👤Wendell Odom
🕔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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👤Wendell Odom
🕔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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👤Wendell Odom
🕔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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👤Wendell Odom
🕔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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👤Wendell Odom
🕔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
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👤Wendell Odom
🕔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.
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👤Wendell Odom
🕔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.
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👤Wendell Odom
🕔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
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👤Wendell Odom
🕔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,
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👤Wendell Odom
🕔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
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