• Router,DrayOS 4

How to configure WAN Backup or Failover

X. WAN

Products:
Vigor 2135ax
Vigor 2620Ln
Vigor 2760
Vigor 2762
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Keywords:
active mode
active when
backup
failback
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This document explains how to setup WAN failover or load balance based on policies in a DrayTek Router.

There may be occasions when the internet connection from your router may drop. As a result you may experience connection outage and disruption to the normal internet connectivity service from your business or home.

On most DrayTek routers, you can add a secondary Internet connection and configure how and when it should failover. If the primary WAN experiences a disconnection, the backup connection will take over and resume continuity of your Internet service.

Through failover, you can configure the router to keep a WAN in Failover mode (idle) until the main WAN link disconnects. For example, when WAN 2 disconnects, WAN1 will become active and the traffic will be routed via WAN1 to the internet.

The instructions below will help you configure the WAN Failover:

Navigate to [WAN] > [General Setup]

-Click on WAN1 index

-Set the Active Mode to Failover

-Select WAN 2 as the WAN that it's backing up with the "Active When" tickboxes

Click OK to save and apply the change. Now if WAN2 disconnects, the WAN1 connection will become active to re-establish connectivity.

 W1backupW2

Through route policies, both WAN interfaces can be active but only one will be in use, with the other ready to route traffic if the main connection drops.

In this example, WAN1 is the main connection and WAN2 is the backup connection, which could be sitting idle or utilised through additional route policies, for instance maybe VoIP calls route through WAN2.

Normally, traffic will be routed through WAN1 with this Route Policy setting. If WAN1 drops, the route policy will switch to the backup Interface. Traffic will only be routed out via WAN2 if the WAN1 connection isn't available.

Follow the setup guide below:

-Navigate to [Routing] > [Load-Balance/Route Policy]

-Open any available index for configuration (In this example we'll use Index 1) and configure it like in the image below:

    • The "Failover To" setting defines the connection that's used to back up the Internet connection. In this example, WAN2 is the backup connection.
    • The "Failback" setting defines how quickly connections are moved back to the main connection when it's restored. When ticked, all sessions going through WAN2 are dropped when WAN1 reconnects, so that clients can resume using the WAN1 interface.

W1backupW2RP

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