D-Link DFL-1100 Product Manual - Page 29

Interface Monitoring

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Now login to the slave firewall and click on System in the menu bar, and then click HA below it; in this screen you will click on Receive configuration from first unit. You will need to fill in the cluster id configured on the first unit. When you click Apply the unit should transfer the configuration from the first unit and you HA cluster should be operating. Interface Monitoring When HA is configured it's possible to configure something called Interface Monitoring, this is used to monitor up to 6 IP addresses on each segment (LAN/WAN or DMZ) of the DFL1100 cluster. If 50% of the listed addresses are unreachable for several seconds the active node will failover and the other unit will become active.

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Now login to the slave firewall and click on
System
in the menu bar, and then click
HA
below it; in this screen you will click on
Receive configuration from first unit
. You will need
to fill in the cluster id configured on the first unit. When you click
Apply
the unit should
transfer the configuration from the first unit and you HA cluster should be operating.
Interface Monitoring
When HA is configured it’s possible to configure something called Interface Monitoring,
this is used to monitor up to 6 IP addresses on each segment (LAN/WAN or DMZ) of the DFL-
1100 cluster. If 50% of the listed addresses are unreachable for several seconds the active
node will failover and the other unit will become active.