OID Prefix in OneClick Console shown with trailing .0

Products

• Spectrum

Issue/Introduction

CA Spectrum allows via MIB-Tools utility to load and extend the used "MIB"-database by importing additional Vendor- or self-created MIB-Sources.

Customer now sees, that after MIB-Source import and mapping the attributes in CA Spectrum the device models will show under device components Attribute-Tab the imported OID-values for "scalar" objects (non_table objects) are listed with a trailing ".0". This is not defined the same in the MIB-source. 

So is it correct that the CA Spectrum MIB-Tools import will automatically add the trailing ".0" to the OID Prefix for the Spectrum modeling attributes?

Environment

This applies to all supported CA Spectrum platforms and releases.

Resolution

This is a standard implementation detail to allow SNMP-get request for (any) scalar (non_table) objects.

In case of reading a "scalar object" from the Agent MIB (via SNMP) you must append ".0" to the OID-qualifier to read the value.

This is a common SNMP standard and not specific to CA Spectrum only.

In case the MIB-object is a table object then the trailing ".0" is not added which is then requiring additional logic for table read-offset (index).

Additional Information

Sample doc from the Web:  https://docstore.mik.ua/orelly/networking_2ndEd/snmp/appe_02.htm