Also, All SNMP MIBs for the APIC and the N9ks are available from:https://www.cisco.com/c/dam/en/us/td/docs/switches/datacenter/aci/apic/sw/1-x/mib/list/mib-support.html  

Hey mate, good idea to check your ACLs which you are using.  I'm using version 3.1 (2m), but it'd be pretty similar in your version.   There are 2 sections to configure your ACLs for this in; 1. Under the Fabric / Fabric Policies tab you'll find the ...