D-Link DWC-1000

D-Link DWC-1000 User Manual 162
Section 5 - Advanced Network Conguration
Auto-Rollover using Option Port
In this mode one of your Option ports is assigned as the primary Internet link for all Internet trac and 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 congured 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 trac will be rolled
over to the backup port. When congured in Auto-Failover mode, the link status of the primary Option port is
checked at regular intervals as dened by the failure detection settings.
1. Click Network > Internet (IPv4) > Option Mode.
Field Description
Option Mode Select Auto-Rollover Using Option Port from the drop-down menu.
Use Primary Option
Port
Select which Option port is the primary.
Use Secondary Op-
tion Port
Select which port to use if the primary port fails.
DNS Lookup Method
• Option DNS Servers: DNS Lookup of the DNS Servers of the primary link is used to detect
primary Option connectivity.
• DNS Servers: DNS Lookup of the custom DNS Servers can be specied to check the connectivity
of the primary link.
• Ping these IP addresses: These IP’s will be pinged at regular intervals to check the connectivity
of the primary link.
Option 1/Option 2 Enter the DNS server or IP address to ping.
Retry Interval
Enter the time in seconds to initiate the Option health check. Default is every 30 seconds. The
number tells the controller how often it should run the above congured failure detection
method.
Failover After Enter the number of failures before the controller initiates the failover process.
2. Complete the elds from the table below, and click Save.