Welcome to the Network Engineering Domain
Pape O. Fall's Blog
In Progress…
The goal of this post is to dive deep into vPC (Virtual Port Channel) which is a Cisco Nexus technology that allows links that are physically connected to two different switches to appear as a single logical Port-Channel to a downstream device. This eliminates Spanning Tree Protocol (STP) blocking, provides active-active link utilization, and offers [ Read More ]
This procedure details how to upgrade a Cisco Nexus switch using a USB drive and the install all method which performs pre-checks, image verification, install staging, and automatic reload for a clean, validated upgrade. Step 1: Insert USB & Verify File LEAF-101# dir usb1: 16384 Jan 22 11:31:24 2024 System Volume Information/ 2783026176 Feb 13 [ Read More ]
vPC Fabric Peering is a critical technique in VXLAN BGP EVPN environments for achieving seamless Layer 2 connectivity and Anycast Gateway functionality while maintaining control-plane and data-plane consistency. This blog post walks through the motivation behind vPC Fabric Peering, its architecture, and why it enables resilient and scalable data center fabric operations. Let me guide [ Read More ]
This is a comprehensive list of essential ACI troubleshooting commands for controllers, leaves, and spines. APIC Controller Troubleshooting Commands Leaf Troubleshooting Commands in Cisco ACI Spine Troubleshooting Commands in Cisco ACI Packet Tracing Commands in Cisco ACI Debug & Trigger Commands in Cisco ACI Conclusion Troubleshooting Cisco ACI can be complex, but having the right [ Read More ]
Each Meraki Go device features a multi-color LED indicator designed to offer users a quick and intuitive way to assess the device’s operational status. The placement of this LED varies depending on the specific model, and the color or behavior (solid, blinking, etc.) of the light reflects different states, such as power, connectivity, or error [ Read More ]
Cisco Meraki is a highly recognized name in the networking industry and has been a subsidiary of Cisco Systems since its acquisition in 2012. Over the years, Meraki has become a leader in cloud-managed networking solutions, offering a broad range of products that deliver simplicity, scalability, and powerful management features. While there are many cloud-based [ Read More ]
I ran into an issue today logging into UCS Manager where I received the following error: Login Error: java.io.IOException: Invalid Http response Login Error: java.io.IOException: Server returned HTTP response code: 400 for URL: http://10.x.x.x:443/nuova This is due to an interoperability issue with Java 7 Update 45 and the UCSM GUI. There are several methods to [ Read More ]
Hi, I'm Pape ! Folks call me Pop. I'm CCIE #48357. I love what I do and enjoy making tech easier to understand. I also love writing, so I’m sharing my blog with you
