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vrrp vrid
virtual-router-id
timer
advertise
advertise-interval
An interval at which unicast VRRP Advertisement packets are sent is configured.
The default interval is 1 second.
Step 7
(Optional) Run:
vrrp vrid
virtual-router-id
preempt-mode
timer
delay
delay-value
A preemption delay is set for the device in the unicast VRRP backup group.
The default delay is 0 seconds, indicating immediate preemption. In immediate preemption
mode, if the backup device finds that its priority is higher than the master device's priority, the
backup device immediately preempts the Master state. The original master device becomes the
backup device accordingly.
NOTE
Set the preemption delay to 0 on the backup device to allow it to become the master device immediately
after its priority changes, or set the preemption delay to a non-0 value on the master device so that it can
preempt the Master state after a specified delay if a master/backup VRRP switchover is performed. These
settings allow a period of time for status synchronization between the user-to-network and network-to-user
links on devices on an unstable network. This prevents the situation in which user devices learn an incorrect
master device IP address when two master devices coexist or master/backup VRRP switchovers are
performed frequently.
----End
Follow-up Procedure
After creating a unicast VRRP backup group, perform the following operations to implement
rapid master/backup VRRP switchovers to further improve network reliability:
l
Associate the unicast VRRP backup group with a VRRP-disabled interface.
1.
Run the
system-view
command to enter the system view.
2.
Run the
interface loopback
loopback-number
command to enter the view of the
interface on which the unicast VRRP backup group is configured.
3.
Run the
vrrp vrid
virtual-router-id
track
interface
interface-type
interface-
number
[
increased
value-increased
|
reduced
value-reduced
] command to associate
the unicast VRRP backup group with a specified VRRP-disabled interface.
l
Associate the unicast VRRP backup group with an interface monitoring group.
1.
Run the
system-view
command to enter the system view.
2.
Run the
interface loopback
loopback-number
command to enter the view of the
interface on which the unicast VRRP backup group is configured.
3.
Run the
vrrp vrid
virtual-router-id
track
monitor-group
monitor-group-name
failure-ratio
failure-ratio-value
{ [
reduced
reduced-value
] |
link
} command to
associate the unicast VRRP backup group with an interface monitoring group. When
the link failure ratio on the access or network side reaches a specified threshold, the
unicast VRRP backup group performs a master/backup switchover.
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
4 VRRP Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
153