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Catalyst 3750 Metro Switch Software Configuration Guide
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Chapter 22 Configuring RMON
Configuring RMON
Figure 22-1 Remote Monitoring Example
The switch supports these RMON groups (defined in RFC 1757):
• Statistics (RMON group 1)—Collects Ethernet, Fast Ethernet, and Gigabit Ethernet statistics on a
port.
• History (RMON group 2)—Collects a history group of statistics on Ethernet, Fast Ethernet, and
Gigabit Ethernet ports for a specified polling interval.
• 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)—Specifies 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 this software release use hardware counters for RMON data processing,
the monitoring is more efficient, and little processing power is required.
Configuring RMON
These sections describe how to configure RMON on your switch:
• Default RMON Configuration, page 22-3
• Configuring RMON Alarms and Events, page 22-3 (required)
• Collecting Group History Statistics on an Interface, page 22-5 (optional)
• Collecting Group Ethernet Statistics on an Interface, page 22-6 (optional)
101233
RMON alarms and events
configured. SNMP configured.
RMON history
and statistic
collection enabled.
Workstations
Workstations
Network management station with
generic RMON console application
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