We have cisco router. On its box/package ISR 4331/K9 is written. I am watching a youtube video at below link, its title has word ISR 4331


Now i am confused, whether this video is about our router or about any other router?

1 Answer 1


K9 is both an ordering code as well as a designator in an image filename to indicate that the unit has the strong encryption license included. On a ASA, that means the 3DES-AES license.


So, unless you're in a country affected by export control, you'll always have a -K9 unit. If not, the license for upgrading is free.

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