RMON is specified by RFCs from the IETF.
Basically, RMON 1 (RFC1757) extends an SNMP agent to record layer 2
statistics for a network segment. RMON 2 (RFC2021) provides similar
history, for layers 3 through 7 - again, for a network segment.
So, setting up RMON within an SNMP agent causes the agent to record
samples of various attributes of a segment. These values can be
periodically sampled for entry into a database, for trending and such.
Hope this helps.
Pierre-Alex wrote:
>
> Please pardon my ignorance.
>
> Why did Cisco invent RMON?
>
> SNMP seems to do exactly the same job (i.e. it provides information on all
> aspects of the network).
>
> I must be missing something ...
>
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