Chapter 9

FHRP Concepts

Objectives

Upon completion of this chapter, you will be able to answer the following questions:

  • What is the purpose and operation of first hop redundancy protocols?

  • How does HSRP operate?

Key Terms

This chapter uses the following key terms. You can find the definitions in the Glossary.

First Hop Redundancy Protocols (FHRP) Page 262

Hot Standby Router Protocol (HSRP) Page 262

active router Page 264

standby router Page 265

Virtual Router Redundancy Protocol (VRRP) Page 266

master router Page 267

backup router Page 267

Gateway Load Balancing Protocol (GLBP) Page 267

ICMP Router Discovery Protocol (IRDP) Page 267

Introduction (9.0)

Your network is up and running. You’ve conquered Layer 2 redundancy without any Layer ...

Get Switching, Routing, and Wireless Essentials Companion Guide (CCNAv7) 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.

Start your free trial