HP Network Direr Software Products manual Components

Components 123

■RADIUS servers

■SNMP-enabled servers

Only IP devices As described in the “Key Concepts” section on page 92, the topology part of discovery can result in MAC-only nodes being created as a result of the information read from bridge FDB tables. By selecting this option this behavior is disabled.

This option will be most effective if you have segregated your devices such that:

■Connecting devices and important IP devices are within a certain IP range on each subnet.

■The remaining devices are within another range.

■Connecting devices and important IP devices are on different subnets from the remaining devices.

This way you can use the range specification or the list of subnets to discover respectively, along with this option, to eliminate unimportant end stations.

All devices Selecting this option will result in all devices detected during discovery and topology being added to the map.

Rediscovery operations never result in devices being removed from an existing map (unless two nodes have been merged into one). If you have a subnet which contains MAC-only devices, and rediscover it with Only core devices selected, then only core devices will be rediscovered, but any existing non-core devices in the subnet will remain in the subnet.

If there is a subnet in your map that contains unwanted devices that would be filtered out by the Only core devices or Only IP devices options then you can remove these devices from your map by first deleting the subnet from the map and then discovering it afresh in the Network Discovery wizard, selecting the appropriate option in this wizard pane. See “Deleting Items from the Map” on page 204 for details of how to delete a subnet.

Note, however, that refreshing a subnet in this manner will also lose any changes you may have made to the map in this subnet (such as manual changes to the topology or setting the Custom Name of a device).