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DES-7200 Configuration Guide Chapter 1 VRRP Configuration
1-4
master router and router A becomes the backup. In the LAN, hosts 1 and 2 use the IP
address of virtual router 1 192.168.12.1 as the default gateway, while hosts 3 and 4
use the IP address of virtual router 2 192.168.12.2 as the default gateway. In this
VRRP application, router A and router B provide the route redundancy to share the
traffic from the LAN, that is, load balancing.
1.3 VRRP Configuration
1.3.1 VRRP Configuration Task
List
The VRRP is applicable for the multicast or broadcast LANs, such as Ethernet. The
configuration of the VRRP is concentrated on the Ethernet interfaces. The
configuration tasks are as follows:
¾ Enable VRRP backup function (mandatory)
¾ Set the authentication string of the VRRP backup group (optional)
¾ Set the advertisement interval of the VRRP backup group (optional)
¾ Set the preemption mode of the router in the VRRP backup group (optional)
¾ Set the priority of the router in the VRRP backup group (optional)
¾ Set the interface to be monitored by the VRRP backup group (optional)
¾ Set the IP address to be monitored by the VRRP backup group (optional)
¾ Set the learning function of the VRRP advertisement timer device(optional)
¾ Set the description string of the router in the VRRP backup group (optional)
¾ Set the delay reload of the VRRP backup group(optional)
Not all of the tasks are required here. Tasks that are required for a VRRP backup
group depend on user requirements.
1.3.2 Enabling VRRP Backup
Function
By specifying the backup group number and virtual IP address, you may add a backup
in the specified LAN network segment to enable the VRRP backup function of the
related Ethernet interfaces.
Command Purpose
DES-7200(config-if)# vrrp group ip
ipaddress [secondary]
Enable VRRP.
DES-7200(config-if)# no vrrp group ip
ipaddress [secondary]
Disable VRRP.
The backup group number is in the range of 1 to 255. If the virtual IP address
ipaddress is not specified, the router will not participate in the VRRP backup group. If