Configure Vrrp Timer; Configure Switch To Track A Specified Interface - Huawei Quidway S3500 Series Operation Manual

Operation Manual - Reliability
Quidway S3500 Series Ethernet Switches

1.2.7 Configure VRRP Timer

The Master switch advertises its normal operation state to the switches within the
VRRP virtual router by sending them VRRP packets regularly (at adver-interval). If the
Backup has not received any VRRP packet from the Master after a period of time
(specified by master-down-interval), it will consider the Master as down. It will then take
his place and become the Master.
You can use the following command to set a timer and adjust the interval, adver-interval,
between Master transmits VRRP packets. The master-down-interval of the BACKUP
switch is three times that of the adver-interval. The excessive network traffic or the
differences between different switch timers will result in master-down-interval timing out
and state changing abnormally. Such problems can be solved through prolonging the
adver-interval and setting delay time. adver-interval is measured in seconds.
Perform the following configuration in VLAN interface view.
Table 1-7 Configure VRRP timer
Configure VRRP timer
Clear VRRP timer
By default, adver-interval is configured to be 3.

1.2.8 Configure Switch to Track a Specified Interface

VRRP interface track function has expanded the backup function. Backup is provided
not only to the interface where the virtual router resides, but also to some other
malfunctioning switch interface. By implementing the following command you can track
some interface. If the interface which is tracked is DOWN, the priority of the switch
including the interface will reduce automatically by the value specified by
value-reduced, thus resulting in comparatively higher priorities of other switches within
the virtual router, one of which will turn to Master switch so as to track this interface.
Perform the following configuration in VLAN interface view.
Table 1-8 Configure Switch to Track a Specified Interface
Configure to track a specified
interface
Stop tracking the specified
interface
Operation
Operation
Huawei Technologies Proprietary
Command
vrrp vrid virtual-router-ID
adver-interval
undo vrrp vrid virtual-router-ID timer advertise
Command
vrrp vrid virtual-router-ID track vlan-interface
interface-num [ reduced value-reduced ]
undo vrrp vrid
[ vlan-interface interface-num ]
1-7
Chapter 1 VRRP Configuration
timer advertise
virtual-router-ID track