Chapter 1 Vrrp Configuration; Vrrp Overview - H3C S7500 Series Operation Manual

Operation Manual – VRRP-HA
H3C S7500 Series Ethernet Switches

Chapter 1 VRRP Configuration

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

VRRP Overview

VRRP Configuration
Displaying and Maintaining VRRP
VRRP Configuration Examples
Troubleshooting VRRP
1.1 VRRP Overview
Virtual Router Redundancy Protocol (VRRP) is a fault-tolerant protocol.
As shown in
A default route (for example, the next hop address of the default route is
10.100.10.1, as shown in the following figure) is configured for every host on a
network.
The packets destined for the external network segments and sourced from these
hosts go through the default routes to the Layer 3 Switch, implementing
communication between these hosts and the external network.
If Switch fails, all the hosts on this segment taking Switch as the next-hop through
the default routes are cut off from the external network.
10.100.10.7
Host 1
Figure 1-1 LAN networkin
VRRP, designed for LANs with multicast and broadcast capabilities (such as Ethernet),
settles the problem caused by switch failures.
Figure 1-1, in general,
Network
Switch
10.100.10.1
Ethernet
10.100.10.8
Host 2
g
10.100.10.9
Host 3
1-1
Chapter 1 VRRP Configuration