Episode 171: Network Discovery and Performance Monitoring

Episode 171: Network Discovery and Performance Monitoring

Network visibility starts with knowing what’s on your network. In this episode, we explain network discovery techniques using tools like ping sweeps, SNMP queries, and Nmap scans to identify devices, operating systems, and open services. You’ll learn how to distinguish active vs. passive discovery methods, the importance of using up-to-date inventories, and how to prevent disruptions while scanning.

We also cover real-time performance monitoring, including metrics like CPU, memory, interface utilization, and error counters. Tools like SNMP, NetFlow, and custom dashboards help you detect performance degradation before users report it. Combined, discovery and monitoring give you a comprehensive view of your environment, helping you diagnose problems and plan for future growth.

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Episoder(185)

Welcome to the CompTIA Network+ Certification Audio Course

Welcome to the CompTIA Network+ Certification Audio Course

14 Okt 20252min

Episode 184: Network Troubleshooting Methodology Recap and Exam Readiness

Episode 184: Network Troubleshooting Methodology Recap and Exam Readiness

To wrap up the series, this episode reviews the full troubleshooting methodology—from identifying the problem to documenting the fix. We walk through common scenarios, showing how the steps apply in r...

20 Jul 202513min

Episode 183: BYOD, Licensing Issues, and Troubleshooting Oddities

Episode 183: BYOD, Licensing Issues, and Troubleshooting Oddities

Not every issue fits into neat categories. In this episode, we address edge-case problems like Bring Your Own Device (BYOD) compatibility, expired licenses on security appliances, and odd client behav...

20 Jul 202518min

Episode 182: Optical, Hardware, and Performance Issues — Identifying and Resolving Problems

Episode 182: Optical, Hardware, and Performance Issues — Identifying and Resolving Problems

This episode revisits advanced troubleshooting at the hardware and optical layer. We cover transceiver problems, dirty fiber connectors, power mismatches, and switch backplane limitations. You'll lear...

20 Jul 202514min

Episode 181: DNS and NTP Failures — Troubleshooting Name and Time Resolution

Episode 181: DNS and NTP Failures — Troubleshooting Name and Time Resolution

DNS and NTP are often invisible—until they fail. This episode shows how to diagnose and fix issues with domain name resolution and time synchronization, both of which affect authentication, connectivi...

20 Jul 202515min

Episode 180: Asymmetric Routing, Multicast Flooding, and ACL Misconfigurations

Episode 180: Asymmetric Routing, Multicast Flooding, and ACL Misconfigurations

Some network issues are subtle, involving advanced concepts like asymmetric routing, multicast flooding, and access control list (ACL) errors. This episode explains how asymmetric routing—where traffi...

20 Jul 202514min

Episode 179: Collision Domains, Broadcast Storms, and Routing Loops

Episode 179: Collision Domains, Broadcast Storms, and Routing Loops

Poor network segmentation can lead to serious Layer 2 and Layer 3 problems. In this episode, we explain how excessive collision domains on legacy hubs or poorly configured switches can slow performanc...

20 Jul 202514min

Episode 178: Routing Troubleshooting — Missing Routes, DHCP, and Address Conflicts

Episode 178: Routing Troubleshooting — Missing Routes, DHCP, and Address Conflicts

Routing issues can silently break connectivity—even if everything looks fine at Layer 2. In this episode, we diagnose common routing problems, including missing default routes, misconfigured static ro...

20 Jul 202514min

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