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EOL & EOSL Dates and Details

XR-NCS4K-521K9 EOL Data

End of-Life Announcement (EOL) 01/15/2019
End of Sale (EOS) 04/16/2019
End of Service Life (EOSL) 04/30/2020
Manufacturer Cisco
Category Software
Product Series Cisco NCS 4000
Part Number XR-NCS4K-521K9
Model Number XR-NCS4K-521K9
Release Date
Replacement Part Number XR-NCS4K-6142K9
Replacement Product Name Delivery of XR 6.1.42 for NCS4K

Official EOL: Additional Information

End Of Phone Support: OS SW 04/15/2020
Last Ship Date: OS SW 07/15/2019
End Of SW Maintenance Releases Date: OS SW 04/15/2020
Official EOL Notice View Official EOL Documentation

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Explore More EOL Dates

Manufacturer Part Number Product Name EOL Date
Cisco XR-NCS4K-601K9 Cisco NCS 4000 IOS XR Software Release 6.0.1 USB key- RTU License 01/15/2018
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Cisco XR-NCS4K-6142K9 Cisco Delivery of XR 6.1.42 for NCS4K 06/13/2025
Cisco E-NCS4K-651K9= Cisco E-delivery of XR 6.5.1 for NCS4K; grants RTU license 06/13/2025
Cisco XR-NCS4K-6142K9= Cisco USB Key delivery of XR 6.1.42 for NCS4K 06/13/2025
Cisco XR-NCS4K-6525K9 Cisco Delivery of XR 6.5.25 for NCS4K; grants RTU license 06/13/2025
Cisco NCS4016-FC-M= Cisco NCS 4016 Agnostic Cross connect - Multichassis 12/14/2018
Cisco E-NCS4K-6526K9= Cisco E-delivery of XR 6.5.26 for NCS4K; grants RTU license 06/13/2025
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Cisco E-NCS4K-6525K9= Cisco E-delivery of XR 6.5.25 for NCS4K; grants RTU license 06/13/2025
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