Articles
Field notes from real engagements — troubleshooting walkthroughs, root-cause breakdowns, and practical guidance for IT teams and small businesses.
Intermittent Slow HTTPS Uploads Behind Cisco FTD and Nexus vPC: Tracing It to the ISP Handoff
Large uploads were fast one try and 10x slower the next. How we cleared the Nexus vPC core with no outage and traced the fault to the ISP handoff.
FortiGate as a FortiSwitch and FortiAP Controller Behind a SonicWall: Design, Loops, and an 8.0.0 Bug
Run FortiGates as FortiSwitch and FortiAP controllers without routing traffic, fix the FortiLink spanning tree loop, and avoid the FortiOS 8.0.0 FortiLink bug.