You've learned how routers forward packets across networks.
Routing Basics:
- Routers use routing tables to forward packets between networks
- Longest prefix match selects the most specific route
Route Types:
- Connected routes are auto-generated for attached networks
- Static routes are manually configured
- Floating static routes provide backup with higher AD
Loop Prevention:
- Split horizon stops advertising routes back to their source
- Route poisoning announces failures with infinite metric
- Hold-down timers reject stale updates
Next, you'll learn about dynamic routing protocols.