Chapter 1. Inter-Domain Routing Concepts
Imagine what today’s Internet would be like if the whole thing was routed by a single routing protocol such as OSPF or IS-IS. The visibility of every subnet address would make stability almost impossible. Security would be a nightmare because an attack against the routing protocol—or even an innocent configuration error—could bring down the entire Internet. And who would administer it? How would we coordinate an upgrade or enhancement of the protocol among all the network administrators around the world?
As the ARPANET, the precursor to the modern Internet, began growing large in the late 1970s, these issues were quite real, and efforts were begun to create a scalable way to manage the network. The fundamental ...
Get Routing TCP/IP, Volume II: CCIE Professional Development, Second Edition 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.
