Chapter 1 Vrrp Configuration; Introduction To Vrrp; Overview - H3C S9500 Series Operation Manual

Operation Manual – VRRP
H3C S9500 Series Routing Switches

Chapter 1 VRRP Configuration

When configuring VRRP, go to these sections for information you are interested in:

Introduction to VRRP

Configuring VRRP for IPv4
Configuring VRRP for IPv6
IPv4-Based VRRP Configuration Examples
IPv6-Based VRRP Configuration Examples
Troubleshooting VRRP
Note:
The term router and the icon router in this document refer to a router in a generic
sense or an S9500 series routing switch running routing protocols.
At present, the interfaces that VRRP involves can only be VLAN interfaces for
S9500 series switches.
1.1 Introduction to VRRP
This section covers these topics:

Overview

VRRP Group Overview
VRRP Timers
Format of VRRP Packets
Principles of VRRP
VRRP Interface Tracking
VRRP Application (Taking IPv4-Based VRRP for Example)
1.1.1 Overview
As shown in
hop for every host on a network segment, allowing all packets destined to other network
segments to be sent over the default route to the gateway and then be forwarded by the
gateway. This enables hosts on a network segment to communicate with external
networks. However, when the gateway fails, all the hosts using the gateway as the
default next-hop router are isolated from the external network.
Figure 1-1, you can configure a default route with the gateway as the next
1-1
Chapter 1 VRRP Configuration