Owner's Manual

Discovery 195
Up/down/top/bottom icons also appear in this toolbar so you can rearrange the order of these
authentications. To move checked (
Select ed) items to the top of the list, click Resort .
Click the
Select icon or the checkbox in the list of authentications to use them with the selected
item. Discovery targets often have multiple authentications, and you can check any number of
those available.
When you select multiple authentication credentials, OpenManage Network Manager tries each
one in the listed order. Best practice is to list the credentials more likely to succeed for the majority
of devices first. Discovery does take longer when you add more credentials.
Once discovery identifies the device, its device driver can report additional authentication needs.
Therefore, discovery results may change, depending on their order. For example if you specify
SNMP and WMI credentials when discovering a Windows server, the server may respond to the
SNMP request, but since OpenManage Network Manager cannot identify the device with the
SNMP results, discovery then tries the WMI credentials. Here, OpenManage Network Manager
would discover the device with both SNMP and WMI credentials since both were valid for that
server. On the other hand if the order was WMI first, then SNMP, the device ultimately connects
only with the WMI credentials because WMI can identify the target and discovery would not use
the SNMP credentials.
Generally speaking, OpenManage Network Manager tries the SNMP credential first to identify the
Equipment type with the sysObjectID. Once OpenManage Network Manager identifies the
equipment type, the appropriate device driver requests and credentials let OpenManage Network
Manager establish a CLI login and interrogate the device further for “deep” discovery. If discovery
fails to get a valid SNMP authentication, then the device appears as an
UNKNOWN entity. Using
Inspect before discovery can disclose which credentials fail.
Discovery remembers the commonly used Authentications. When a device is discovered with a
particular authentication, OpenManage Network Manager remembers it for on the next discovery
execution. Remembered Authentications don't apply to Resource Profiles during editing or
execution.
Click
Apply to accept your edits, or Cancel to abandon them. You can then configure the Options
tab.