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 >> In your first job working with networks, you’ll probably work with one of the major providers of network equipment. And […]

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 >> As a network administrator, you’ll be working with a lot of cables. There may be hundreds of cables

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 >> One of the most common utilities you’ll use at the command line is the ping command. The ping command tells you

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 >> Every network administrator will eventually be faced with a problem that says the network is slow. In actuality, the network

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 >> On a wireless network, there are only so many frequencies available to be used by your access point and your

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 >> Our networks run at a predefined speed. For example, a 1000BASE-T gigabit network operates and sends traffic at 1 gigabit per second. This network cannot

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 >> If you’re the administrator of routers, then you’re certainly familiar with the importance of

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 >> As you’re probably aware, at the Mac address level, there’s no

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 >> If you’ve recently installed a telephone on a desktop, an access point, or a camera on your