OAM is a set of tools that have been used to provide network fault indication, performance information, fault localization, data and diagnosis functions.
In different standard bodies usage of OAM is slightly different thus it creates a confusion among the engineers.
IETF published a best practice RFC to clarify the OAM acronym. RFC 6291 ” Guidelines for the Use of the “OAM” Acronym in the IETF “.
Let’s take a look at How different standard bodies such as ITU-T, MEF and IEEE defines the OAM and then I will share IETF approach.