failover.
I hope it helps.