Eve-Ng
lab-guides2026-08-20
VLANs + Inter-VLAN Routing on IOS
Trunk, SVI, and the native VLAN gotcha that breaks pings.
lab-guides2026-08-10
OSPF Single-Area Lab
Three-router OSPF, loopbacks, and passive-interface hygiene.
lab-guides2026-07-15
OT Segmentation: Purdue Levels on a Budget
VLAN + firewall rules to isolate a fake PLC/HMI from corp LAB.