David’s Cisco Networking Blog:


March 26, 2010  7:02 AM

Using the GNS3 Network Simulator to create a Cisco CCNA Lab

Posted by: David Davis
CCNA, Cisco, gns3, lab, simulator

The best way to learn about Cisco networking is to have your own lab. However, that is hard to do (costly, takes up space, and time-consuming). The best way to do this is to have a virtual Cisco lab using GNS3. This is easy to do with proper instruction. Fortunately, Train Signal Training recently...

June 30, 2009  9:50 PM

Cisco reaches 1 Million certified, CCIE R&S Program Update, and NEW CCNA Voice Option

Posted by: David Davis
CCIE, CCNA, certification, Cisco, voice

1. Cisco recently announced that, to date, they have certified over 1 Million individuals and over 20,000 people with CCIE certifications. WOW - can you believe that there...

March 28, 2009  1:13 PM

Video: How to perform DHCP Snooping from Train Signal

Posted by: David Davis
CCNA, Cisco, dhcp, ios, snooping

In this sample of the Train Signal Cisco CCNA training course, Chris Bryant offers a demonstration on how to perform DHCP snooping in the Cisco IOS.

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February 27, 2009  11:11 PM

Cisco launches new CCNP & CCIE Wireless Ceritifications

Posted by: David Davis
CCIE, CCNA, CCNP, certification, Cisco, Wireless

Just launch, Cisco's new CCNP and CCIE Wireless certifications offer wireless experts a chance to prove their expertise! For some time, Cisco has offered the CCNA Wireless...

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February 22, 2009  5:42 AM

VIDEO: Cisco CCNA Security Firewall & SDM

Posted by: David Davis
CCNA, Cisco, sdm, Security

Learn how to use the Cisco Security Firewall and SDM in this step by step video, recorded by Chris Bryant, CCIE. This is a great way to prepare for your CCNA. Enjoy the video!

(or click on the video to go and watch it wider and in...

January 25, 2009  6:53 PM

Video: Confused about the CCNA? Get the CCNA Certification breakdown!

Posted by: David Davis
breakdown, CCNA, certification, Cisco

The process to obtain your CCNA Certification can be confusing. Luckily, in this informative video, the guys at Train Signal offer a breakdown of how you can get your CCNA:

[kml_flashembed movie="http://www.youtube.com/v/XxKW4P0OfPU" width="425" height="350"...

January 15, 2009  11:57 PM

New Cisco CCNA Security Video Training from Train Signal

Posted by: David Davis
640-553, CCNA, Cisco, Security, training, video

Chris Bryant, CCIE #12933, and Train Signal have released their latest video training course and it covers the Cisco CCNA Security certification. The course not only prepares you to pass...

December 20, 2008  3:55 AM

5 Networking buzz words you should know

Posted by: David Davis
CCNA, Cisco, Network Management, Networking

In today's quick tip, let me offer 5 Networking "buzz words" you should know:

  1. Get VPN – Group Encrypted Transport – Developed by Cisco in 2006 to allow secure connections over the Internet which is very easy to implement and...

December 15, 2008  3:27 AM

What is ARP and how does it work in the Cisco IOS?

Posted by: David Davis
CCNA, Cisco, Networking

The Address Resolution Protocol, or ARP, is a critical protocol in your network infrastructure. What is ARP? It’s an Internet protocol used to map an IP address to a MAC Address. Usually ARP just "works" and you don't have to do anything about it. However, there are reasons that you may need to...

August 25, 2008  9:19 PM

How to put an IP address on an Ethernet interface

Posted by: David Davis
CCNA, Cisco

There are 4 easy steps to accomplish this task.  Remember that you will always need to access the global configuration mode to add interfaces. Let’s walk through these steps together. First you should connect to your router. You would do this with the enable command. router>...

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