3Com WX3000 operation manual Rmon Configuration

The statistics include the number of the following items: collisions, packets with cyclic redundancy check (CRC) errors, undersize (or oversize) packets, broadcast packets, multicast packets, and received bytes and packets.

With the RMON statistics management function, you can monitor the use of a port and make statistics on the errors occurred when the ports are being used.

RMON Configuration

Before performing RMON configuration, make sure the SNMP agents are correctly configured. For the information about SNMP agent configuration, refer to Configuring Basic SNMP Functions.

Follow these steps to configure RMON:

To do…	Use the command…	Remarks
Enter system view	system-view	—
	rmon event event-entry[ description
Add an event entry	string ] { log trap trap-community	Optional
	log-traplog-trapcommunity none }
	[ owner text ]
	rmon alarm entry-number	Optional
	alarm-variable sampling-time { delta	Before adding an alarm entry,
Add an alarm entry	absolute } rising_threshold	you need to use the rmon
	threshold-value1 event-entry1	event command to define the
	falling_threshold threshold-value2	event to be referenced by the
	event-entry2 [ owner text ]	alarm entry.
	rmon prialarm entry-number	Optional
	prialarm-formula prialarm-des	Before adding an extended
	sampling-timer { delta absolute
Add an extended alarm		alarm entry, you need to use
	changeratio } rising_threshold
		the rmon event command to
entry	threshold-value1 event-entry1
	falling_threshold threshold-value2	define the event to be
		referenced by the extended
	event-entry2entrytype { forever
		alarm entry.
	cycle cycle-period } [ owner text ]
Enter Ethernet port view	interface interface-type	—
	interface-number
	rmon history entry-numberbuckets
Add a history entry	number interval sampling-interval	Optional
	[ owner text ]
Add a statistics entry	rmon statistics entry-number[ owner	Optional
	text ]

z

z

The rmon alarm and rmon prialarm commands take effect on existing nodes only.

For each port, only one RMON statistics entry can be created. That is, if an RMON statistics entry is already created for a given port, you will fail to create another statistics entry with a different index for the same port.

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