Understanding VTP Versions and Modes: A Complete Guide for Network Engineers Managing VLANs across multiple switches can be challenging, especially in large networks. Cisco’s VLAN Trunking Protocol (VTP) simplifies VLAN management by sharing VLAN configuration information across switches. To use VTP effectively, you need to understand VTP versions and VTP modes, which define how switches … Read more
Understanding VTP (VLAN Trunking Protocol): The Backbone of VLAN Management Introduction Imagine you’re managing a large campus network with dozens of switches, each supporting multiple VLANs.Now, think about the amount of manual work required to create or delete VLANs on every single switch one by one.Sounds exhausting, right? This is where VTP (VLAN Trunking Protocol) … Read more
Learn how VLAN frame tagging works and why it’s essential for multi-switch networks. Understand ISL, DTP, and IEEE 802.1Q tagging protocols with easy explanations, real examples, and Cisco configuration commands. Perfect for network engineers and CCNA learners. When VLANs span across multiple switches, the switches need a way to identify which VLAN each Ethernet frame … Read more
Have you ever thought about how switches in a network keep different types of traffic separate even though all the devices share the same physical cables?That magic happens through VLANs (Virtual Local Area Networks) and VLAN port tagging. VLANs divide one physical network into multiple smaller, logical networks — improving performance, organization, and security.But when … Read more
When you connect multiple devices to a network switch, the switch normally forwards broadcasts and multicasts to every port (except the one that sent the traffic). This means all devices can “hear” each other, which can create unnecessary noise and reduce performance in large networks. That’s where VLANs (Virtual Local Area Networks) come in. VLANs … Read more
When devices communicate in a computer network, they need a way to send and receive data. The method of communication between two devices is called the transmission mode. Think of it like a road: some roads allow traffic in one direction only, while others allow traffic both ways. In networking, there are three main transmission … Read more
Learn the difference between collision domain and broadcast domain in computer networks. Understand how hubs, switches, and routers handle them with easy examples for beginners. When we talk about computer networks, two important concepts often come up – collision domain and broadcast domain. These terms might sound technical, but once you break them down, they … Read more
Learn why BGP prefers eBGP routes over iBGP when all attributes are equal. This blog explains the concept with an easy topology, configuration, and clarification on the AD vs path selection confusion. In the previous blogs, we explored several BGP path selection attributes like Weight Local Preference Locally Originated AS Path Origin Code MED Each … Read more
Learn how the BGP MED (Multi-Exit Discriminator) attribute influences path selection in multi-homed networks. Understand its configuration, verification, and impact on inbound traffic for optimized routing. In the previous blogs, we explored several BGP path selection attributes such as Weight, Local Preference, Locally Originated, AS Path Length, and Origin Code. Moving forward in the selection … Read more
Explore how BGP Origin Code influences path selection in routing decisions. Learn the differences between IGP, EGP, and Incomplete origins with configuration examples, verification outputs, common mistakes, and interview questions for a clear understanding of this BGP attribute. When we dive into BGP path selection, it’s all about how routers decide the best path when … Read more