3com S7906E 설치 설명서

 

1-13 

By default, a MAC address is created for a VRRP group after the VRRP group is created, and the virtual 

IP address is associated with the virtual MAC address. With such association adopted, the hosts in the 

internal network do not need to update the association between IP address and MAC address when the 

master changes.  

z 

Virtual IP address is associated with real MAC address of the interface 

If an IP address owner exists in a VRRP group and you associate the virtual IP address with the virtual 

MAC address, two MAC addresses are associated with an IP address. In this case, you can associate 

the virtual IP address of the VRRP group with the real MAC address, so that the packets from a host are 

forwarded to the IP address owner according the real MAC address. 

Follow these steps to configure the association between MAC address and virtual IP address: 

Enter system view 

system-view 

— 

Configure the association 
between virtual IP address  and 
MAC address 

vrrp method { real-mac | 
virtual-mac } 

Optional 

The virtual MAC address is 
associated with the virtual IP 
address by default. 

 

 

z 

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. In this mode, the virtual IP address is 

always associated with the virtual MAC address. 

z 

You should configure this function before creating a VRRP group. Otherwise, you cannot modify 

the mapping between the virtual IP address and the MAC address. 

 

VRRP works in one of the following two modes: 

z 

Standard protocol mode: In a VRRP group, only the master forwards packets. 

z 

Load balancing mode: In a VRRP group, all routers (master and backups) that have AVF can 

forward packets to realize load balancing. 

After you configure the working mode of a VRRP group, all VRRP groups on the router work in the same 

mode. Follow these steps to configure the VRRP working mode: 

Enter system view 

system-view 

— 

Configure VRRP to work in the 
standard protocol mode 

undo vrrp mode 

Optional 

By default, VRRP works in the 
standard protocol mode. 

Configure VRRP to work in the 
load balancing mode 

Optional 

By default, VRRP works in the 
standard protocol mode.