Restoring Cisco N9K-X97160YC-EX Router to Factory Defaults: Step-by-Step Guide

Jun 12 , 2025 5

Restoring Cisco N9K-X97160YC-EX Router to Factory Defaults: Step-by-Step Guide

Cisco routers are the backbone of modern networks, but even the most reliable devices may require a reset. Whether troubleshooting glitches or preparing a device for resale, restoring factory settings is a critical skill. Here’s a concise, practical guide to resetting Cisco routers while avoiding common pitfalls.

Method 1: Using the config-register Command

1. Access the Router: Connect via SSH/Telnet or console cable.

2. Enter Configuration Mode:

   Router# configure terminal  
   Router(config)# config-register 0x2102  
   Router(config)# end

   This command ensures the router ignores the current startup configuration on reboot.

3. Erase Configuration:

   Router# write erase

   Deletes the startup configuration file.

4. Reload the Router:

   Router# reload

   Confirm the reload and do not save changes when prompted.

5. Reset Configuration Register:
   After rebooting, re-enter 0x2102 to restore normal operation:

   Router(config)# config-register 0x2102

Method 2: Manual Configuration Reset

1. Boot into ROMMON Mode:
   Power-cycle the router and press Break during startup.

2. Set Configuration Register:

   rommon 1 > confreg 0x2142  
   rommon 2 > reset

   Ignores existing configurations on next boot.

3. Reboot and Reconfigure:
   Follow the initial setup wizard to establish new credentials and settings.

Key Considerations

• Backup First: Always save critical configurations before resetting.

• Licensing Impact: Factory resets may revoke software licenses; contact Cisco support if needed.

• Security: Resetting removes all access controls—ensure physical security during the process.

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Need genuine Cisco parts or expert guidance? Linknewnet offers:
✅ Competitive Pricing: Up to 40% off on refurbished Cisco routers.
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Visit www.linknewnet.com or email cs@linknewnet.com for tailored solutions.

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