CCNA Video Mentor is a unique video product that provides you with more than four hours of personal visual instruction from best-selling author and instructor Wendell Odom. In the 20 videos presented on the DVD, Wendell walks you through common Cisco® router and switch configuration topics. Designed to develop and enhance hands-on skills, each video guides you through essential configuration tasks for both the CCENT and CCNA® certification exams, including router and switch configuration, IP subnetting, RIP, OSPF, and EIGRP configuration, configuring VLANs, IPv6, PAT, PPP and CHAP, and access lists.

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If you are into the field of Cisco networks or you are going for any Cisco certification, subnetting is the absolute topic which you need to master. Training yourself for fast subnetting techniques is a topic that I will cover later but now I am listing some Network Subnet Calculators that you can use to verify your results if you’re preparing for a certification or else you can plan your subnets if you’re practically implementing subnets.

1- Online IP Subnet Calculator

The first one is the online IP subnet calculator. This is easy if you don’t want to download or install anything on your system. This tool is online and is very handy in calculating different subnet with lots of options.

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Understanding Spanning Tree Protocol:

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The acronym VLAN expands to Virtual Local Area Network. A VLAN is a logical local area network (or LAN) that extends beyond a single traditional LAN to a group of LAN segments, given specific configurations. Because a VLAN is a logical entity, its creation and configuration is done completely in software.

More info on VLANs from the following links:

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CBT Nuggets is the best video training available about Cisco and other technology certifications. IP Subnetting is an important part of CCNA 640-802 or ICND2 640-816 and ICND1/CCENT 640-822 exams. Actually it is the basis of all the future Cisco certifications and rather a base of your networking skills. Here are the complete online video tutorial regarding IP Subnetting. It is divided into three parts. All three parts are given below:

A very good video explanation of IPv6 protocol. Todd Lammle explains how IPv6 works.

IPv6 stands for Internet Protocol version 6. It is the second version of the Internet Protocol to be used generally across thevirtual world. The first version was IPv4. IPv5 was a protocol of a different sort, intended to support video and audio rather than all-purpose addressing. IPv6 is also known as IPng, which stands for IP Next Generation.

If you want to practice your CCNA skills, you should use some kind of exam simulation in order to see that how competent you are and in which topics you still need to work. Here is a link where you can find different kinds of free exams related to CCNA. For example, if you are going for an upgrade exam, you should click on the CCNA upgrade exam and if you want to go for the new 640-802 exam, you should click that. Access the practice exams from here:

http://www.howtonetwork.net/public/department33.cfm

The video below shows you how to access the free exams.