Category Archives: Routing

Understanding the Characteristics of Network topology Architectures.

Network topology architectures refer to the overall layout or structure of a computer network. Different network topology architectures have their own characteristics that define how devices are interconnected and how data flows within the network. Below are examples of Network Topology Architectures including 2 tier, 3 tier, Spine-leaf, WAN, Small office/home office (SOHO), and On-premises and cloud. i.… Read More »

Overview of IPv4 and IPv6 Static Routing.

Static routing involves manually configuring routing entries into a router’s routing table. Unlike dynamic routing, which uses algorithms and protocols to determine routes automatically, static routes are fixed and must be updated manually if the network topology changes. Both IPv4 and IPv6 static routing follow similar principles but are applied to different address families. i. Default Route A… Read More »

How a Router Makes a Forwarding Decision by Default.

A router uses a systematic process to determine the best route for forwarding a data packet. This process involves several key factors: longest match, administrative distance, and routing protocol metric. Below is a detailed explanation of each factor and how they contribute to the routing decision: 1. Longest Match The longest match principle means that the router selects… Read More »

What is GLBP? Explained with Examples.

Understanding Gateway Load Balancing Protocol (GLBP) Gateway Load Balancing Protocol (GLBP) is a Cisco proprietary solution for redundancy and load balancing in an IP network. GLBP allow automatic selection and simultaneous recovery from first hop router failures. GLBP is designed to overcome some of the limitations of earlier First Hop Redundancy Protocols (FHRPs) such as Hot Standby Router… Read More »

Components of The Routing Table.

The routing table is a fundamental component of network devices like routers, which directs incoming data packets to their destination addresses by providing a set of rules for packet forwarding. Below is a brief introduction to the essential components of a routing table: i. Routing Protocol Code The routing protocol code identifies the source of the routing information.… Read More »