Traffic Flow Preferences and fail-over

[GaryShainberg]

Not sure if anyone can answer this but on an MX xx

If I have 1 ISP on WAN1 and second ISP on WAN2

I have a flow preference that sends the traffic for 192.168.50.0/24 through WAN2 so the rest of the network traffic will route via WAN1.

What happens if I lose connectivity to WAN1, will all the network traffic now route through WAN2 as the failover ?

Any thoughts would be appreciated.

Thanks

Gary

[PhilipDAth · Accepted solution]

Correct, if WAN1 fails all traffic will now flow out WAN2.

[Netwow]

Having an issue with 4 minute failover for my WAN 2 on MX100. Call support . They tell me it can take up to 5 minutes. failover kicks in at 2 minutes which is tooooo long

[PhilipDAth]

If you have an interface simply go down it is quite quick.  But if the interface remains up because you have an upstream failure it can take a while.

This document lists the tests which are done:

https://documentation.meraki.com/MX/Firewall_and_Traffic_Shaping/Connection_Monitoring_for_WAN_Failo...

[Netwow]

Called into support last night..... they were able to change the timeout to 30 seconds on WAN2 on my primary and secondary MX. SOOOOO HAPPY! New backend feature.

[whistleblower]

... and what happens when Traffic is explicit configured to use WAN-2 and this link fails - will that traffic also move to WAN-1?