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Ask the Expert- SD-WAN

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ASA upgrade 8.2.x to 9.1.x ?

Hi,

I have a project to upgrade an ASA 5520 to 9.1.x, then add another ASA for failover.  What will be the correct way ?

I had the 2 Gb memory.

I have rewritten all nat statements (during my other 8.2 to 8.3 or 8.4 upgrade project, the nat conversion was catastrophic, so I rewrite all now).

Can I upgrade directly to v9 ? Or 8.2 -> 8.4 -> 9.1 ?

I think to :

- inject actual config in the new ASA in 8.2

- remove nat statement

- upgrade to 8.4

- configure new nat

- upgrade to 9

- connect the new ASA to the network and deconnect the other ASA

- test

- upgrade old ASA to 8.4 or 9 directly ?

- configure failover

Thanks !

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Cisco Employee

ASA upgrade 8.2.x to 9.1.x ?

If you are going to rewrite all the NAT statement, I would suggest that you upgrade directly from 8.2 to 9.1.

Then rewrite the NAT statement.

Then upgrade the other ASA for failover to 9.1 if it hasn't already been upgraded.

Lastly configure the failover.