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Clock issue with Cisco ISR 4000K Series routers

Cisco has advised BT of an issue relating to a component manufactured by one of their suppliers that affects some Cisco Optical Networking, Routing, Security & Switching products. In some hardware units, the clock signal component degrades over time. Cisco expects product failures to increase over time, beginning after the unit has been in operation for approximately 18 months.

Can anyone advise how to spot the issue and what symptom to look for if the unit has suffered such a defect?
RoutersCiscoNetworking

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Svet Chinkov
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Svet Chinkov

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So, does Cisco change the entire unit or just a card?
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Svet Chinkov

I believe Cisco will replace the entire unit if it the device is covered by any active service contract or was covered by warranty prior of November 16, 2016 and any device shipped after that date is not affected by the bug.

Thank You
Networking
Networking

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

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