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Cisco ME 3800X and 3600X Switch Software Configuration Guide
OL-23400-01
Chapter 23 Configuring RMON
Configuring RMON
To disable an alarm, use the no rmon alarm number global configuration command on each alarm you
configured. You cannot disable at once all the alarms that you configured. To disable an event, use the
no rmon event number global configuration command. To learn more about alarms and events and how
they interact with each other, see RFC 1757.
You can set an alarm on any MIB object. The following example configures RMON alarm number 10 by
using the rmon alarm command. The alarm monitors the MIB variable ifEntry.20.1 once every 20
seconds until the alarm is disabled and checks the change in the variable’s rise or fall. If the ifEntry.20.1
value shows a MIB counter increase of 15 or more, such as from 100000 to 100015, the alarm is
triggered. 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 ifEntry.20.1 value changes
by 0, the alarm is reset and can be triggered again.
Switch(config)#
rmon alarm 10 ifEntry.20.1 20 delta rising-threshold 15 1
falling-threshold 0 owner jjohnson
The following example creates RMON event number 1 by using the rmon event command. The event is
defined as High ifOutErrors and generates a log entry when the event is triggered by the alarm. The user
jjones owns the row that is created in the event table by this command. This example also generates an
SNMP trap when the event is triggered.
Switch(config)#
rmon event 1 log trap eventtrap description "High ifOutErrors" owner
jjones
Step 3
rmon event number [description string] [log]
[owner string] [trap community]
Add an event in the RMON event table that is associated with an
RMON event number.
•
For number, assign an event number. The range is 1 to
65535.
•
(Optional) For description string, specify a description of
the event.
•
(Optional) Use the log keyword to generate an RMON log
entry when the event is triggered.
•
(Optional) For owner string, specify the owner of this event.
•
(Optional) For trap community, enter the SNMP community
string used for this trap.
Step 4
end
Return to privileged EXEC mode.
Step 5
show running-config
Verify your entries.
Step 6
copy running-config startup-config
(Optional) Save your entries in the configuration file.
Command
Purpose
