Networklearner

I am a network professional with over 18 years of experience in enterprise and data‑center networking. I am a CCIE Data Center certified engineer with strong hands‑on expertise in Cisco Nexus and Cisco ACI design, deployment, troubleshooting, and operations. I work on production ACI fabrics and am available for Cisco ACI and Nexus freelancing or consulting work. Contact: rockingoa@gmail.com

Showing posts with label Data Center Networking. Show all posts
Showing posts with label Data Center Networking. Show all posts
Tuesday, 28 April 2026

Leaf Node ID Swap in Cisco ACI: Risks, Precautions, and Steps

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Cisco ACI Leaf Node ID Swap Steps When Leaves Are Part of vPC Step 0 – Preconditions Confirm maintenance window is approved. Ensure alternat...
Sunday, 26 April 2026

Cisco ACI “Unknown” Leaf State Explained: Certificates, LLDP, Software, and Hardware Issues

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   In a Cisco ACI fabric, one of the most frustrating issues during initial fabric bring‑up, expansion, or node replacement is seeing a leaf...

Cisco ACI L3Out Interview Questions Explained – Design, Implement, and Troubleshooting

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   Section 1: Basic Cisco ACI L3Out Interview Questions 1. What is L3Out in Cisco ACI? L3Out (Layer‑3 Outside) is the ACI construct that pro...

Cisco ACI Interview Questions and Answers (ESG, Multi‑Site, NDO, MoQuery Explained)

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Cisco Application Centric Infrastructure (ACI) is a cornerstone technology in modern enterprise data centers. As a result, Cisco ACI intervi...
Sunday, 15 March 2026

Cisco ACI MoQuery – Advanced Commands for Day‑to‑Day Operations

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Cisco ACI provides a powerful graphical interface through APIC, but experienced ACI engineers rarely rely only on the GUI during daily opera...
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