User's Manual

– To schedule the task to run at a later time, select Do not perform discovery or inventory, and refer to the

Scheduling a New Discovery Task or Scheduling a New Inventory Task sections.

– Review your selections in the Summary screen and click Finish. To change any of the parameters in

previous configuration screens, click Back. When complete, click Finish.

Changing the Default SNMP Port

SNMP uses the default UDP port 161 for general SNMP messages and UDP port 162 for SNMP trap messages. If these

ports are being used by another protocol or service, you can change the settings by modifying the local services file on

the system. To configure the managed node and OpenManage Essentials to use a non-default SNMP port:

1. In both the management station and managed node, go to C:\Windows\System32\drivers\etc.

2. Open the Windows SNMP services file using notepad and edit the following:

– Incoming SNMP trap port (receiving alerts in OpenManage Essentials) — Modify the port number in the

line, snmptrap 162/udp snmp-trap #SNMP trap. Restart the SNMP trap service and SNMP

service after making the change. On the management station, restart the DSM Essentials Network Monitor

service.

– Outgoing SNMP requests (Discovery/inventory in OpenManage Essentials) — Modify the port number in

the line snmp 161/udp #SNMP. Restart the SNMP service after making the change. On the

management station, restart the DSM Essentials Network Monitor service.

Outgoing trap port — In OpenManage Essentials trap forwarding alert action, specify the

<<trap destination

address: port number>>

in the Destination field.

NOTE: If you have previously configured IP security to encrypt SNMP messages on the default ports, update

the IP security policy with the new port settings.

Excluding Ranges

Configure exclude ranges to prevent servers from being discovered/rediscovered or limit the number of devices

displayed in the device tree. To exclude a range from discovery task:

1. From OpenManage Essentials, select Manage → Discovery and Inventory → Common Tasks → Add Exclude

Range

2. In Exclude Range Configuration, provide IP address/range, discovery range name or host name and click Add.

3. Click Finish.

Viewing Configured Discovery and Inventory Ranges

From OpenManage Essentials, click Manage → Discovery and Inventory → Discovery Ranges → All Ranges.

Scheduling Discovery

1. Click Manage → Discovery and Inventory → Common Tasks → Discovery Schedule.

2. In Discovery Schedule Settings:

a) Select desired schedule parameters.

b) (Optional) You may adjust the task speed slider for faster task execution; however, more system resources are

consumed.

c) Discover all instrumented devices.