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1-12 

z 

Reply: After receiving a request, the master sends a reply to the backup router to allocate a virtual 

MAC address. Upon receiving the reply, the backup router creates a VF corresponding to the 

virtual MAC address, and then the backup router becomes the owner of this VF. 

z 

Release: After a VF owner failed for a specified time, the router that takes over its responsibility will 

send a release to notify the other routers in the VRRP group to delete the VF of the failed VF owner. 

 

The format of the above four types of packets is similar to that of the advertisement in the VRRP 

standard protocol mode. The difference is that a packet used in the load balancing mode is appended 

with option fields, which carry information for load balancing. 

 

Complete these tasks to configure VRRP for IPv4: 

Optional 

When VRRP works in the load balancing 
mode, the association between the virtual IP 
address and the MAC address can be 
configured but is not effective. 

Configuring VRRP Working Mode 

Optional 

Required 

Configuring Router Priority, Preemptive Mode and 
Tracking Function 

Optional 

Configuring VF Tracking 

Optional 

The VF tracking function is effective only when 
VRRP works in the load balancing mode. 

Optional 

Enabling the Trap Function of VRRP 

Optional 

 

After the virtual IP address of a VRRP group is associated with a MAC address, the master takes the 

configured MAC address as the source MAC address of the packets to be sent, so that the hosts in the 

internal network can learn the association between the IP address and the MAC address and thus 

forward the packets to be forwarded to the other network segments to the master. 

There are two types of association between virtual IP address and MAC address: 

z 

Virtual IP address is associated with virtual MAC address