Field Notice: FN64231 - NCS5500 Line Cards Might Fail After 18 Months or Longer Due to Clock Signal Component Failure - Replace on Failure
Available Languages
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 |
|---|---|---|
| NC55-18H18F | NCS 5500 18X100G and 18X40G Base Line Card | |
| NC55-18H18F-BA | NCS 5500 18X100G and 18X40G Base | |
| NC55-18H18F-BA= | NCS 5500 18X100G and 18X40G Base Spare | |
| NC55-18H18F= | NCS 5500 18x100G and 18x40G Base Line Card | |
| NC55-24H12F-SB | NCS 5500 24X100G and 12X40G Scale | |
| NC55-24H12F-SB= | NCS 5500 24X100G and 12X40G Scale Spare | |
| NC55-24H12F-SE | NCS 5500 24X100G and 12X40G Scale Line Card | |
| NC55-24H12F-SE= | NCS 5500 24X100G and 12X40GE Scale Line Card | |
| NC55-24X100G-SB | NCS 5500 24x100G Scale | |
| NC55-24X100G-SB= | NCS 5500 24x100G Scale Spare | |
| NC55-24X100G-SE | NCS 5500 24x100G Scale Line Card | |
| NC55-24X100G-SE= | NCS 5500 24x100G Scale Line Card | |
| NC55-36X100G | ^^NCS 5500 36x100G Base Line Card | |
| NC55-36X100G-BA | ^NCS 5500 36x100G Base | |
| NC55-36X100G-BA= | ^NCS 5500 36x100G Base Spare | |
| NC55-36X100G= | ^^NCS 5500 36x100G Base Line Card |
Defect Information
| Defect ID | Headline |
| CSCvf34445 | There were no defects filed with this field notice at the time of publication. |
Problem Description
The Network Convergence System 5500 Series (NCS5500) products listed in the Products Affected section might fail after 18 months or longer in operation due to a clock signal component failure.
Background
A clock signal component manufactured by one supplier, and included in some Cisco products, has been seen to degrade over time in some units.
Although the Cisco products with these components are currently performing normally, we expect product failures to increase over the years, beginning after the unit has been in operation for approximately 18 months.
Once the component has failed, the system will stop functioning, will not boot, and is not recoverable.
These clock signal components are used by other companies and are included in a number of Cisco products.
Problem Symptom
The product will no longer function and, subsequently, the line card fails to boot.
Workaround/Solution
Customers with affected products (refer to the 'How to Identify Affected Products' section) should contact the Technical Assistance Center (TAC) to request a replacement unit. To open a Cisco Technical Assistance Case (TAC), you must have a valid support contract or a product that is under warranty.
How to Identify Affected Products
In order to verify if your product is affected by this issue, examine the Version ID (VID) number. Also, you could enter the show inventory command into the CLI in order to obtain the VID of the working module.
Any unit with a VID number equal to or earlier than the "Possibly Affected VID" are possibly affected.
Any devices with a VID number equal to or later than the "Fixed VID" are not affected and will not be replaced.
Any unit with a VID number equal to or earlier than the "Possibly Affected VID" are possibly affected.
Note: Some of the V01 or V02 line cards shipped after December 6, 2016 are not affected by the issue addressed in this Field Notice.
| Affected PID | Replacement PID | Possibly Affected VID | Fixed VID |
|---|---|---|---|
| NC55-18H18F | NC55-18H18F | V01 | V02 |
| NC55-18H18F= | NC55-18H18F= | V01 | V02 |
| NC55-18H18F-BA | NC55-18H18F-BA | V01 | V02 |
| NC55-18H18F-BA= | NC55-18H18F-BA= | V01 | V02 |
| NC55-24H12F-SE | NC55-24H12F-SE | V01 | V02 |
| NC55-24H12F-SE= | NC55-24H12F-SE= | V01 | V02 |
| NC55-24H12F-SB | NC55-24H12F-SB | V01 | V02 |
| NC55-24H12F-SB= | NC55-24H12F-SB= | V01 | V02 |
| NC55-24X100G-SE | NC55-24X100G-SE | V01 | V02 |
| NC55-24X100G-SE= | NC55-24X100G-SE= | V01 | V02 |
| NC55-24X100G-SB | NC55-24X100G-SB | V01 | V02 |
| NC55-24X100G-SB= | NC55-24X100G-SB= | V01 | V02 |
| NC55-36X100G | NC55-36X100G | V01, V02 | V03 |
| NC55-36X100G= | NC55-36X100G= | V01, V02 | V03 |
| NC55-36X100G-BA | NC55-36X100G-BA | V01, V02 | V03 |
| NC55-36X100G-BA= | NC55-36X100G-BA= | V01, V02 | V03 |
Physical Location of the VID Label on the Affected PIDs
CLI
Enter the show inventory command in order to view the VID of the line cards. The output appears in this format:
Revision History
| Version | Description | Section | Date |
| 10.4 | Updated the solution. | Workaround/Solution | 2025-MAY-06 |
| 10.3 | Updated the Background and Workaround/Solution Sections | — | 2019-OCT-17 |
| 10.2 | Updated the Background and Workaround/Solution Sections | — | 2019-AUG-21 |
| 10.1 | Fixed Broken Image Links | — | 2019-FEB-26 |
| 10.0 | Migration to new field notice system | — | 2017-OCT-13 |
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:
Receive Email Notification About New Field Notices
To receive email updates about Field Notices (reliability and safety issues), Security Advisories (network security issues), and end-of-life announcements for specific Cisco products, set up a profile in My Notifications.
Feedback
Unleash the Power of TAC's Virtual Assistance