3Com S7906E Configuration Manual page 2096

You can configure the VF tracking function when VRRP works in either the standard protocol mode
or the load balancing mode; however, the VF tracking function is effective only when VRRP works
in the load balancing 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
always 255 and does not change with the weight value. Therefore, in case of an uplink failure, only
when the weight of the VF owner decreases a properly specified value and becomes lower than the
lower limit of failure, can another VF takes over the VF owner's work and becomes the AVF.
Configuring VRRP Packet Attributes
Configuration prerequisites
Before configuring the relevant attributes of VRRP packets, you should first create a VRRP group and
configure a virtual IPv6 address.
Configuration procedure
Follow these steps to configure VRRP packet attributes:
To do...
Enter system view
Enter the specified interface
view
Configure the authentication
mode and authentication key
when the VRRP groups send or
receive VRRP packets
Configure the time interval for
the Master in the VRRP group
to send VRRP advertisement
You may configure different authentication modes and authentication keys for the VRRP groups on an
interface. However, the members of the same VRRP group must use the same authentication mode
and authentication key.
Excessive traffic or different timer setting on routers can cause the Backup timer to time out abnormally
and change the state. To solve this problem, you can prolong the time interval to send VRRP packets.
Displaying and Maintaining VRRP for IPv6
To do...
Display VRRP group status
Use the command...
system-view
interface interface-type
interface-number
vrrp ipv6 vrid virtual-router-id
authentication-mode simple
key
vrrp ipv6 vrid virtual-router-id
timer advertise adver-interval
Use the command...
display vrrp ipv6 [ verbose ] [ interface
interface-type interface-number [ vrid
virtual-router-id ] ]
1-23
Remarks
—
—
Optional
Authentication is not performed
by default.
Optional
100 centiseconds by default
Remarks
Available in any view