if I have a new router, that has the ipbase image on it (as ordered unfortunately), can I just simply download the ipbasek9, or even the advipservicesk9 image and it be completely operable? As in, will I have full SSH support and all will be good?
I just did a little peaking at some 2811/3560 IOS version comparisons on the Cisco Software Advisor web page. Looks like the are now calling IP BASE the older IP BASE W/Crypto. My recollection of IP BASE includes a feature set called IP BASE W/O Crypto.
You might be in luck if IP BASE is the "bottom level" authorized IOS on a basic device purchase.
The basek9 IOS feauture set gives you more than just SSH V2 stuff. You might consider jumping on the Software Advisor and comparing the feature sets on a couple of IOS feature images
I bet they upped the "BASE" feature set to account for the ever increasing default security features required at the vast majority of customer sites.