HP Network Direr Software Products manual Subsequent Map Updates, Midnight?

134CHAPTER 4: DISCOVERING THE NETWORK

	and navigating between the subnets, see “Working with the Map” on
	page 151.
	Subsequent Map Updates
	Whenever you perform a discovery on a map that already contains
	subnets and devices, 3Com Network Director intelligently attempts to
	update the existing map. Any newly discovered devices and subnets will
	be added to the map, while any existing devices and links will be
	updated. See “The Discovery Process – Rediscovery” on page 104 for the
	rules on how device and link properties are updated. If you have modified
	the position of devices on the current map 3Com Network Director
	preserves the layout of the changes you have made and attempts to
	position the new nodes relative to your changes. If you are not happy
	with the results you can manually move the nodes yourself or you can
	force 3Com Network Director to perform a clean layout of the view by
	selecting View > Relayout Map.
Examples	This section provides examples of how you may use the Network
	Discovery features of 3Com Network Director to accurately discover the
	areas of your network you are interested in.
How do I discover my	You may wish to perform a discovery when the network is not under
network every day at	heavy load, or when it is most stable, such as at midnight each day. While
midnight?	3Com Network Director does generate some traffic of its own when
	discovering your network, it attempts to keep the amount of traffic to a
	minimum so its impact on network performance generally should not be
	an issue. However, this may be a consideration for you if you are
	discovering a remote site over a slow WAN link.
	Assuming you do not wish to manually initiate the discovery each day you
	can set up a scheduled discovery. You can do this in one of two ways:

Directly From the Options dialog box

1From the 3Com Network Director main window, select Tools > Options to display the Options dialog box

2Select the Discovery tab

3Select the At… radio button