Cisco Catalyst 4500 Series, Software Configuration Manual

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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 79 Configuring RMON
Configuring RMON
•
Alarm (RMON group 3)—Monitors a specific MIB object for a specified interval, triggers an alarm
at a specified value (rising threshold), and resets the alarm at another value (falling threshold).
Alarms can be used with events; the alarm triggers an event, which can generate a log entry or an
SNMP trap.
• Event (RMON group 9)—Determines the action to take when an event is triggered by an alarm. The
action can be to generate a log entry or an SNMP trap.
Because switches supported by Cisco IOS Release 12.2(31)SG use hardware counters for RMON data
processing, the monitoring is more efficient, and little processing power is required.
Configuring RMON
This section describes how to configure RMON on your switch. It contains this configuration
information:
• Default RMON Configuration, page 79-3
•
Configuring RMON Alarms and Events, page 79-3
• Configuring RMON Collection on an Interface, page 79-5
Default RMON Configuration
RMON is disabled by default; no alarms or events are configured.
Only RMON 1 is supported on the switch.
Configuring RMON Alarms and Events
You can configure your switch for RMON by using the command-line interface (CLI) or an
SNMP-compatible network management station. We recommend that you use a generic RMON console
application on the network management station (NMS) to take advantage of RMON’s network
management capabilities. You must also configure SNMP on the switch to access RMON MIB objects.
For more information, see
Chapter 72, “Configuring SNMP.”