Network Redundancy Explained: Avoiding Single Points of Failure (Networking Basics)
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In this lesson, we break down network redundancy and how it prevents outages by eliminating single points of failure. You’ll learn why redundant NICs, switches, routers, and WAN connections are essential for mission-critical systems, and how failover works when hardware or links go down. We also explore HSRP and VRRP, protocols that allow multiple routers to share a virtual default gateway IP address, ensuring seamless failover when a router fails. The video also covers dynamic routing protocols and how they automatically reroute traffic—much like GPS recalculating around a closed road—to maintain connectivity even during disruptions.
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