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![Ticket#6 - DHCP Not Working on Access Layer – Troubleshoot Snooping and Relay [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-Ticket-6.jpg)
Problem Summary In a mid-sized enterprise campus network, multiple users reported they were unable to get IP addresses from the DHCP server. The issue was isolated to specific access switches connected to VLAN 30. The DHCP server was reachable via Layer 3 on a core […]
![Two-Tier vs Three-Tier Network Architecture – Complete Guide with EVE-NG Lab & CLI [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/06/Two-Tier-vs-Three-Tier-Network-Architecture_networkjourney-1.png)
In this post, I’ll break down Two-Tier and Three-Tier Network Architecture in simple terms, just like I do in my instructor-led classes. By the end, you’ll not only understand these models but also see how to configure and simulate them using EVE-NG. In enterprise network […]
