3Com 3C17300A Implementation Guide - Page 58

Statistics, History, Alarms, Events, Email, Notification of Events, - let me watch this

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Page 58 highlights

58 CHAPTER 7: STATUS MONITORING AND STATISTICS Statistics The Statistics group provides traffic and error statistics showing packets, bytes, broadcasts, multicasts and errors on a LAN segment. 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. The group is useful for analyzing the traffic patterns and trends on a LAN segment, and for establishing the normal operating parameters of your network. Alarms The Alarms group provides a mechanism for setting thresholds and sampling intervals to generate events on any RMON variable. Alarms are used to inform you of network performance problems and they can trigger automated responses through the Events group. Events The Events group provides you with the ability to create entries in an event log and send SNMP traps to the management workstation. Events are the action that can result from an RMON alarm. In addition to the standard five traps required by SNMP (link up, link down, warm start, cold start, and authentication failure), RMON adds two more: rising threshold and falling threshold. Effective use of the Events group saves you time; rather than having to watch real-time graphs for important occurrences, you can depend on the Event group for notification. Through the SNMP traps, events can trigger other actions, therefore providing a way to automatically respond to certain occurrences. Certain Events can also generate automatic emails. See "Email Notification of Events" on page 62.

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58
C
HAPTER
7: S
TATUS
M
ONITORING
AND
S
TATISTICS
Statistics
The Statistics group provides traffic and error statistics showing packets,
bytes, broadcasts, multicasts and errors on a LAN segment.
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.
The group is useful for analyzing the traffic patterns and trends on a LAN
segment, and for establishing the normal operating parameters of your
network.
Alarms
The Alarms group provides a mechanism for setting thresholds and
sampling intervals to generate events on any RMON variable.
Alarms are used to inform you of network performance problems and
they can trigger automated responses through the Events group.
Events
The Events group provides you with the ability to create entries in an
event log and send SNMP traps to the management workstation. Events
are the action that can result from an RMON alarm. In addition to the
standard five traps required by SNMP (link up, link down, warm start, cold
start, and authentication failure), RMON adds two more: rising threshold
and falling threshold.
Effective use of the Events group saves you time; rather than having to
watch real-time graphs for important occurrences, you can depend on
the Event group for notification. Through the SNMP traps, events can
trigger other actions, therefore providing a way to automatically respond
to certain occurrences.
Certain Events can also generate automatic emails. See
“Email
Notification of Events”
on
page 62
.