The TMN model suffers from modern network anxiety
As the TMN diagram below describes, each layer up in the network management stack abstracts but connects (as described in more detail in “What an OSS shouldn’t do“). That is, each higher layer reduces the amount if information/control within a domain that it’s responsible for, but it assumes a broader responsibility for connecting multiple domains together. There's just one problem with the diagram. It's a little dated when we take…
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