how do I set this up?
Software tokens can be extended with new software tokens without end user interference.
Please be aware that new software tokens will need to be purchased through RSA in order to extend your current tokens.
Take a look at the below document to learn about prerequisites for extending software token lifetimes:
Software Token Lifetime Extension
Once you have the new tokens in your Authentication Manager this document may be helpful with the extension process:
Extend Software Token Lifetimes
The short answer is you can extend them as far as the expire date of the new token you are using to extend them with.
The old token simply inherits the expire date, the new token gets deleted from the system, and the old token is permanently using the new date (until possibly extended again).
When listing tokens, the old token shows the serial number of the 'extension' token.
This screenshot shows two tokens from the same batch 000020735xxx, both are extended, but I used different new token batch to extend them, so you see different expire dates, and the extension tokens used are now deleted from the system and you only see the serial number of the extension token matched up with the older, now working, token.
If you unassign these tokens, the extension token serial number remains paired up with the older serial number.
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