125decrease by a specified value; when the state of the track entry becomes positive or invalid, theweight values of all VFs on the routers restore their original values.To configure VF tracking:To do… Use the command… Remarks1. Enter system view system-view —2. Enter the specified interfaceviewinterface interface-type interface-number —3. Configure the VF to monitor aspecified track entryvrrp vrid virtual-router-id weighttrack track-entry-number [reduced weight-reduced ]RequiredNo track entry is specified bydefault.• You can configure the VF tracking function when VRRP works in either the standard protocol mode orload balancing mode; however, the VF tracking function is effective only when VRRP works in loadbalancing mode.• Do not configure VF tracking on an IP address owner.• By default, the weight of a VF is 255, and its lower limit of failure is 10.• If the weight of a VF is higher than or equal to the lower limit of failure, the priority of the VF is always255 and does not change with the weight value. Therefore, in case of an uplink failure, only when theweight of the VF owner decreases a properly specified value and becomes lower than the lower limit offailure, can another VF takes over the VF owner's work and becomes the AVF.Configuring VRRP packet attributesConfiguration prerequisitesBefore configuring the relevant attributes of VRRP packets, you should first create a VRRP groupand configure a virtual IP address for it.Configuration procedureTo configure VRRP packet attributes:To do… Use the command… Remarks1. Enter system view system-view —2. Enter the specified interfaceviewinterface interface-type interface-number —3. Configure the authenticationmode and authentication keywhen the VRRP groups sendand receive VRRP packetsvrrp vrid virtual-router-idauthentication-mode { md5 |simple } keyOptionalAuthentication is not performed bydefault
