Route Summarization and the Route to Null0
10Implementing a route to NULL0 is a well-known method for dropping traffic headed somewhere you don't want it to go, or... a location that doesn't exist!
When we summarize networks by creating an aggregate route, we'll normally end up with some "overflow"; it's just the way it works when you're working with binary. Remember, powers of 2! This is one reason we could potentially end up with traffic headed somehere that doesn't exist....
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Timeline:
0:00 - Introduction
1:02 - Topology Overview
1:39 - Individual Static Routes
2:47 - How to Summarize
6:52 - Installing Summary Route
7:28 - Discovering a Routing Loop!
10:25 - The Route to NULL0
12:50 - Same Demonstration, But With EIGRP