PLANET XGS3-24042 - Manual (Page 1071)

60-10
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
60.2 circuit-failover
Commands:
circuit-failover {IFNAME | Vlan <ID>} <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 Backup
cannot changes its status due to lower priority than the Master when the Master fails.
Example:
Configuring VRRP monitor interface to vlan 2 and decreasing amount of priority to 10.
Switch(Config-Router-Vrrp)# circuit-failover vlan 2 10