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Configuring RMON
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 .
We recommend an additional, generic RMON console application on the network management station
Tip
(NMS) to take advantage of RMON's network management capabilities. Refer to the Cisco MDS 9000
Family Fabric Manager Configuration Guide.
Note
You must also configure SNMP on the switch to access RMON MIB objects.
RMON Alarm Configuration
You can set an alarm on any MIB object. The specified MIB must be an existing SNMP MIB object in
standard dot notation (1.3.6.1.2.1.2.2.1.14.16777216 for ifInOctets.16777216).
Use one of the following options to specify the interval to monitor the MIB variable (ranges from 1 to
4294967295 seconds):
•
•
•
The range for the rising threshold and falling threshold values is -2147483647 to 2147483647.
The falling threshold must be less than the rising threshold.
Caution
You can optionally specify the following parameters:
•
•
To enable RMON alarms, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# rmon alarm 20
1.3.6.1.2.1.2.2.1.14.16777216 2900 delta
rising-threshold 15 1 falling-threshold
0 owner test
switch(config)# no rmon alarm 2
Cisco MDS 9000 Family Configuration Guide
42-2
Use the delta option to test the change between samples of a MIB variable.
Use the absolute option to test each MIB variable directly.
Use the delta option to test any MIB objects that are counters.
The event-number to trigger if the rising or falling threshold exceeds the specified limit.
The owner of the alarm.
Purpose
Enters configuration mode.
Configures RMON alarm number 20 to monitor the
1.3.6.1.2.1.2.2.1.14.16777216 once every 900 seconds
until the alarm is disabled and checks the change in the
variable's rise or fall. If the value shows a MIB counter
increase of 15 or more, the software triggers an alarm.
The alarm in turn triggers event number 1, which is
configured with the RMON event command. Possible
events can include a log entry or an SNMP trap. If the
MIB value changes by 0, the alarm is reset and can be
triggered again.
Deletes the specified entry from the alarm table
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Chapter 42
Configuring RMON
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