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

Tuesday, 23 September 2025

MD5 to SHA/AES Migration

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1. Why Replace MD5? - MD5 is vulnerable to collision attacks, allowing attackers to generate the same hash with different inputs. - It i...
Sunday, 7 September 2025

Rogue Endpoint Detection in Cisco ACI

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  🔐  Rogue Endpoint Detection in Cisco ACI ⚠️  Problem Addressed Rogue endpoints or misconfigured devices can cause  frequent MAC/IP mo...

Cisco ACI Mis-Cabling Protocol (MCP) – Loop Detection Simplified

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Cisco ACI uses  Mis-Cabling Protocol (MCP)  to detect and mitigate  Layer 2 loops , replacing traditional STP participation. MCP sends speci...
Saturday, 6 September 2025

Cisco ACI, Storm Control : Drop and Shutdown

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 In  Cisco ACI ,  Storm Control  is a feature used to mitigate traffic storms caused by excessive broadcast, multicast, or unknown unicast t...
Sunday, 31 August 2025

Cisco ACI Port Security

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   Cisco ACI Port Security – Summary Purpose : Controls the number of MAC addresses that can be learned on an interface to prevent unauth...
Saturday, 30 August 2025

Cisco ACI - Fabric Secure Mode Overview

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  Fabric Secure Mode Overview Fabric Secure Mode is a security feature in Cisco ACI that safeguards the infrastructure from unauthorized a...

Cisco ACI - Node Stateful Vs Stateless reload

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  Aspect Stateful Reload Stateless Reload Definition Reload where process sta...
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