3Com WX3000 operation manual Displaying and Maintaining Rmon, Rmon Configuration Examples

Displaying and Maintaining RMON

To do…	Use the command…	Remarks
Display RMON statistics	display rmon statistics [ interface-type
	interface-number unit unit-number ]
Display RMON history	display rmon history [ interface-type
information	interface-number unit unit-number ]
Display RMON alarm	display rmon alarm [ entry-number]	Available in any view
information
Display extended RMON alarm	display rmon prialarm
information	[ prialarm-entry-number ]
Display RMON events	display rmon event [ event-entry]
Display RMON event logs	display rmon eventlog [ event-entry]

RMON Configuration Examples

Network requirements

z

z

As shown in Figure 2-1, the Switch to be tested is connected to a remote NMS through the Internet. Ensure that the SNMP agents are correctly configured before performing RMON configuration. Create an entry in the extended alarm table to monitor the information of statistics on the Ethernet port, if the change rate of which exceeds the set threshold, the alarm events will be triggered.

Figure 2-1Network diagram for RMON configuration

	Internet
Console port	Network port
Switch	NMS

Configuration procedures

# Add the statistics entry numbered 1 to take statistics on GigabitEthernet 1/0/1.

<device> system-view

[device] interface GigabitEthernet 1/0/1

[device-GigabitEthernet1/0/1] rmon statistics 1

[device-GigabitEthernet1/0/1] quit

#Add the event entries numbered 1 and 2 to the event table, which will be triggered by the following extended alarm.

[device] rmon event 1 log

[device] rmon event 2 trap 10.21.30.55

#Add an entry numbered 2 to the extended alarm table to allow the system to calculate the alarm variables with the (.1.3.6.1.2.1.16.1.1.1.9.1+.1.3.6.1.2.1.16.1.1.1.10.1) formula to get the numbers of all the oversize and undersize packets received by GigabitEthernet 1/0/1 that are in correct data format and sample it in every 10 seconds. When the change ratio between samples reaches the rising threshold of 50, event 1 is triggered; when the change ratio drops under the falling threshold, event 2 is triggered.

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