Field Notices
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Cisco 4461 Integrated Services Router
- Field Notice: FN74146 - Limited Number of Cisco Catalyst Routers Can Experience Memory Failures - Hardware Upgrade Available 02/Oct/2024
- Field Notice: FN72510 - Cisco IOS XE Software: Weak Cryptographic Algorithms Are Not Allowed by Default for IPsec Configuration in Certain Cisco IOS XE Software Releases - Configuration Change Recommended 10/Jan/2024
- Field Notice: FN72323 - Cisco IOS XE Software: QuoVadis Root CA 2 Decommission Might Affect Smart Licensing, Smart Call Home, and Other Functionality - Software Upgrade Recommended 05/Oct/2023
- Field Notice: FN72578 - Cisco IOS XE - Smart Licensing Using Policy Might Cause High CPU/Memory Usage - Software Upgrade Recommended 29/Sep/2023
- Field Notice: FN - 72265 - Expired PKI Certificate on vEdge, ISR, and ASR Routers Causes SD-WAN Umbrella DNS Connections to Fail - Software Upgrade Recommended 23/Nov/2021
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Cisco 4451-X Integrated Services Router
- Field Notice: FN74146 - Limited Number of Cisco Catalyst Routers Can Experience Memory Failures - Hardware Upgrade Available 02/Oct/2024
- Field Notice: FN72510 - Cisco IOS XE Software: Weak Cryptographic Algorithms Are Not Allowed by Default for IPsec Configuration in Certain Cisco IOS XE Software Releases - Configuration Change Recommended 10/Jan/2024
- Field Notice: FN72323 - Cisco IOS XE Software: QuoVadis Root CA 2 Decommission Might Affect Smart Licensing, Smart Call Home, and Other Functionality - Software Upgrade Recommended 05/Oct/2023
- Field Notice: FN72578 - Cisco IOS XE - Smart Licensing Using Policy Might Cause High CPU/Memory Usage - Software Upgrade Recommended 29/Sep/2023
- Field Notice: FN - 72265 - Expired PKI Certificate on vEdge, ISR, and ASR Routers Causes SD-WAN Umbrella DNS Connections to Fail - Software Upgrade Recommended 23/Nov/2021
- Field Notice: FN - 64153 - ASR1000 - Inaccurate Power Supply Unit Status - Software Upgrade Recommended 27/May/2020
- Field Notice: FN - 63938 - ISR4451X/K9 & ISR4431/K9 - Silent "PowerON" Reload - CPLD Update Required - Software Upgrade Recommended 26/Oct/2017
- Field Notice: FN - 64190 - Cisco IOS XE - Show commands on Cisco IOS XE based platforms might not report true platform memory usage - Software Upgrade Recommended 07/Oct/2016
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Cisco 4431 Integrated Services Router
- Field Notice: FN74118 - Some PWR-CC1-500WAC Power Supplies May Show Incorrect Power Readings in Cisco IOS XE Software, Resulting in Incorrect Fan Speed Control - Hardware Upgrade Available 01/May/2024
- Field Notice: FN72510 - Cisco IOS XE Software: Weak Cryptographic Algorithms Are Not Allowed by Default for IPsec Configuration in Certain Cisco IOS XE Software Releases - Configuration Change Recommended 10/Jan/2024
- Field Notice: FN72323 - Cisco IOS XE Software: QuoVadis Root CA 2 Decommission Might Affect Smart Licensing, Smart Call Home, and Other Functionality - Software Upgrade Recommended 05/Oct/2023
- Field Notice: FN72578 - Cisco IOS XE - Smart Licensing Using Policy Might Cause High CPU/Memory Usage - Software Upgrade Recommended 29/Sep/2023
- Field Notice: FN - 72265 - Expired PKI Certificate on vEdge, ISR, and ASR Routers Causes SD-WAN Umbrella DNS Connections to Fail - Software Upgrade Recommended 23/Nov/2021
- Field Notice: FN - 64153 - ASR1000 - Inaccurate Power Supply Unit Status - Software Upgrade Recommended 27/May/2020
- Field Notice: FN - 64190 - Cisco IOS XE - Show commands on Cisco IOS XE based platforms might not report true platform memory usage - Software Upgrade Recommended 07/Oct/2016
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Cisco 4351 Integrated Services Router
- Field Notice: FN72510 - Cisco IOS XE Software: Weak Cryptographic Algorithms Are Not Allowed by Default for IPsec Configuration in Certain Cisco IOS XE Software Releases - Configuration Change Recommended 10/Jan/2024
- Field Notice: FN72323 - Cisco IOS XE Software: QuoVadis Root CA 2 Decommission Might Affect Smart Licensing, Smart Call Home, and Other Functionality - Software Upgrade Recommended 05/Oct/2023
- Field Notice: FN72578 - Cisco IOS XE - Smart Licensing Using Policy Might Cause High CPU/Memory Usage - Software Upgrade Recommended 29/Sep/2023
- Field Notice: FN - 72265 - Expired PKI Certificate on vEdge, ISR, and ASR Routers Causes SD-WAN Umbrella DNS Connections to Fail - Software Upgrade Recommended 23/Nov/2021
