Jan
31
Today's CCENT-level challenge involves the methods that are commonly used to describe and compare modern network infrastructures regarding such things as performance and structure. Read More
Jan
30
Dennis caught our eye creating Visio versions of the best-selling Volume 1 workbook network topology for his fellow students in the IEOC. Thanks again Dennis and enjoy your $50 Gift Certificate for Amazon.com. The files that Dennis created for his fellow students can be found by clicking here. Here is his story... In 1991, I began my official work life as a Customer Service Representative.  I repaired all manner of equipment for many well-known small to medium sized retail chains and large... Read More
Jan
26
In our recent Implement Layer 2 Technologies series, we examined Q-in-Q tunneling in great detail. In this discussion, I mentioned a big caution about the Service Provider cloud with 802.1Q trunks in use for switch to switch trunking. This caution involved the use of an untagged native VLAN. Read More
Jan
24
Today's challenge is drawn from the exciting area of CCNA Security. Enjoy. As always, you can find the answer in the comments area a day or two after the date of this post. Read More
Jan
23
Cisco had promised us Christmas 2010 editions of these new exams. Those dates have slipped again. Read More
Jan
22
You will find the answer to today's CVOICE Exam Practice in the comments area of the blog approximately 24 hours after the post. Have fun! Read More
Jan
15
Beginning January 17th, 2011, Cisco will add Layer 2 Switch Troubleshooting to the 2 hour Troubleshooting section of the lab exam. Like the Layer 3 Troubleshooting that you will perform, these switches are emulated devices using Cisco's IOU product - that stands for IOS on UNIX and is a similar approach to the popular Dynamips platforms. Cisco calls the ability to emulate switches on UNIX - L2IOU. Read More
Jan
13
Many times, students believe that they could use a bit of a boost when it comes to solving the very complex and difficult Practice Lab Exams featured in our famous Volume II workbook here at INE. To respond to this, Keith Barker and I came up with an idea for a new INE product unlike anything that had been created before. We created a fully interactive video guide to lab exam strategy and actual solutions for the first five labs of the workbook. But we did not stop there. We also recorded bonus... Read More
Jan
08
One of the most important technical protocols on the planet is Open Shortest Path First (OSPF). This highly tunable and very scalable Interior Gateway Protocol (IGP) was designed as the replacement technology for the very problematic Routing Information Protocol (RIP). As such, it has become the IGP chosen by many corporate enterprises. OSPF’s design, operation, implementation and maintenance can be extremely complex. The 3-Day INE bootcamp dedicated to this protocol will be the most in-depth... Read More
Jan
03
Continuing my review of titles from Petr’s excellent CCDE reading list for his upcoming LIVE and ONLINE CCDE Bootcamps, here are further notes to keep in mind regarding EIGRP. About the Protocol The algorithm used for this advanced Distance Vector protocol is the Diffusing Update Algorithm. As we discussed at length in this post, the metric is based upon Bandwidth and Delay values. For updates, EIGRP uses Update and Query packets that are sent to a multicast address. Split horizon and DUAL form... Read More

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