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Chapter 5: VRRP Configuration Guide
Configuring VRRP
This section presents three sample VRRP configurations:
•
A basic VRRP configuration with one virtual router
•
A symmetrical VRRP configuration with two virtual routers
•
A multi-backup VRRP configuration with three virtual routers
Basic VRRP Configuration
Figure 4
shows a basic VRRP configuration with a single virtual router. Routers R1 and R2
are both configured with one virtual router (
Router R2 serves as the Backup. The four end hosts are configured to use 10.0.0.1/16 as
the default route. IP address 10.0.0.1/16 is associated with virtual router
Interface Addr. = 10.0.0.1/16
VRID=1; Addr. = 10.0.0.1/16
If Router R1 becomes unavailable, Router R2 takes over virtual router
associated IP addresses. Packets sent to 10.0.0.1/16 go to Router R2. When Router R1
comes up again, it takes over as Master, and Router R2 reverts to Backup.
64
Master
R1
H1
H2
Default Route = 10.0.0.1/16
Figure 4. Basic VRRP Configuration
). Router R1 serves as the Master and
VRID=1
Backup
R2
VRID=1
Interface Addr. = 10.0.0.2/16
VRID=1; Addr. = 10.0.0.1/16
10.0.0.1/16
H3
Internet Appliance User Reference Manual
.
VRID=1
H4
and its
VRID=1
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