I'm trying to set up cellular fail-over on the Meraki MX devices and I can't believe the ***tshow that this has become. Meraki's documentation is very clear - in order to use the cellular fail-over, a USB modem from the certified list must be used.
My suppliers have told me that all of the certified modems are EOL. Skydus DS is one of the modems on the list and Inseego had this comment:
"The Skyus DS platform is now EOL. ...the newer device is the Skyus DS2.... If connecting with a Meraki appliance, the DS2 will not work. Meraki has not / will not certify us on their platform any longer."
I opened a support case with Meraki and got the response that "Engineering is already working on adding more devices to the list of compatible USB modems." Timeframe? - Nope.
The support engineer, wanting to do something to help me, found some of the old modems on eBay. Points to the rep for wanting to help, but that Meraki engineering and product management let it get to this point is disgraceful.
Some of the devices I'm looking to add 4G failover to do have both Ethernet connections in use (same carrier for both circuits), and others don't. But I would like to set up cellular-specific rules and the MX has to know the circuit is cellular (e.g. be a supported USB modem) for that to be an option.
I'm guessing you're using the Verizon 730L with older MX devices as the compatibility list indicates support was dropped for MX deviecs released after 2017.
It's my general preference to prefer external modems. In theory, that makes it easier to upgrade the modem in the future.
I have to operate as if the Meraki list is accurate. It sounds like you might be thinking the list is out-of-date and that true modem support is really much larger. But I don't have any confidence that is the situation. All the evidence I've seen leads me to believe that support is as poor as the list indicates. That the USB ID needs to match means there's more going on than just Meraki officially testing the equipment. It indicates there is special code that activates only when the applicable USB IDs are detected, and the real problem is likely lack of engineering resources to write the code for the newer devices.
Although not listed, most Huawei modems work. I suspect this is because they mostly have the same interface. I would get one to try and verify it works fine for you.