Chapter 1. General Networking Theory

General Routing Concepts

Link-state and Distance Vector Protocols

Distance vector
  • Examples: Routing Information Protocol Version 1 (RIPv1), RIPv2, Interior Gateway Routing Protocol (IGRP)
  • Features periodic transmission of entire routing tables to directly connected neighbors
  • Mathematically compares routes using some measurement of distance
  • Features hop-count limitation
Link State
  • Examples: Open Shortest Path First (OSPF), Intermediate System-to-Intermediate System (IS-IS).
  • Sends local connection information to all nodes in the internetwork.
  • Forms adjacencies with neighboring routers that speak the same protocol; sends local link information to these devices.
  • Note that although this is flooding of information ...

Get CCIE Routing and Switching Exam Quick Reference Sheets 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.