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multiple WAN interfaces and failover rules when 3 or more WAN interfaces

JLO

Say we have 3 WAN interfaces WAN1, WAN2 & WAN3 - WAN1 is the first choice and WAN3 last preferred WAN interface.
(1) Is it possible to specify more than one backup - and if so can I specify the order of activation

(2) if not, how best configure the WAN interfaces to best match our order of choice

(3) same question again if I add an extra WAN interface (say WAN4)

Could you please indicate the relevant KB, manual, ...

Thanks
JL



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  • 0

    Hi,

    Most of my customers uses the primary gateway in a rule for a specific interface and the backup interface, they use "WAN Loadbalancing". So basically most of the time, if WAN1 fails, the traffic will be load balancing over WAN2/WAN3 - depending on the Load balancing settings.

    WAN1 is the "strongest" connections. And with MR3, you can failback to the WAN1 connection, if this fails. 

    Additionally to say, if WAN2 in this scenario fails, WAN3 will take place of course. So you can configure WAN2 as 95% and WAN3 as 5% to have the (worst) case covered, WAN1 and WAN2 fails at the same time. 

    Here are some rules about this: https://community.sophos.com/kb/en-us/123530

Reply
  • 0

    Hi,

    Most of my customers uses the primary gateway in a rule for a specific interface and the backup interface, they use "WAN Loadbalancing". So basically most of the time, if WAN1 fails, the traffic will be load balancing over WAN2/WAN3 - depending on the Load balancing settings.

    WAN1 is the "strongest" connections. And with MR3, you can failback to the WAN1 connection, if this fails. 

    Additionally to say, if WAN2 in this scenario fails, WAN3 will take place of course. So you can configure WAN2 as 95% and WAN3 as 5% to have the (worst) case covered, WAN1 and WAN2 fails at the same time. 

    Here are some rules about this: https://community.sophos.com/kb/en-us/123530

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  • 0 in reply to LuCar Toni

    Hi

    If I understand correctly you have 2 WAN backup interfaces (WAN2 & WAN3) - can you have more than one backup and set up load balancing in that (backup) group?

    Also, if I have 4 WANs, could I group WAN1/WAN2 (with load balancing rule), and if both loose connectivity fail over onto WAN3/WAN4 (different load balancing rule to apply here)?

    Thanks
    JL

    PS : I wish we could have more management choice other than Active or backup (ie set up a picking order based on availability and/or bandwidth availability)