Backup internet provider

[Chad1]

We are currently having issues with our primary internet provider keeping the WAN circuit up.  We would like to add another internet provider as a backup.  We are using a Meraki mx250.  How do we set this up so the secondary WAN takes over if the primary goes down?

[jdsilva]

Just connect the second provider up to WAN2. It will automatically do what you ask, no config required.

You can tweak the settings if you need to under Security & SD-WAN > SD-WAN and traffic shaping.

https://documentation.meraki.com/MX/Firewall_and_Traffic_Shaping/SD-WAN_and_Traffic_Shaping

[Chad1]

We have done that but it only links up half the time and doesn’t ever show available. Possibly the SFP.

[jdsilva]

Yup, sounds like a Layer 1 problem if you have a link flapping. Try swapping the cable and/or the SFP. 

Are you using a copper or fibre link?  

[Chad1]

Copper

[jdsilva]

Does it only flap when connected to the MX? If you connect a laptop directly do you have the same problems? Or can you put a switch in between and it has the same problems?

If you have a supported SFP try that for sure too.

[Meraki_Fan_Man]

Not saying this is the solution to the issue you are having. But may help others who pass through.

Our backup link would go to sleep. We setup a monitor in WUG to keep it awake.