HP Network Direr Software Products This section describes some Rmon examples supported by 3Com

450CHAPTER 10: RMON

Table creation or deletion may fail if:

■an incorrect community string is used

■there are insufficient resources on the target device to create a table

You should try to delete RMON tables from a device when you no longer require them. RMON tables take up resources on network devices, and may affect the device's performance.

Be careful not to delete tables that you yourself did not create - they may be in use by 3Com Network Director, or by another management application on your network.

Examples	This section describes some RMON examples supported by 3Com
	Network Director.

How do I graph errors The RMON Statistics group contains useful error counters for interfaces on my core switch on devices that support this table. The RMON history group contains the

links? same values stored historically for predefined sampling periods. The RMON host and matrix groups allow you to see the same data broken down by specific hosts on the network.

If you know which interface on your core switch you are interested in, launch RMON directly from the device icon on the 3Com Network Director map. Alternatively, launch it from the right-click menu of an attached link.

Launch your chosen RMON group, and from the View, select the Errors view. clicking OK will launch RMONView, which will fetch and display the following:

Table 78	Errors
Statistics	Live counts of total errors seen on this interface
History	Historical counts of total errors seen on this interface
Host	Error packets transmitted by each host seen on this
	interface
Matrix	Error packets included in every conversation between
	pairs of hosts seen on this interface.