Users Guide

Resource Management Portlets and Editors | Resource Management
190 OMNM 6.5.3 User Guide
Link Discovery
This is an automated network link discovery feature that you can initiate from individual devices in
the
Resource Editor portlet, or with the Link Discovery button on the home screen. The following
device features that provide link information:
• IEEE Link Layer Discovery Protocol (LLDP) support
• Cisco Discovery Protocol (CDP) support
Links discovered can also appear in the screen described in
Links in a Topology on page 252.
Although OpenManage Network Manager automates link discovery, you must enable the sources
for link discovery information on the devices where you do such discovery.
When you elect to discover links from a right-click menu, the
Network Link Discovery screen
appears. Check the type of links you want to discover or from which you want to refresh collected
data. Other options available on this screen include the following:
•
Layer 2/Layer 3 option allows you to select the layer for which you want to discover links.
Depending on the layer selected, the available types appear as options below this tab
selection.
NOTE:
Click All/None to select all or none of the displayed types for each layer. Remember, selecting more link
types consumes more time and processing power.
• Archive Data is an advanced option. Selecting this option archives current data before
collecting information about and discovering links.
NOTE:
Links with incomplete endpoint information are not discovered.
Click Add Schedule to schedule link discovery, or Execute to run it now (and confirm you are
willing to wait for results in a subsequent screen). The Job Viewer tab in the link discovery screen
displays the message traffic between OpenManage Network Manager and the device(s). See
Audit
Trail Portlet
on page 154 for more about Job Viewer screens.