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![Mastering IPv6 Routing: A Complete Guide with Labs, CLI & FAQs [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-IPv6-routing.jpg)
Mastering IPv6 Routing: A Complete Guide with Labs, CLI & FAQs [CCNP ENTERPRISE]
If you’re reading this, you’re either deep into the world of IPv6 already or you’re preparing to face it soon. IPv6 is no longer just a future plan—it’s the reality of today’s networks, especially with the exhaustion of IPv4. If you’ve ever wondered “How does […]
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![Your First Step into IPv6: Address Types, Labs, CLI & Real-World Use Cases [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-IPV6.jpg)
Your First Step into IPv6: Address Types, Labs, CLI & Real-World Use Cases [CCNP Enterprise]
When I started teaching networking years ago, IPv4 was king. Subnetting was everyone’s nightmare (and still is ). But over time, I noticed a shift. Devices kept growing, IP conflicts became more common, and NAT started showing its limits. That’s when IPv6 really started to […]
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![VPN 0 and VPN 512 in Cisco SD-WAN: Backbone & Management Explained [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/nj-blog-post-vpn0-vpn512.jpg)
VPN 0 and VPN 512 in Cisco SD-WAN: Backbone & Management Explained [CCNP ENTERPRISE]
Today diving deep into a very important, yet often misunderstood part of SD-WAN architecture — VPN 0 and VPN 512. When you start exploring Cisco SD-WAN (Viptela), you’ll quickly notice the use of different VPNs not just for end-user data, but for control, management, and […]
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![Performance Routing (PfR) Basics: Optimize Traffic Like a Pro [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/nj-blog-post-PFR.jpg)
Performance Routing (PfR) Basics: Optimize Traffic Like a Pro [CCNP ENTERPRISE]
Today’s article, we’ll dive into one of the most powerful yet underrated features in enterprise networks — Performance Routing (PfR). While traditional routing protocols like OSPF or BGP make decisions based on shortest path or metrics like cost, PfR goes beyond. It chooses the best […]
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![Hub-and-Spoke in Modern WANs: Still Relevant in 2025? [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/Slide1.jpg)
Hub-and-Spoke in Modern WANs: Still Relevant in 2025? [CCNP ENTERPRISE]
Today we’re going back to one of the core building blocks of WAN design — the Hub-and-Spoke topology. Even in today’s era of SD-WAN and cloud-first networks, the hub-and-spoke model remains relevant, especially for centralized security, legacy MPLS, and hybrid branch setups. Whether you’re starting […]
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![DIA vs Centralized Breakout: Which Internet Access Model Is Right for Your SD-WAN Network in 2025? [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/DIA-vs-Centralized-Breakout-Which-Internet-Access-Model-Is-Right-for-Your-SD-WAN-Network-in-2025_networkjourney.png)
DIA vs Centralized Breakout: Which Internet Access Model Is Right for Your SD-WAN Network in 2025? [CCNP ENTERPRISE]
If you’re currently designing or managing SD-WAN solutions, you’re probably facing one of the most critical architectural questions: Should you go with DIA (Direct Internet Access) or a Centralized Breakout model? Choosing the right internet access model can significantly impact your application performance, security posture, […]
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![IP SLA Configuration for Failover: Step-by-Step Guide with EVE-NG Lab & CLI [2025][CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/IP-SLA-Configuration-for-Failover_networkjourney.png)
IP SLA Configuration for Failover: Step-by-Step Guide with EVE-NG Lab & CLI [2025][CCNP ENTERPRISE]
Today I want to take you into one of the most practical tools you can add to your network reliability toolkit: IP SLA with tracking for failover. Back when I was setting up redundant internet links for my enterprise clients, we needed a way to […]
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![SD-WAN Transport Color Explained: Master Cisco SD-WAN Colors, Use Cases & CLI [2025 Guide] [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/SD-WAN-Transport-Color-Explained_-Master-Cisco-SD-WAN-Colors_-Use-Cases_CLI_networkjourney-1.png)
SD-WAN Transport Color Explained: Master Cisco SD-WAN Colors, Use Cases & CLI [2025 Guide] [CCNP ENTERPRISE]
Over the past few years, I’ve helped many enterprises migrate to Cisco SD-WA, and a recurring point of confusion has been around Transport Colors. If you’ve ever looked at a vEdge or cEdge configuration and wondered what “mpls”, “biz-internet” or “public-internet” actually mean—this blog is […]
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![SD-WAN vs Traditional WAN: Complete Comparison, CLI Lab & Real Use Cases 2025 Guide [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/SD-WAN-vs-Traditional-WAN_-Complete-Comparison_networkjourney.png)
SD-WAN vs Traditional WAN: Complete Comparison, CLI Lab & Real Use Cases 2025 Guide [CCNP ENTERPRISE]
Should you stay with Traditional WAN or move to SD-WAN? I’ve helped several clients in the past five years migrate their branch networks and data centers to Cisco SD-WAN, and I’ve seen both the technical challenges and amazing benefits it brings. If you’re still depending […]
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![Understanding DMVPN Phase 1, 2, and 3: A Practical Guide [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/Understanding-DMVPN-Phase_networkjourney.png)
Understanding DMVPN Phase 1, 2, and 3: A Practical Guide [CCNP ENTERPRISE]
I’m here to help you simplify one of the most important VPN technologies used in scalable WAN deployments — Dynamic Multipoint VPN (DMVPN). Whether you’re a network engineer working on real-world WAN rollouts or preparing for your next professional certification, this guide will equip you […]
