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9-12 CHAPTER 9: STATUS MONITORING AND STATISTICS
A typical RMON setup consists of the following two components:
■ The RMON probe — An intelligent, remotely controlled device or
software agent that continually collects statistics about a LAN
segment or VLAN. The probe transfers the information to a
management workstation on request or when a predefined
threshold is crossed.
■ The management workstation — Communicates with the
RMON probe and collects the statistics from it. The workstation does
not have to be on the same network as the probe, and can manage
the probe by in-band or out-of-band connections.
About the RMON
Groups
The Switch 3800 supports the following four RMON groups:
■ Statistics
■ History
■ Alarms
■ Events
This section describes how to use each of these groups to monitor your
network.
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 can be used to detect changes in
traffic and error patterns in critical areas of the network.
History
The History group provides historical views of network performance by
taking periodic samples of the counters supplied by the Statistics group.
The group features user-defined sample intervals and bucket counters
for complete customization of trend analysis.
The group is useful for analysis of traffic patterns and trends on a LAN
segment or VLAN, and to establish baseline information indicating
normal operating parameters.
SW3800.BK Page 12 Tuesday, May 5, 1998 5:20 PM