Field Notice: FN74287 - New Memory Component Introduction in Cisco Network Convergence System 560 Routers May Cause Multiple Reloads with Cisco IOS XR Releases Earlier Than 7.6.1 - Software Upgrade Recommended
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Notice
THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.
Products Affected
| Affected Product Name | Description | Comments |
|---|---|---|
| N560-4 | N560 4RU Chassis HW with RSP4 | |
| N560-4-CC | N560 4RU CC Chassis HW with RSP4 | |
| N560-4-E | NCS 560 4RU Chassis HW with RSP4-E, PSU options and FAN | |
| N560-4-E-CC | NCS 560 4RU CC Chassis HW with RSP4-E, PSU options and FAN | |
| N560-4-RSP4 | NCS 560 Series Router 4RU Route Switch Processor 4, 800G | |
| N560-4-RSP4E | NCS 560 Series Router 4RU Route Switch Processor 4E, 800G | |
| N560-4-SYS | N560 4RU HW. Flex. Consumption for RSP4. Smart Licensing | |
| N560-4-SYS-E | N560 4RU HW. Flex. Consumption for RSP4-E. Smart Licensing | |
| N560-7 | N560 7RU Chassis HW with RSP4 | |
| N560-7-E | NCS 560 7RU Chassis HW with RSP4-E, PSU options and FAN | |
| N560-7-SYS | N560 7RU HW. Flex. Consumption for RSP4. Smart Licensing | |
| N560-7-SYS-E | N560 7RU HW. Flex. Consumption for RSP4-E. Smart Licensing | |
| N560-7-SYS-E-V | N560 7RU HW. for RSP4-E. ATO for Volume based discounting | |
| N560-7-SYS-V | N560 7RU HW. for RSP4. ATO for Volume based discounting | |
| N560-RSP4 | NCS 560 Route Switch Processor 4 - L scale, 800G | |
| N560-RSP4-E | NCS 560 Route Switch Processor 4 Enhanced- XL scale, 800G |
Defect Information
| Defect ID | Headline |
| CSCwb51659 | [ncs560] Umbrella SMU for ncs560 DDR4 8GB support |
Problem Description
Cisco is introducing a new Double Data Rate 4 (DDR4) 8Gb memory component in Cisco Network Convergence System (NCS) 560 Series Routers. Cisco IOS XR releases 7.6.1 and later are compatible with the component. However, routers that have the new memory components that are running Cisco IOS XR releases earlier than Release 7.6.1 may exhibit performance degradation or multiple reloads.
Background
The current memory component in Cisco NCS 560 Series Routers has reached end of life. A new DDR4 component is being introduced to support the product.
Problem Symptom
Cisco NCS 560 Series Routers that have the new memory component installed in systems that are running a Cisco IOS XR release earlier than Release 7.6.1 may exhibit ASIC initialization failure in the console, resulting in multiple reloads. Because Cisco IOS XR releases earlier than Release 7.6.1 will not load, the device may stop working.
During unexpected reloads, the following failure signature may be seen:
RP/0/RP0/CPU0:MM DD DDD:MMM:SSS UTC: fia_driver[220]: %FABRIC-FIA_DRVR-3-ASIC_INIT_FAILURE : [6537] : Asic Initialization failed due to:soc reset init failed, device 0 with error 0xffffffff(Internal error)
RP/0/RP0/CPU0:MM DD DDD:MMM:SSS UTC: fia_driver[220]: %FABRIC-FIA_DRVR-3-VM_RELOAD : VM has to be reloaded because of the reason :Board reload due to asic initialization failure
Workaround/Solution
The router hardware version can be determined by following the instructions provided in the How to Identify Affected Products section of this field notice.
For backward compatibility, Cisco highly recommends installing the SMU on the software releases as shown in the following table or upgrading to Cisco IOS XR Release 7.6.1 or later by September 15, 2025. The new hardware version of Cisco NCS 560 Series Routers 3 or later is expected to ship from manufacturing after September 15, 2025.
The new hardware version of Cisco NCS 560 Series Routers is compatible with Cisco IOS XR Release 7.6.1 and later. No action is required for routers that are already deployed with Cisco IOS XR Release 7.6.1 or later.
| Cisco IOS XR Release | SMU type | SMU Download instructions for all releases |
|---|---|---|
| 7.1.2 | Reload |
|
| 7.2.1 | Reload | |
| 7.2.2 | Reload | |
| 7.3.2 | Reload | |
| 7.4.2 | Reload | |
| 7.5.2 | Reload |
Cisco does not recommend a Return Material Authorization (RMA) for the issue described in this field notice. The routers will resume normal operation with the solution provided in this section of this field notice.
How to Identify Affected Products
The new Cisco NCS 560 Router hardware version can be determined by using the show diag details command. The line for Hardware Revision will show an output of 3.0 or later.
The following is an example of the command and its output:
RP/0/RP0/CPU0#show diag details
0/RP0-MB-IDPROM - Cisco NCS 560 Route Switch Processor 4 - 800G, L Scale
Info
Controller Type : 109d
Hardware Revision : 3.0
PCA Number : 73-19438-05
PCA Revision : C0
Deviation Number # 1 : 0
Fab Revision : 03
PCB Serial Number : FOC270XXXX
Revision History
| Version | Description | Section | Date |
| 1.0 | Initial Release | — | 2025-SEP-02 |
For More Information
For further assistance or for more information about this field notice, contact the Cisco Technical Assistance Center (TAC) using one of the following methods:
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