Case Study: Redistribution
You will often find yourself wanting to redistribute routes from EIGRP into other protocols and routes from other protocols into EIGRP. The main problem with redistribution between protocols is that it's very easy to create redistribution routing loops. Look at Figure 7-15 to see why.
Given the setup in Figure 7-15, the following events will occur:
Router C will advertise the 172.16.20.0/24 network to Router B; assume it has a metric of 3 hops when it reaches Router B.
Router B will now advertise this route with a metric of four hops to Router A.
Router A will redistribute the route into EIGRP with some metric and advertise it to Router D.
Router D will redistribute it back into RIP with a default metric of 1 hop, for ...
Get Advanced IP Network Design (CCIE Professional Development) now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
