Help Needed: Monitoring Latency & Loss on Both WAN Links + Issues with MTR via SD-WAN Flow Preferenc

[neperic]

Hi everyone,

We're trying to set up alerts based on latency and packet loss for both WAN links in our Meraki setup. However, it looks like Meraki doesn’t offer built-in alerts specifically for these metrics.

As a workaround, we're planning to use Grafana or a similar tool to visualize latency/loss stats. To test this, we deployed two separate VMs:

• VM1: Routed all traffic through WAN1

• VM2: Routed all traffic through WAN2

We adjusted the SD-WAN flow preferences accordingly. While traceroute outputs look correct, we’re facing an issue with MTR tests—both VMs appear to send traffic through Meraki’s primary link, even when flow preferences are set differently.

Has anyone successfully set up monitoring per WAN link using external tools? Or can someone from Meraki clarify:

1. How we can accurately monitor latency/loss per WAN link,

2. Whether it's possible to generate alerts based on those metrics
   
   

Any guidance, best practices, or tool recommendations would be greatly appreciated.

Thanks in advance!

[Mloraditch]

You can monitor via the API https://developer.cisco.com/meraki/api-v1/get-device-loss-and-latency-history/

and then generate alerts your own way.

[RaphaelL]

You can set up alerts with Insight. But that requires a licence.

[PhilipDAth]

+1 to this.  I would use this option first before spending development time.  Note that it is called "Secure SD-WAN Plus" now.

https://documentation.meraki.com/General_Administration/Licensing/Meraki_MX_Security_and_SD-WAN_Lice...

You can read about the alerts here:

https://documentation.meraki.com/MI/Alert_Management_in_Meraki_Insight/Alerts_Management_Overview

[cmr]

ICMP traffic doesn't obey the preference, it goes out of the primary link as you've seen.  If you can monitor http response time then that should work.