Sources for this description
Multiple manufacturers; see the original MIB MIB copies (LibreNMS/Observium Community)MIBdepotNetdisco MIB archive copies
MIBdepot
Source file: Download Sentry3_serverTech_1st.mib.txt
Source file: Download Sentry3_No_BITS.mib.txt
Source file: Download Sentry3.mib.txt