Licensing for IOS 15.x on 2851 routers

[derekdinehart]

Do I need to obtain license keys/files when upgrading a 2851 to IOS 15.x?  I'm getting a bit confused seeing the documentation that says 1) IOS has gone to a universal image and 2) that feature sets are unlocked based on the installed license.

I was able to download a feature specific IOS image for the 2851 and it did not bother me about licensing upon boot up.

I read one post on here that stated 2800/3800 series (G1) do not have to worry about the licensing piece and that it's just 2900/3900 series (G2) hardware that require it.

Thanks!

[paolo bevilacqua · Accepted solution]

The ISR G1 routers do not use an unversal images. Things remained the way they were before, with the addition that the product is end of sale now

[derekdinehart]

Excellent.  It's just a matter of upgrading the RAM and CompactFlash to run 15.x (which we are doing).  Thanks!

[paolo bevilacqua]

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[yallies]

hello Paolo

I've a planned migration from IOS 12 to 15 on ISR G1 , my customer worry about licensing issues, is there a Cisco document specifying that ISR G1 doesn't use Universal Image and licenses to activates features ?

thanks