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Posts From Wendell Odom

I’ve Added More Tech Content to the CCNA 200-301 Books!

I’ve Added More Tech Content to the CCNA 200-301 Books!

🕔09:05, 14.Jun 2023

The last several editions of the CCNA Official Cert Guides include an appendix titled “Exam Updates.” It exists as a simple way to deliver small amounts of new content to you, the people who own the book. Books are great,

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Terminology Heat Maps and Seed Terms

Terminology Heat Maps and Seed Terms

🕔09:05, 13.Jun 2023

I like to use what I call terminology heat maps when studying, so much so that I also recommend them to students when teaching classes at O’Reilly (learning.oreilly.com). I describe what a terminology heat map is in class – but

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Cisco CCNA Roadmap – CY2023 Plans Announced!

Cisco CCNA Roadmap – CY2023 Plans Announced!

🕔10:15, 24.May 2023

Back in 2023, Cisco announced an annual cycle during which they consider making changes in each certification track. Cisco just announced their plans for this year’s cycle for the CCNA certification, and the big news: No CCNA blueprint changes! I

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CCNA Updates August – October Timeframe… Each Year?

CCNA Updates August – October Timeframe… Each Year?

🕔11:12, 5.Dec 2022

Cisco just released web pages and has begun discussing a new initiative called Cisco Certification Roadmaps. The short version: Cisco tells us the timing of potential updates to their exams. Yep. It’s a whole new approach, and Cisco is being

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Config Lab: PAT w/ a Pool 1

Config Lab: PAT w/ a Pool 1

🕔15:05, 15.Oct 2021 Configuring PAT with a pool of inside global addresses combines almost everything you can possibly configure with NAT in a Cisco router. Look at the requirements in this latest lab and put together your own configuration, with a pool and Read Full Article
Config Lab: Interface PAT 1

Config Lab: Interface PAT 1

🕔13:05, 15.Oct 2021 PAT – Port Address Translation – plays a huge role in IPv4 networks. Today’s post looks at the simpler of the two configuration options for router NAT configuration: a single router interface IP address as in the inside global address. Read Full Article
Config Lab: Dynamic NAT 1

Config Lab: Dynamic NAT 1

🕔11:05, 15.Oct 2021 Dynamic NAT – specifically, dynamic NAT without also doing PAT – creates a 1-to-1 mapping between an inside local address and an inside global address. Unlike static NAT, however, dynamic NAT does not pre-determine the specific IP addresses to map. Read Full Article
Config Lab: Static NAT 1

Config Lab: Static NAT 1

🕔09:05, 15.Oct 2021 Static NAT matches a single inside local address with a single inside global address. It does not conserve addresses, but it does let you make a server reachable to external devices with a permanent address to use with the static Read Full Article
Config Lab: Syslog 3

Config Lab: Syslog 3

🕔17:05, 12.Oct 2021 When first starting out with Cisco routers and switches, log messages are those irritating messages that show up to interrupt us from the current task at hand. Over time, most of us find those messages more and more useful. Eventually, Read Full Article
Config Lab: Syslog 2

Config Lab: Syslog 2

🕔14:05, 12.Oct 2021 Most of us skim through descriptions of Syslog messages and message levels. This lab helps you slow down just a bit with a configuration exercise that makes you remember message severity levels and how to configure them. As usual, the Read Full Article

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