Features With Multiple Option Links; Auto Failover - D-Link DWC-1000 User Manual
Wireless controller
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Wireless Controller
6.3
Features with Multiple Option Links
This controller supports multiple Option links. This allows you to take advantage of
failover and load balancing features to ensure certain internet dependent services are
prioritized in the event of unstable Option connectivity on one of the ports.
Setup > Internet Settings > Option Mode
To use Auto Failover or Load Balancing, Option link failure detection must be
configured. This involves accessing DNS servers on the internet or ping to an internet
address (user defined). If required, you can configure the number of retry attempts when
the link seems to be disconnected or the threshold of failures that determines if the
Option port is down.
6.3.1 Auto Failover
In this case one of your Option ports is assigned as the primary internet link for all
internet traffic. The secondary Option port is used for redundancy in case the primary
link goes down for any reason. Both Option ports (primary and secondary) must be
configured to connect to the respective ISP's before enabling this feature. The
secondary Option port will remain unconnected until a failure is detected on the
primary link (either port can be assigned as the primary). In the event of a failure on
the primary port, all internet traffic will be rolled over to the backup port. When
configured in Auto Failover mode, the link status of the primary Option port is
checked at regular intervals as defined by the failure detection settings.
Note that both Option1 and Option2 can be configured as the primary internet link.
Auto-Rollover using Option port
Primary Option: Selected Option is the primary link (Option1/ Option2)
Secondary Option: Selected Option is the secondary link.
Failover Detection Settings: To check connectivity of the primary internet link, one
of the following failure detection methods can be selected:
DNS lookup using Option DNS Servers: DNS Lookup of the DNS Servers
of the primary link are used to detect primary Option connectivity.
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