Advertisement-Interval; Circuit-Failover - Accton Technology ES4710BD User Manual

Switch(Config-Router-Vrrp)# priority 150
21.1.2.10

advertisement-interval

Commands: advertisement-interval <adver_interval>
no advertisement-interval
Function: Sets the vrrp timer values; the "no advertisement-interval" command restores the
default setting.
Parameters: <adver_interva> is the interval for sending VRRP packets in seconds, ranging from 1
to 10.
Default: The default <adver_interva> is 1second.
Command mode: VRRP protocol configuration mode
Usage Guide: The Master in a VRRP Standby cluster will send VRRP packets to member routers
(or L3 Ethernet switch) to announce its properness at a specific interval, this interval is referred to as
adver_interval. If a Backup does not receive the VRRP packets sent by the Master after a certain
period (specified by master_down_interval), then it assume the Master is no longer operating
properly, therefore turns its status to Master.
The user can use this command to adjust the VRRP packet sending interval of the Master. For
members in the same Standby cluster, this property should be set to a same value. To Backup, the
value of master_down_interval is three times that of adver_interval. Extraordinary large traffic or
timer setting differences between routers (or L3 Ethernet switches) may result in
master_down_interval and invoke instant status changes. Such situations can be avoided through
extending adver_interval interval and setting longer preemptive delay time.
Example: Configuring vrrp Timer value to 3
Switch(Config-Router-Vrrp)# advertisement-interval 3
21.1.2.11

circuit-failover

Commands: circuit-failover <ifname> <value_reduced>
no circuit-failover
Function: Configures the vrrp monitor interface
Parameters: < ifname > is the name for the interface to be monitored
<value_reduced> stands for the amount of priority decreased, the default value is 1~253
Default: Not configured by default.
Command mode: VRRP protocol configuration mode
Usage Guide: The interface monitor function is a valuable extension to backup function, which not
only enable VRRP to provide failover function on router ( or L3 Ethernet switch) fail, but also allow
decreasing the priority of a router ( or L3 Ethernet switch) to ensure smooth implementation of backup
function when status of that network interface is down.
When this command is used, if the status of an interface monitored turns from up to down,
then the priority of that very router ( or L3 Ethernet switch) in its Standby cluster will decrease, lest
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