Review of Interior Gateway Protocols and Exterior Gateway Protocols

The world of TCP/IP is both logical and a little bit magical. Logical in the way that it adheres to well-defined inflexible rules; Class A IP addressing schemes use a default mask of; Layer 3 addresses are thirty-two bits in length subdivided into four octets containing eight bits each. Without routing protocols, packets don’t reach their final destination. The routing of packets through a network infrastructure is where the magical part comes into play.

Because packets have both a source and destination address, it would seem that with appropriately intelligent routers factored into the mix, packets could find their way without much assistance through a network. This ...

Get OSPF Network Design Solutions, Second Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.