N10-009 Videos

Some commands are the same across multiple devices. In this video, you’ll learn about show route, show interface, show config, and other common device commands. << Previous: Hardware Tools Next Video: Network+ Main Index >>

A good toolbag contains many different hardware tools. In this video, you’ll learn about tone generators, cable testers, taps, port mirror, wi-fi analyzers, and more. << Previous: Command Line Tools Next Video: Basic Network Device Commands >>

All of the detailed troubleshooting tools are at the command line. In this video, you’ll learn about ping, traceroute, nslookup, dig, tcpdump, netstat, and more. << Previous: Software Tools Next Video: Hardware Tools >>

Most network administrators have many tools at their disposal. In this video, you’ll learn about protocol analyzers, port scanners, device discovery, and speed test sites. << Previous: Wireless Issues Next Video: Command Line Tools >>

It’s difficult to troubleshooting something you can’t see. In this video, you’ll learn how to resolve wireless interference, manage channel usage, resolve roaming misconfigurations, and more. << Previous: Performance Issues Next Video: Software Tools >>

There’s never enough bandwidth. In this video, you’ll learn how to troubleshoot congestion, bottlenecks, latency, packet loss, and jitter. << Previous: Routing and IP Issues Next Video: Wireless Issues >>

Configuring a router incorrectly can cause a number of network issues. In this video, you’ll learn about routing tables, the gateway of last resort, address pool exhaustion, and troubleshooting duplicate IP addresses. << Previous: Switching Issues Next Video: Performance Issues >>

An incorrectly configured switch can be a critical error. In this video, you’ll learn about stopping switching loops with spanning tree protocol, managing VLAN assignments, and best practices for configuring access control lists. << Previous: Hardware Issues Next Video: Routing and IP Issues >>

A single hardware issue can cause signficant problems on a production network. In this video, you’ll learn about PoE standards, transceiver mismatches, and how to calculate transceiver signal strength. << Previous: Interface Issues Next Video: Switching Issues >>

A network interface can tell a lot about the health of the network. In this video, you’ll learn about interface monitoring, CRC errors, runts, giants, drops, error disabled states, and port status messages. << Previous: Cable Issues Next Video: Hardware Issues >>