Image of Jeremy L. Gaddis, CCNA, CCNP (and Cortney, in case you were wondering)

Backing Up Cisco IOS Configurations to a TFTP Server

September 19, 2011
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In the previous article, you learned what TFTP is used for and how to install a TFTP server. While preparing for the CCNA test, you’ll use TFTP primarily for these purposes: Backing up and restoring IOS configuration files Backing up Cisco IOS software Upgrading IOS on routers and switches There are a few other ways […]

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CCNA Giveaway #1

September 16, 2011
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A while back, I had the idea for this site and finally got to work on it. The articles and lab exercises available now are only the beginning of what will eventually be the #1 site for lab exercises for those studying for the Cisco CCNA certification. In the spirit of “kicking off” the site […]

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An Introduction to TFTP

September 16, 2011
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Chances are, even if you haven’t used it, you’ve probably at least heard of FTP, the File Transfer Protocol. At one point, it was the protocol you used when you needed to get files from there to here or vice versa. Nowadays, we have e-mail systems that can handle attachments tens of megabytes in size […]

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Using traceroute for Troubleshooting and Verification

September 12, 2011
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Previously, we discussed using the ping command. Another useful utility in our toolbox is traceroute. The traceroute command is another diagnostic tool, used for displaying the path that IP packets take through a network to the destination. Like ping, the traceroute utility is built into Microsoft Windows (called “tracert”), Apple OS X, and Linux. It’s […]

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LAB: Configure a Back-to-Back Serial Connection

September 12, 2011
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Objective Configuring serial connections between routers for WAN connections is a basic task that you’ll need to be proficient at in order to pass the CCNA exam. In this exercise, you’ll demonstrate the ability to successfully configure a serial connection between two routers that are directly connected. Topology Two routers are connected back-to-back via Serial […]

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