My Network Lab
Sharing my learning and personal experience in IT Networking.
Friday, August 1, 2025
Deleting a Cisco File Directory
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Some older Cisco switches have limited flash memory and would require deleting large files such as an IOS/IOS-XE .bin to free up space. S...
Friday, July 4, 2025
Cisco Nexus Switch SFP Validation Failed Error
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I had to configure a Cisco Nexus 5K switch to be a trunk port and encountered an SFP validation failed error. I've checked the port is u...
Friday, June 6, 2025
Cisco 1100 Router Flex Ports
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The Cisco 1100 has a a built-in 8-port Layer 2 switch and the last two ports can be converted into a Layer 3 port. This feature is called F...
Sunday, May 4, 2025
Cisco ASR1K Policing QoS Configuration
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Here's a Cisco link which compares the QoS strategies that can be applied in a Cisco router. The legacy ISR command rate-limit is no l...
Tuesday, April 1, 2025
Password Recovery in a Cisco ASR920
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You can use PuTTY to send a Special Command such as Break when entering ROMMON mode in a Cisco router. Just right-click on the top area ...
Saturday, March 1, 2025
Cisco Nexus 9000 NX-OS Upgrade
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The Cisco Nexus 9000 (N9K) switch upgrade procedure was simplified compared to upgrading an older Nexus platform. You can use the Cisco Ne...
Thursday, February 6, 2025
Juniper Root Password Recovery
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Here's a useful Juniper link in recovering the root password. I tried to login to my virtual MX device but couldn't access it, so I...
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