To check if Cisco licenses L-SL-20-DATA-K9= and L-SL-20-SEC-K9= are still valid, you can refer to the Cisco Ordering Guide for the Integrated Services Routers Generation 2 and look for the section on "Ordering Cisco IOS Software Images and Licenses". In this section, you will find the part numbers for the licenses for the Cisco 3900, 2900, and 1900 Series routers. The part numbers are:
- L-SL-20-DATA-K9= (Data License)
- L-SL-20-SEC-K9= (Security License)
You can use these part numbers to check the validity of the licenses through the Cisco License Manager or by contacting Cisco Support. However, the provided guide does not directly state the validity status of the licenses, so I recommend verifying with Cisco directly for the most accurate information.
As for your question about the product authorization key, generally, the key is tied to the specific hardware it was originally issued for. However, you may be able to transfer the license to a new device if the original hardware was decommissioned. This usually requires assistance from the Cisco Licensing Team.
Regarding a permanent file for the license, you can generate one through the Cisco License Manager. This file can be saved and it will be still valid even if the device is rebooted.
Please note that while licenses tend to be perpetual, Cisco's End User License Agreement (EULA) may specify certain conditions under which the license could become invalid. I strongly recommend consulting with Cisco or a Cisco authorized partner for comprehensive information.
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