Traffic Flow Preferences and fail-over

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GaryShainberg
Building a reputation

Traffic Flow Preferences and fail-over

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

CTO & Solutioneer
CMNA, CMNO, ECMS2
SNSA, SNSP
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1 ACCEPTED SOLUTION
PhilipDAth
Kind of a big deal

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

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5 REPLIES 5
PhilipDAth
Kind of a big deal

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

Netwow
Building a reputation

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
Kind of a big deal

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
Building a reputation

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.

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

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