How to configure multiple ISP uplinks with link failover using High Availability (HA) method

Senario:

User required high network availability for mission critical systems and subscribed to 3 ISPs: SingTel, Starhub fibre connection and M1 4G. User also required device to have High Availability (HA) setup. User used SingTel as Primary connection, in the event SingTel uplink is down, the firewall will failover to 2nd device and Starhub connection. Only when SingTel/1st device is up, it will take over the connection from Starhub. If Starhub is also down resulted in multiple uplinks failure, M1 4G will take over.

 

 

Setup:

In the proposed setup, Vigor2926 and Vigor2926L are used in the network implementation. Vigor2926 Series provides reliable broadband connectivity with the multi-WAN accesses. The two Gigabit Ethernet WAN ports can be operated in failover or load balancing mode to ensure a steady Internet connection. 2926L also equipped with 4G modem built in to add additional Internet access over 3G/4G connection.

Vigor2926 Series also covers comprehensive functions, including VLAN, Bandwidth Management, Quality of Service, DNS Control, SPI Firewall, Web Content Filtering, and Central Management solutions to provide a reliable and secure business network.

In the case, SingTel is configured to WAN1 on Vigor2926, Starhub on Vigor2926L to WAN2 and M1 sim card is inserted to the simcard slot.

WAN1 (Vigor2926)-> Failover -> WAN2 (Vigor2926L) -> Failover -> 4G LTE (Vigor2926L)

Let us know if you nee more information on the implementation. If you have other requirements, let us know.