EOSL ≤ 12 months
The Cisco One Hardware reaches End of Service Life (EOSL) on 31 Oct 2027.
End of sale
28 Oct 2022EOSL
31 Oct 2027
28 Oct 2022EOSL
31 Oct 2027
- Manufacturer
- Cisco
- Product family
- 3900 Series Integrated Services Routers ISR
- Models / part numbers
- C1-CISCO4221/K9, C1-CISCO4221T-P/K9, C1-CISCO4321/K9, C1-CISCO4321T-P/K9, C1-CISCO4331-DC/K9, C1-CISCO4331/K9, C1-CISCO4331T-P/K9, C1-CISCO4351/K9, C1-CISCO4431/K9, C1-CISCO4451/K9, C1-ASR1001-HX/K9, C1-ASR1002-HX/K9
- Category
- Router
- End of sale / EOL
- 28 Oct 2022
- End of Service Life
- 31 Oct 2027
- Source
- OEM end-of-life notice · view source
- Notes
- Cisco end-of-life bulletin (announced 2022-04-29). Covers 12 part numbers, e.g. C1-CISCO4221/K9, C1-CISCO4221T-P/K9, C1-CISCO4321/K9.
- Last checked
- 14 Nov 2026
Frequently asked questions
When is the Cisco One Hardware End of Service Life?
Cisco One Hardware reaches End of Service Life on 31 Oct 2027, after End of Sale on 28 Oct 2022.
What happens after the One Hardware reaches EOSL?
Cisco stops selling support contracts, spare parts and firmware updates. The hardware keeps working, but break/fix, parts and engineering help must come from a third-party maintenance provider.
Can SLA Expert support the One Hardware after EOSL?
Yes — SLA Expert provides multi-vendor third-party maintenance, spares and field engineering for post-EOSL Cisco equipment across the Middle East and Africa. Request a quote to confirm coverage for your units.
Related Cisco EOSL dates
| Model | Category | End of sale | EOSL date | Status | |
|---|---|---|---|---|---|
| ATM-DS3/E3 Cable CAB-ATM-DS3/E3 | Router | 26 Dec 2013 | 31 Dec 2018 | Past EOSL | |
| T3/E3 Network Module NM-1T3/E3 | Router | 11 Apr 2014 | 30 Apr 2019 | Past EOSL | |
| 12000 Series 1-port OC-48c/POS Line Cards, FC CONNECTOR OC48E/POS-LR-FC-B, OC48E/POS-SR-FC-B | Network Module | 27 Dec 2001 | 27 Dec 2006 | Past EOSL | |
| SOHO 71, 76, 77, 77H, 806, 826, 827, and 827H Routers CISCOSOHO71, CISCOSOHO76, CISCOSOHO77-50, CISCOSOHO77H, CISCO806, CISCO826, CISCO827, CISCO827H | Router | 30 Apr 2004 | 30 Apr 2009 | Past EOSL | |
| Catalyst 6509-NEB Chassis and Cisco Catalyst 6500 1300W AC Power Supply WS-C6509-NEB, WS-C6509-NEB-FAN, WS-C6509NEB-1300A, WS-C6509NEB-1300D, WS-C6509NEB-2500A, WS-C6509NEB-2500D | Network Switch | 05 Nov 2004 | 30 Nov 2009 | Past EOSL | |
| EOS & EOL: Select Cisco Catalyst 6500 Series Components-Updated WS-C6509-NEB, WS-CAC-1300W | Network Switch | 31 Dec 2004 | 31 Dec 2009 | Past EOSL |