Example Of Multiple Vrrp Backup Groups - D-Link xStack DGS-3610 Series Configuration Manual

Chapter 46 VRRP Configuration
network 60.154.101.0 0.0.0.255 area 10
network 192.168.201.0 0.0.0.255 area 10
!
!
end
As shown above, devices R1 and R2 are in the same VRRP backup group 1, use the same
VRRP backup group authentication mode (no authentication), point to the same virtual IP
address (192.168.201.1) and are both in the VRRP preemption mode. The VRRP
Advertisement interval for devices R1 and R2 are 3 seconds. In normal cases, since the
VRRP backup group priority of device R1 is 120 but that of R2 is the default value 100,
device R1 acts as the VRRP Master in normal cases. If device R1 in the Master status finds
its WAN interface GigabitEthernet 2/1 is unavailable, device R1 decreases its priority in the
VRRP backup group from 90 to 30, so that device R2 can become the Master. If router R1
finds its WAN interface GigabitEthernet 2/1 becomes available later, it increases its priority in
VRRP backup group from 30 to 120, so that device R1 becomes the master once again.
46.5.4 Example of Multiple VRRP Backup
Groups
Besides the single backup group, DGS-3610 series also allow multiple VRRP backup groups
configured on the same Ethernet interface. There are obvious benefits for using multiple
backup groups. It is possible to implement load balancing through mutual backup to offer
more stable and reliable network services.
Establish the connections according to Figure 47-4. In this configuration example, user
workstation group (192.168.201.0/24) is using the backup group that is composed of routers
R1 and R2. Some user workstations (such as A) point its gateway to the virtual IP address
192.168.201.1 of backup group 1, while the others (such as C) point its gateway to the virtual
IP address 192.168.201.2 of backup group 2. Device 1 acts as the master in backup group 1
and standby in backup group 1; device 2 acts as the standby in backup group 2 and master
in backup group 1. The configurations for devices R1 and R2 are described as follows.
Configurations on device R1:
!
!
hostname "R1"
!
interface FastEthernet 0/0
no switchport
ip address 192.168.201.217 255.255.255.0
vrrp 1 timers advertise 3
vrrp 1 ip 192.168.201.1
vrrp 2 priority 120
vrrp 2 timers advertise 3
vrrp 2 ip 192.168.201.2
vrrp 2 track GigabitEthernet 2/1 30
!
46-16
DGS-3610 Series Configuration Guide