Configuring Rmon; About Rmon; Configuring Rmon Using Threshold Manager - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m

Configuring RMON

RMON is an Internet Engineering Task Force (IETF) standard monitoring specification that allows
various network agents and console systems to exchange network monitoring data. You can use the
RMON alarms and events to monitor Cisco MDS 9000 Family switches running the Cisco SAN-OS
Release 2.0(1b) or later or Cisco NX-OS 4.1(3a) software.
This chapter includes the following sections:
•
•
•

About RMON

All switches in the Cisco MDS 9000 Family support the following RMON functions (defined in RFC
2819):
•
•
For agent and management information, see the Cisco MDS 9000 Family MIB Quick Reference.
For SNMP security-related CLI configurations, see the

Configuring RMON Using Threshold Manager

RMON is disabled by default and no events or alarms are configured in the switch. You can configure
your RMON alarms and events by using the CLI or by using Threshold Manager in Device Manager.
The Threshold Monitor allows you to trigger an SNMP event or log a message when the selected statistic
goes over a configured threshold value. RMON calls this a rising alarm threshold. The configurable
settings are as follows:
•
OL-17256-03, Cisco MDS NX-OS Release 4.x
About RMON, page 59-1
Configuring RMON Using Threshold Manager, page 59-1
Default Settings, page 59-16
Alarm—Each alarm monitors a specific management information base (MIB) object for a specified
interval. When the MIB object value exceedes a specified value (rising threshold), the alarm
condition is set and only one event is triggered regardless of how long the condition exists. When
the MIB object value falls below a certain value (falling threshold), the alarm condition is cleared.
This allows the alarm to trigger again when the rising threshold is crossed again.
Event—Determines the action to take when an event is triggered by an alarm. The action can be to
generate a log entry, an SNMP trap, or both.
Variable—The statistic you want to set the threshold value on.
C H A P T E R
"About SNMP Security" section on page 40-1
Cisco MDS 9000 Family Fabric Manager Configuration Guide
59
59-1