I'm very confused by Cisco versions, but perhaps I'm just over thinking it. Are IOs versions and ASA versions the same? E.g. If I have an ASA 5510 and I type
and it comes back with
Cisco Adaptive Security Appliance Software Version 8.3(2) Device Manager Version 6.9(4)
does that mean it's running IOS 8.3?
Or will accept IOS 8.3 level commands?
Or do ASA devices have their own version separate from the IOS versions?
(p.s. the version numbers above are made up so they won't make sense).
More generally, how do you know which commands a Cisco device is going to accept? If you show up at a clients and start trying to do named access lists (which apparently started with IOS 11.2?) how do you know if they are going to work? Or do you just try, curse and revert to older commands on the fly if they aren't recognized?
I've searched long and hard and nothing seems to show what versions which commands should work on.