Static, default, and OSPFv2 — plus FHRP for redundancy.
Routers connect different IP networks. This module covers how a router decides where to forward a packet, the difference between connected/static/default routes, single-area OSPFv2 in detail, and how First-Hop Redundancy Protocols keep gateways alive.
Welcome to module 4. Static, default, and OSPFv2 — plus FHRP for redundancy. I'll meet you again at the top of every chapter — this module's course coverage is 22%, so don't rush it. Pick chapter 4.1 below to start.
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A router receives a frame, strips the L2 header, looks up the IP destination in its routing table, picks the longest-prefix match, re-encapsulates in a new L2 frame for the outgoing interface, and sends it on. This chapter walks through that path step by step.
Static routes give predictable behaviour with zero overhead. This chapter covers next-hop and exit-interface forms, default routes, host routes (/32), floating statics, and the IPv6 versions of all of them.
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