- Field Notice: FN - 64153 - ASR1000 - Inaccurate Power Supply Unit Status - Software Upgrade Recommended 27/May/2020
- Field Notice: FN - 64253 - ISR4331, ISR4321, ISR4351 and UCS-E120 Might Fail After 18 Months or Longer Due to Clock Signal Component Failure - Replace on Failure 17/Oct/2019
- Field Notice: FN - 63938 - ISR4451X/K9 & ISR4431/K9 - Silent "PowerON" Reload - CPLD Update Required - Software Upgrade Recommended 26/Oct/2017
- Field Notice: FN - 64190 - Cisco IOS XE - Show commands on Cisco IOS XE based platforms might not report true platform memory usage - Software Upgrade Recommended 07/Oct/2016
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Cisco 4331 Integrated Services Router
- Field Notice: FN72510 - Cisco IOS XE Software: Weak Cryptographic Algorithms Are Not Allowed by Default for IPsec Configuration in Certain Cisco IOS XE Software Releases - Configuration Change Recommended 10/Jan/2024
- Field Notice: FN72323 - Cisco IOS XE Software: QuoVadis Root CA 2 Decommission Might Affect Smart Licensing, Smart Call Home, and Other Functionality - Software Upgrade Recommended 05/Oct/2023
- Field Notice: FN72578 - Cisco IOS XE - Smart Licensing Using Policy Might Cause High CPU/Memory Usage - Software Upgrade Recommended 29/Sep/2023
- Field Notice: FN - 72265 - Expired PKI Certificate on vEdge, ISR, and ASR Routers Causes SD-WAN Umbrella DNS Connections to Fail - Software Upgrade Recommended 23/Nov/2021
- Field Notice: FN - 70573 - Cisco Secure Unique Device Identifier Certificate Expiration Impact On Internet of Things Products Managed by Cisco Field Network Director - Workaround Provided 16/Oct/2020
- Field Notice: FN - 64153 - ASR1000 - Inaccurate Power Supply Unit Status - Software Upgrade Recommended 27/May/2020
- Field Notice: FN - 64253 - ISR4331, ISR4321, ISR4351 and UCS-E120 Might Fail After 18 Months or Longer Due to Clock Signal Component Failure - Replace on Failure 17/Oct/2019
- Field Notice: FN - 63938 - ISR4451X/K9 & ISR4431/K9 - Silent "PowerON" Reload - CPLD Update Required - Software Upgrade Recommended 26/Oct/2017
- Field Notice: FN - 64190 - Cisco IOS XE - Show commands on Cisco IOS XE based platforms might not report true platform memory usage - Software Upgrade Recommended 07/Oct/2016
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Cisco 4321 Integrated Services Router
- Field Notice: FN74073 - Some Cisco PWR4320 Power Supply Units May Experience Component Failure - Hardware Upgrade Available 15/May/2024
- Field Notice: FN72510 - Cisco IOS XE Software: Weak Cryptographic Algorithms Are Not Allowed by Default for IPsec Configuration in Certain Cisco IOS XE Software Releases - Configuration Change Recommended 10/Jan/2024
- Field Notice: FN72323 - Cisco IOS XE Software: QuoVadis Root CA 2 Decommission Might Affect Smart Licensing, Smart Call Home, and Other Functionality - Software Upgrade Recommended 05/Oct/2023
- Field Notice: FN72578 - Cisco IOS XE - Smart Licensing Using Policy Might Cause High CPU/Memory Usage - Software Upgrade Recommended 29/Sep/2023
- Field Notice: FN - 72265 - Expired PKI Certificate on vEdge, ISR, and ASR Routers Causes SD-WAN Umbrella DNS Connections to Fail - Software Upgrade Recommended 23/Nov/2021
- Field Notice: FN - 64153 - ASR1000 - Inaccurate Power Supply Unit Status - Software Upgrade Recommended 27/May/2020
- Field Notice: FN - 64253 - ISR4331, ISR4321, ISR4351 and UCS-E120 Might Fail After 18 Months or Longer Due to Clock Signal Component Failure - Replace on Failure 17/Oct/2019
- Field Notice: FN - 64190 - Cisco IOS XE - Show commands on Cisco IOS XE based platforms might not report true platform memory usage - Software Upgrade Recommended 07/Oct/2016
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Cisco 4221 Integrated Services Router
- Field Notice: FN72510 - Cisco IOS XE Software: Weak Cryptographic Algorithms Are Not Allowed by Default for IPsec Configuration in Certain Cisco IOS XE Software Releases - Configuration Change Recommended 10/Jan/2024
- Field Notice: FN72323 - Cisco IOS XE Software: QuoVadis Root CA 2 Decommission Might Affect Smart Licensing, Smart Call Home, and Other Functionality - Software Upgrade Recommended 05/Oct/2023
- Field Notice: FN72578 - Cisco IOS XE - Smart Licensing Using Policy Might Cause High CPU/Memory Usage - Software Upgrade Recommended 29/Sep/2023
- Field Notice: FN - 72265 - Expired PKI Certificate on vEdge, ISR, and ASR Routers Causes SD-WAN Umbrella DNS Connections to Fail - Software Upgrade Recommended 23/Nov/2021
Support Documentation
Security Notices