H3C SOHO IE4300, Command Reference Manual

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[Sysname] interface vlan-interface 10
[Sysname-Vlan-interface10] vrrp vrid 10 source-interface vlan-interface 20
vrrp vrid timer advertise
Use
vrrp vrid timer advertise
to set the interval at which the master in an IPv4 VRRP group
sends VRRP advertisements.
Use
undo vrrp vrid timer advertise
to restore the default.
Syntax
vrrp vrid virtual-router-id timer advertise adver-interval
undo vrrp vrid virtual-router-id timer advertise
Default
The master in an IPv4 VRRP group sends VRRP advertisements at an interval of 100 centiseconds.
Views
Interface view
Predefined user roles
network-admin
Parameters
virtual-router-id
: Specifies an IPv4 VRRP group by its virtual router ID. The value range for
the
virtual-router-id
argument is 1 to 255.
adver-interval
: Specifies an interval for the master in the specified IPv4 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 configured value for the
adver-interval
argument takes effect.
Usage guidelines
The master in an IPv4 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.
As a best practice to maintain system stability, set the VRRP advertisement interval to be greater
than 100 centiseconds.
In VRRPv2, all routers in an IPv4 VRRP group must have the same interval for sending VRRP
advertisements.
In VRRPv3, the routers in an IPv4 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 any VRRP
advertisement when the timer (3 × recorded in Skew_Time) expires, it regards the master as
failed and takes over.
Large network traffic might disable a backup from receiving VRRP advertisements from the master
within the specified timer and trigger an unexpected master switchover. To solve this problem, you
can use this command to set a larger interval.
Examples
# Configure the master in IPv4 VRRP group 1 to send VRRP advertisements at an interval of 500
centiseconds.