On the system I'm working with, we have both Dell N4032 and Dell 2824 switches.
I'm using network management software to monitor these switches via SNMP. One of the features of the software I'm using is it detects the beginning and endpoints for the switch interfaces. It uses information from a few different common MIB tables, including the STP Port Table (dot1dstp, oid is 1.3.6.1.2.1.17.2.*). On the 2824 switch, I'm seeing all of the data in this table, but for the 4032 switch it returns an empty table when performing an SNMP walk. I've tried adding in the specific tables and even the unique OIDs in the switches SNMP->View settings, but still no luck.