On the Discovery Type window, specify
the type of discovery: a Layer 3 or a Layer 2 discovery.
About this task
A Layer 3 discovery is quicker, but the results of a Layer
3 discovery cannot be used for root cause analysis. A Layer 2 discovery
is more detailed and the results can be used for root cause analysis.To
specify discovery type, complete these steps.
Procedure
- On the Discovery Type window, specify
a Layer 2 or Layer 3 discovery.
- If you selected Layer 3, the End Node
Discovery window is displayed.
On the End
Node Discovery window, you can filter out end node devices
such as workstations and printers. You can also filter out devices
with no SNMP access.
Tip: Filtering out all end nodes
in networks that have large numbers of end nodes can lead to speed
and performance improvements in your discovery.
- If you selected Layer 2 and Layer 3, the VLAN
Modelling window is displayed.
In the VLAN
Modelling window, you configure the discovery to model
VLANs in the resulting topology. This enables VLANs to be considered
when performing root cause analysis. VLANs are a Layer 2 concept and
VLAN modelling is required for Layer 2 discoveries only. Specify whether
you want to model VLANs. When you have specified an option, click Next to
display the End Node Discovery window.