Rmon; What Is Rmon; The Rmon Groups - 3Com 3C17205-US - Corp SUPERSTACK 3 SWITCH 4400 24PORT Implementation Manual

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HAPTER TATUS

RMON

What is RMON?

The RMON Groups

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ONITORING AND TATISTICS
Roving analysis is not supported:
across a stack of Switch 4400 units.
in a single Switch 4400 (48-port) unit within a stack of Switch 4400
units, or across a stack of Switch 4400 units.
Using the RMON capabilities of a Switch allows you to improve your
network efficiency and reduce the load on your network.
This section explains more about RMON. It covers the following topics:
What is RMON?
Benefits of RMON
RMON and the Switch
RMON is a system defined by the IETF (Internet Engineering Task Force)
that allows you to monitor the traffic of LANs or VLANs.
RMON is an integrated part of the Switch software agent and continually
collects statistics about a LAN segment or VLAN, and transfers the
information to a management workstation on request or when a
pre-defined threshold is crossed. The workstation does not have to be on
the same network as the Switch and can manage the Switch by in-band
or out-of-band connections.
The IETF define groups of Ethernet RMON statistics. This section describes
the four groups supported by the Switch 4400 Series, and details how
you can use them.
Statistics
The Statistics group provides traffic and error statistics showing packets,
bytes, broadcasts, multicasts and errors on a LAN segment or VLAN.
Information from the Statistics group is used to detect changes in traffic
and error patterns in critical areas of your network.
History
The History group provides historical views of network performance by
taking periodic samples of the counters supplied by the Statistics group.