R211x-HP Flexfabric 11900 High Availability Command Reference

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Parameters
virtual-router-id: Specifies an IPv6 VRRP group by its virtual router ID in the range of 1 to 255.
adver-interval: Specifies an interval for the master in the specified IPv6 VRRP group to send VRRP
advertisements. The value range for this argument is 10 to 4095 centiseconds. For VRRPv2, the value of
the adver-interval argument can only be a multiple of 100. For example, if you configure values in the
range of 10 to 100, 101 to 200, and 4001 to 4095, the actual values are 100, 200, and 4100,
respectively. For VRRPv3, the value of the adver-interval argument that you configured takes effect.
Usage guidelines
The master in an IPv6 VRRP group periodically sends VRRP advertisements to declare its presence. You
can use this command to configure the interval at which the master sends VRRP advertisements.
HP recommends setting the VRRP advertisement interval to be greater than 100 centiseconds to maintain
system stability.
The routers in an IPv6 VRRP group can have different intervals for sending VRRP advertisements. The
master in the VRRP group sends VRRP advertisements at the specified interval and carries the interval
attribute in the advertisements. After a backup receives the advertisement, it records the interval in the
advertisement. If the backup does not receive a new VRRP advertisement from the master when the timer
(3 × VRRP advertisement sending interval + Skew_Time) expires, it regards the master as failed and takes
over as the master.
Large network traffic might disable a backup from receiving VRRP advertisements from the master within
the specified time and trigger an unexpected master switchover. To solve this problem, you can use this
command to configure a larger interval.
Examples
# Configure the master in IPv6 VRRP group 1 to send VRRP advertisements at an interval of 500
centiseconds.
<Sysname> system-view
[Sysname] interface vlan-interface 2
[Sysname-Vlan-interface2] vrrp ipv6 vrid 1 timer advertise 500
Related commands
display vrrp ipv6
vrrp ipv6 vrid track
Use vrrp ipv6 vrid track to associate an IPv6 VRRP group with a track entry and control master switchover
in the VRRP group in response to changes (such as uplink state changes) detected by the track entry.
Use undo vrrp ipv6 vrid track to remove the association between an IPv6 VRRP group and a track entry.
If no track entry is specified, the association between the VRRP group and any track entry is removed.
Syntax
vrrp ipv6 vrid virtual-router-id track track-entry-number [ reduced priority-reduced | switchover ]
undo vrrp ipv6 vrid virtual-router-id track [ track-entry-number ]
Default
An IPv6 VRRP group is not associated with any track entry.
Views
Interface view