Lifecycle record
IOS-SOFTWARE-RELEASE-15-1-1-SY EOL & EOSL Dates
Cisco Catalyst 6500 IOS Software Release 15.1(1)SY
Lifecycle status
In EOSL Phase
IOS-SOFTWARE-RELEASE-15-1-1-SY reached its last date of support on 2019-10-31. Cisco support services are no longer available for this model. Recommended replacement: IOS-SOFTWARE-RELEASE-15-1-2-SY.
Last checked: 2026-06-16
EOL & EOSL Dates and Details
| End-of-Life Announcement (EOL) | 2014-04-30 |
|---|---|
| End of Sale (EOS) | 2014-10-29 |
| End of Service Life (EOSL) | 2019-10-31 |
| Manufacturer | Cisco |
| Category | Switches |
| Product Series | Cisco Catalyst 6500 |
| Part Number | IOS-SOFTWARE-RELEASE-15-1-1-SY |
| Model Number | IOS Software Release 15.1(1)SY |
| Release Date | 2012-03-20 |
| Replacement Part Number | IOS-SOFTWARE-RELEASE-15-1-2-SY |
| Replacement Product Name | Cisco IOS Software Release 15.1(2)SY for Cisco Catalyst 6500 Series Switches |
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 | 2014-10-29 |
|---|---|
| End Of SW Maintenance Releases Date: HW | 2015-04-30 |
| End Of Vulnerability/Security Support: HW | 2015-10-29 |
| Official EOL Notice | View Official EOL Documentation |
More Cisco Catalyst 6500 EOL Dates
| Part Number | Product Name | EOL Announcement | End of Sale |
|---|---|---|---|
| BF-S720-64MB-RP | Cisco Bootflash for SUP720-64MB-RP | 2014-10-31 | 2015-07-31 |
| BF-S720-64MB-SP | Cisco Catalyst 6500 64MB bootflash | 2014-10-31 | 2015-07-31 |
| CF-ADAPTER | Cisco Compact Flash Adapter for Sup720/3B/3BXL | 2014-10-31 | 2015-07-31 |
| CISCO-IOS-SOFTWARE-RELEASE-15-0-1-SY | Cisco Catalyst 6500 IOS Software Release 15.0(1)SY | 2014-04-30 | 2014-10-29 |
| CLK-7600 | Cisco Spare Clock card for CISCO7603, CISCO7606 or CISCO7609 (FRU) | 2020-07-31 | 2020-10-30 |
| CONNECTOR-KIT | Cisco Connector Kit | 2020-07-31 | 2020-10-30 |
| FAN-MOD-09 | Cisco Fan Mod CISCO7609 (2 required)/Cat6509-NEB-A (1 required) | 2014-10-31 | 2015-07-31 |
| FERRITE-BEAD | Cisco FERRITE-BEAD | 2020-07-31 | 2020-10-30 |