Beginning with Meraki MX68's, it seems NPM isn't discovering / monitoring the correct ports. Port 1 (a.k.a.: Internet 1) is not being discovered by NPM (we're using NAM Platform 2019.4 and HF 3). And when we select Port 12 for monitoring, NPM displays Port 11. Port 12 is not displayed at all.
My guess is that Meraki has updated the MIB to include one or more new OID's that are specific to the MX68's.
If you believe you have a fix or a workaround for this issue, please let me know.
Swift packets!
Rick Schroeder