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VPNv4 is a knowledge-driven platform dedicated to addressing the most unique, undocumented, and often unsolved challenges in the networking industry. Our mission is to bridge the critical gap between real-world network engineering problems and the lack of available solutions—especially those that even leading vendors like Cisco may not have officially published or documented.
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About VPNv4
VPNv4 is a knowledge-driven platform dedicated to addressing the most unique, undocumented, and often unsolved challenges in the networking industry. Our mission is to bridge the critical gap between real-world network engineering problems and the lack of available solutions—especially those that even leading vendors like Cisco may not have officially published or documented.
In today’s complex enterprise environments, network engineers and architects frequently encounter edge-case scenarios where conventional troubleshooting guides fall short. That’s where VPNv4 comes in. We focus on capturing these rare, real-life case studies—whether it’s a peculiar SD-WAN behavior, a multicast anomaly, or an unexpected interaction in Cisco SDA—and provide detailed, experience-based solutions that are practical, tested, and ready for deployment.
Latest Blogs
The Power of CLI Add-On Features: Simplifying Multi-Line Commands
The Challenge CLI add-on templates are incredibly useful and can be powerful when used effectively. However, one common challenge we encounter during deployments is handling multi-line commands tied to a single variable. Consider a CLI template structured like this: VMware Host Specs: crypto engine compliance shield disable service internal {{command_1}} {{command_2}} {{command_3}} Each command variable…
Cisco SD-WAN ZTP AUTO-IP NO DHCP
Zero Touch Provisioning Challenge: In many situations the service provider PE router may not be configured with DHCP services, in other words the customer’s vEdge would require the admin to statically set the WAN IP address for VPN0 . we’d still like to get ZTP to work provided: PE/GW has reachability to ztp.viptela.com PE/GW can…
DNA Center ESXI Installation Guide
Before you begin: As of Feb/02/2019 DNA center Esxi is not supported by Cisco. This most likely due to the hardware requirements when it comes to CPU/RAM & SSD Storage. That being this document is meant for training and lab purposes, obviously this is not something you’d want to run in production. VMware Host Specs:…
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