Views: 739This is a great question that is answered in my courses that teach L2 Ethernet, but I have never answered here. So let’s dive in. VLANs are one of the fundamental building blocks of Ethernet switching. They allow us to divide a physical switched network into multiple logical Layer 2 broadcast domains. But when
Native VLAN vs. Normal VLAN: What Is the Difference on a Cisco Switch? Read More »
Views: 37,0862-Day Instructor-Led Hands-On Lab CourseAvailable through Web-Based Live Delivery or On-Site DeliveryMinimum 10 Students – Maximum 16 Students What Students are saying about this class Course Description Wireshark is one of the most powerful tools available to network technicians, engineers, administrators, and support professionals—but capturing packets is only the beginning. The real skill is
CSI-HO-020-A – Explore Packet Analysis with Wireshark Standard Edition – 2 Day Read More »
Views: 34,492Ethernet, TCP/IPv4, Addressing, Subnetting, Routing, IP Services, and Quality of Service 3-Day Instructor Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Ethernet and IPv4 are two of the fundamental technologies behind modern networking. Whether traffic is crossing a local network, accessing an application,
CSI-HO-001-B – Hands-On TCP/IP and Ethernet Fundamentals – 3 Day Read More »
Views: 36,867Ethernet, TCP/IPv4, Routing, Network Services, Security, QoS, WAN Technologies, and IPv6 Fundamentals 5-Day Instructor Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Modern networks are built from layers of interconnected technologies. Ethernet provides local network connectivity, IPv4 provides addressing and packet delivery, TCP
CSI-HO-001-C – Hands-On TCP/IP and Ethernet Fundamentals – 5 Day Read More »
Views: 1,970What I have created here is a somewhat technical SWOT Analysis for Network Engineers and Technicians for one of today’s top networking subjects of interest: the high speed needs being delivered by Ethernet technology for AI and for Data Centers. Introduction: Why High-Speed Ethernet Matters in AI Infrastructure High-Speed Ethernet has become a foundational
High-Speed Ethernet for AI and Data Centers Read More »
Views: 4,876Many technicians and network engineering staff, as well as IT staff, often need to “tap” into the Ethernet to capture and troubleshoot network traffic. A full-duplex tap (also called a network tap) is a hardware device placed inline on an Ethernet link that allows network engineers to capture all traffic traveling in both directions
Ethernet Taps to Capture Network Traffic Read More »
Views: 2,974Whether you are performing preventive maintenance or repairing routers or switches or any other network equipment, you need a solid toolkit to easily perform the task. First, let me list for you what I have in my service/repair toolkit. These items are mostly available at Amazon, of course, and if you click any of
Servicing or Repairing Network Equipment Read More »
Views: 7,580As many of you who have been in my classes, or are my clients, know, I am not a fan of the accuracy and meaning of speed tests. Perhaps I am being a little technical here. Over the next several posts, I want to provide some detailed information on Speed Tests. I thought the
What are the best Speed Test tools? Read More »
Views: 6,375A great question in my two day Security class recently. The physical layer (Layer 1) of the layered model is responsible for the transmission of raw data bits over a communication medium. Although it is often considered more secure due to its reliance on physical components, it is still vulnerable to a variety of
What are some examples of Physical Layer Threats in Networking? Read More »
Views: 2,821Ethernet began as a Local Area Network (LAN) technology that provided world class speed at lower cost. In more recent times, Ethernet has become the delivery mechanism for Fiber to the Home and Business and the transport mechanism within the service provider network. With speeds of up to 100Gig and 400Gig, it is the
Why Your Team Needs L2 Ethernet Training Read More »
Views: 13,2062-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 Students – Maximum 16 Students Course Description Modern Ethernet networks depend on much more than basic switching. Network technicians and engineers increasingly need to understand Ethernet behavior, TCP performance, IPv4 addressing, routing, and packet-level troubleshooting as an integrated set of skills.
CSI-HO-039 – Hands On Advanced Ethernet and TCP/IPv4 Read More »
Views: 14,2514-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 Students – Maximum 16 Students Course Description Modern Ethernet networks extend far beyond basic switching and VLAN operation. High-performance applications, storage systems, data centers, and converged networks depend on Ethernet, TCP/IP, addressing, routing, and specialized storage protocols working together efficiently. Engineers
CSI-HO-038 – Hands On Advanced Ethernet and Netmask Read More »
Views: 13,8012-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 Students – Maximum 16 Students Course Description Ethernet is the foundation of modern local area networking and remains one of the most important technologies for technicians, engineers, network administrators, and support personnel to understand. While Ethernet may appear simple on the
CSI-HO-037 – Hands-On L2 Ethernet Fundamentals Read More »
Views: 13,2403-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 Students – Maximum 16 Students What Students are Saying About this Class: Course Description Modern networks depend on technologies operating together across multiple layers. A technician or engineer who understands only Ethernet switching or only IP routing sees just one part
CSI-HO-036 – L1, L2, and L3 Networking Protocols – 3 Day Hands On Lab Course Read More »
Views: 12,174 1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 8 Students – Maximum 16 Students Course Description Ethernet is the foundation of modern Local Area Networks and is also widely used throughout enterprise, broadband, metropolitan, data-center, and service-provider networks. Anyone responsible for installing, operating, supporting, or troubleshooting networks needs a solid
CSI-HO-009-A – L2 Ethernet in a Day – 1 Day Read More »
