HP 4800G Series Configuration Manual page 1464

To do...
Configure the router in the
VRRP group to work in
preemptive mode and
configure preemption delay of
the VRRP group
Configure the interface to be
tracked
The running priority of an IP address owner is always 255 and you do not need to configure it. An IP
address owner always works in the preemptive mode.
Interface tracking is not configurable on an IP address owner.
If the state of the interface under tracking changes from down to up, the priority of the device
corresponding to the interface is restored automatically.
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
and configure a preemption delay.
Use the command...
vrrp ipv6 vrid virtual-router-id
preempt-mode [ timer delay
delay-value ]
vrrp ipv6 vrid virtual-router-id
track interface interface-type
interface-number [ reduced
priority-reduced ]
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
1-16
Remarks
Optional
The router in the VRRP group
works in preemptive mode and
the preemption delay is zero
seconds by default.
Optional
No interface is being tracked by
default.
Remarks
—
—
Optional
Authentication is not performed
by default
Optional
100 centiseconds by default