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Configuring Vigor2920 or Vigor2830 for WAN Failover
Posted by on 15 February 2012 11:07 AM

Question:

 

We have a 2920n.

Basically what we want to achieve is a failover order of:

Wan 2  (Primary WAN)
Wan 1 (Backup WAN #1)
Wan 3 (Backup WAN #2)

So when Wan 2 disconnects it tries to use Wan 1 and if it can't get Wan 1 then it uses Wan 3.

Solution:

Set up Wan 1 and Wan 2 to be Always On (with Wan 3 listed at the Backup Wan for each).
Set Wan 3 to be a backup Wan with "When all WANS disconnect".

Then set up a load balancing rule that says all traffic use WAN 2 and also enabled (ticked) "failover to use other wans" in the rule.

So now traffic gets routed using wan 2 but if the fails the load balancing rule then uses the other available WANs.

Then if both Wan 1 and 2 disconnect then WAN 3 connects.

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