Lifecycle record
C1-CISCO4431-K9 EOL & EOSL Dates
Cisco ONE ISR 4431 (4GE,3NIM,8G FLASH,4G DRAM,IPB)
Lifecycle status
EoS - Sales Ended
C1-CISCO4431-K9 is no longer sold by Cisco; end of sale was 2022-10-28. Support continues until 2027-10-31. Recommended replacement: ISR4431-K9.
Last checked: 2026-06-16
EOL & EOSL Dates and Details
| End-of-Life Announcement (EOL) | 2022-04-29 |
|---|---|
| End of Sale (EOS) | 2022-10-28 |
| End of Service Life (EOSL) | 2027-10-31 |
| Manufacturer | Cisco |
| Category | Routers |
| Product Series | Cisco ISR 4400 |
| Part Number | C1-CISCO4431-K9 |
| Model Number | C1-CISCO4431/K9 |
| Release Date | - |
| Replacement Part Number | ISR4431-K9 |
| Replacement Product Name | Cisco ISR 4431 (4GE,3NIM,8G FLASH,4G DRAM,IPB) |
Lifecycle Timeline
Recorded lifecycle milestones in date order.
Additional Information
Support milestones and the official source recorded for this model.
| Last Ship Date: HW, License | 2023-01-26 |
|---|---|
| End Of New Service Attachment Date: HW | 2023-10-28 |
| End Of SW Maintenance Releases Date: HW | 2023-10-28 |
| End Of Routine Failure Analysis Date: HW | 2023-10-28 |
| End Of Vulnerability/Security Support: HW | 2025-10-27 |
| End Of Service Contract Renewal Date: HW | 2027-01-23 |
| Last Date Of Support: HW | 2027-10-31 |
| Official EOL Notice | View Official EOL Documentation |
More Cisco ISR 4400 EOL Dates
| Part Number | Product Name | EOL Announcement | End of Sale |
|---|---|---|---|
| C1-CISCO4451-K9 | Cisco ONE ISR 4451 (4GE,3NIM,2SM,8G FLASH,4G DRAM, IPB) | 2022-04-29 | 2022-10-28 |
| FL-44-HSEC-K9 | Cisco U.S. Export Restriction Compliance license for 4400 series | 2023-10-26 | 2024-01-26 |
| FL-44-PERF-K9 | Cisco Performance on Demand License for 4400 Series | 2023-10-26 | 2024-01-26 |
| ISR4431-AX-K9 | Cisco ISR 4431 AX Bundle with APP and SEC license | 2022-11-07 | 2023-11-07 |
| ISR4431-AXV-K9 | Cisco ISR 4431 AXV Bundle,PVDM4-64 w/APP,SEC,UC Lic | 2022-11-07 | 2023-11-07 |
| ISR4431-DNA | Cisco ISR 4431 (4GE,3NIM,8G FLASH,4G DRAM,IPB) with DNA sub | 2022-11-07 | 2023-11-07 |
| ISR4431-EN-3Y-1G | Cisco VIPTELA-ISR4431 3Year 1Gbps Enterprise Bundle | 2022-05-06 | 2022-11-04 |
| ISR4431-K9 | Cisco ISR 4431 (4GE,3NIM,8G FLASH,4G DRAM,IPB) | 2022-11-07 | 2023-11-07 |