Basics: Cisco VLAN Trunking Protocol – Transparent discard and passing VTP Packets

It’s a common discussion about when Cisco VTP protocol is actually forwarded through Cisco switches and when it’s isn’t. I’ve always gotten it somewhat confused and when I stumbled across some old notes on the topic I had an ah-hah moment. I’m answering the equation about when using VTP in your network, which versions are risky – that’s risky is terms of how do you prevent VTP updates from ‘crossing’ a switch.

◎ Musing: On Permananent and Ephemeral Knowledge and Exam Study

Like many tech-workers, we need to ingest vast quantities of knowledge to get started in our jobs. Without that knowledge, there is no working in our business. What is unique, however, is that we continue to ingest knowledge for the remainder of our careers – often consuming large portions of our personal time and energy. Worse we even get tested on it by sitting formal examinations.

How can we manage this process to be more effective ?