SolarWinds Orion NPM: Configuring Cisco Hardware Health Pollers

While troubleshooting an issue with a 4506 switch recently, I discovered an interesting discrepancy: Orion was reporting a critical hardware issue on the switch, but the switch itself didn’t seem to have any idea that anything was wrong. The exact error I was seeing was that a supply voltage sensor for a fiber switchport interface …

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Wireshark Fundamentals – Setup and Configuration

Wireshark is an open-source tool which is used to perform packet capture and analysis for wired or wireless network traffic.  It can be intimidating to look at the first time you open a packet capture file (or pcap).  Hopefully this introduction will help smooth the sharp edges on learning this tool. I was first introduced …

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Setting Up GNS3, Part I: Initial Configuration

When I began looking at the world of Cisco certifications, I was overwhelmed by the sheer amount of material there was to learn.  Sure, I went at the CCENT with a baseline knowledge of networking gained from the CompTIA Network+ (and some associated concepts from the Security+), but not everything on the exam is listed …

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