My Network Lab

Sharing my learning and personal experience in IT Networking.

Saturday, April 1, 2023

Cisco 3850 Switch IOS-XE Downgrade 16.x to 3.x

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Here's a link where you can find all Cisco Visio stencils/icons. You can downgrade a Cisco 3850 or 3650 Catalyst switch from IOS-XE 16....
Thursday, March 2, 2023

Cisco Catalyst 9300 IOS-XE Upgrade

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My family and I spent our Christmas holiday last year in Bohol , Philippines. The people there were very warm and hospitable. We visited sev...
Thursday, February 2, 2023

Renumber a Cisco Catalyst 3650 Switch Stack

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Here's a link to manually change or renumber a Cisco Catalyst 3650 stack number. This also applies to a Cisco Catalyst 3850 since it ha...
Sunday, January 1, 2023

Cisco NCS 540 show tech-support

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The Cisco NCS 540 router show tech-support command generates a TAR archive file (.tgz) and saves a copy in harddisk. You can transfer this ...
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John Lloyd Lagura
I'm John Lloyd Lagura, a passionate Network Engineer, tech blogger and a lifelong learner. I specialize in routing, switching, security, wireless and cloud technologies. I currently hold CompTIA Network+, Security+, ITIL Foundation, Cisco CCNP Security, CCNP Enterprise, CCNA Cyber Ops, Juniper JNCIA-Junos, JNCIA-SEC, JNCIA-Design, Fortinet Network Security Professional (NSE4).
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