Overview Of Rmon - 3Com corebuilder 3500 Implementation Manual

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Overview of RMON

RMON provides a way to monitor and analyze a local area network (LAN)

from a remote location. The Internet Engineering Task Force (IETF) defines

RMON-1 (RMON Version 1) in documents RFC 1271 and RFC 1757;

RFC 2021 defines the extension of RMON-1, RMON-2 (RMON Version 2).

A typical RMON implementation has two components:

Your system — Your system's built-in probe functionality examines all

the LAN traffic on its segments, and keeps a summary of statistics

(including historical data) in its local memory.

Management station — Communicates with your system and

collects the summarized data from it. The station can be on a different

network from the system and can manage the system's probe function

through either in-band or out-of-band connections.

The RMON specification consists almost entirely of the definition of the

MIB. The RMON MIB contains standard MIB variables that are defined to

collect comprehensive network statistics that alert you to significant

network events. If the embedded RMON agent operates full time, it

collects data on the correct port when the relevant network event occurs.