A quiet soup
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That was not the week I planned to have. Whoa.A week ago yesterday, I went to bed like I do every night. I read “Shouts & Murmurs” in ...
Lesson 15 - VLANs Overview
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At this stage you should be familiar with the concepts related to TCP/IP traffic flow and switch operation. You should also feel confident a...
Lesson 14 - NTP and Syslog Services
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My previous three posts were a humble attempt to show you some real life networking issues and how to go about them using the skills describ...
We tell stories
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I’ve been thinking a lot lately about words, and about the way we tell stories. Today, I wanted to share some of the things that have been ...
Lesson 13 - Layer 2 Connectivity Troubleshooting Part 3
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This lesson is the last one in the series on how to troubleshoot connectivity issues at the layer 2 of OSI model. Bear in mind, that these d...
Lesson 12 - Layer 2 Connectivity Troubleshooting Part 2
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In the previous lesson I attempted to show you how to go about a performance problems we might experience due to the duplex mismatch. It wa...
Lesson 11 - Layer 2 Connectivity Troubleshooting Part 1
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The last two lessons I tried to explain the foundations related to layer 2 operation. I discussed very important switching process and CDP ...
Before you know it
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Somewhere, a woman named Corentine is serving leeks vinaigrette for dinner. It’s been ten years, but I know it.Corentine was my host mother...
Lesson 10 - Cisco Discovery Protocol
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In the previous lesson we have explored how switches build their mac address table (aka Content Addressable Memory). It is critical to unde...
What this summer felt like
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Labor Day sneaked up on us.We fell asleep last night with the windows open, and this morning, there was a chill in the house. I know I’m no...