Hi Barret, The OID you wrote is the same i tried to use in my second post. The status of this OID is "Obsolete" with new firmwares. Anyway i found what i was looking for :  .1.3.6.1.4.1.674.10895.5000.2.6132.1.1.1.2.15.9.1.5.X It is not exactly the same but it is ok for me. Thanks for taking the time to answer.
Hello everyone, Which OID would give me the STP state for each interface? I'm able to find that information for old switchs with .1.3.6.1.2.1.17.2.15.1.3.X but i'm not able to do the same thing with my N2024P. Thanks.
OID for monitoring STP state of a Dell N2024P