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    What Happens when there are duplicate MAC Addresses. How many MAC Addresses can a Switch learn?

    This post is from our Cisco CCNA Training Course. Instructor Mark Jacob was presenting a Q&A Session in our ICND1 CCNA class and answered a question regarding MAC Addresses and when they get associated to devices. Transcription: What issues arise if there are duplicate MAC addresses? MAC addresses are important. Let’s say I’m a PC … Continue reading What Happens when there are duplicate MAC Addresses. How many MAC Addresses can a Switch learn?

    How MAC Addresses Are Assigned to Devices

    This post is from our Cisco CCNA Training Course. Instructor Mark Jacob was presenting a Q&A Session in our ICND1 CCNA class and answered a question regarding MAC Adresses and when they get associated to devices. Transcription: The OUI is an abbreviation that stands for Organizationally Unique Identifier. “What organization?” you might ask. Let’s take … Continue reading How MAC Addresses Are Assigned to Devices

    Using Cisco’s EEM for path selection in IPv6 networks

    In a previous blog I configured and HSRP pair using an entirely IPv6-oriented topology. I demonstrated the lightning quick failover that can be achieved with carefully crafted timers. However, a careful reader might have noticed that I didn’t consider the path BACK to my source of origin in my topology. So let’s address that today. … Continue reading Using Cisco’s EEM for path selection in IPv6 networks