Owner's Manual

Discovery 189
1 Discover the device.
2 If there are any problems with any devices, then telnet to any problem devices and verify that
telnet works / authentication is good.
3 If there are SNMP problems, use this application’s SNMP tool.
Here’s how to use that SNMP tool:
1 With the application server running, open a shell ( Start -> Run cmd ). In that shell, type the
following commands (followed by [Enter]):
2 oware .
3 snmpapitalk .
4 dest <IP address of device you want to talk to>
5 read <read community>
6 get <snmpoid>. For the snmpoid, you can use syslocation or sysname
A response should appear. If the device does not respond, then there is a problem with either the
community string, a firewall or some other network problem. Resolve this before proceeding with
discovery.
Managing Devices with the Core Device Driver
This application can discover and manage most IT infrastructure devices on your network. The
application’s core discovery and management functionality works for most SNMP-enabled devices
without using Standard Device Drivers, and enters an Unclassified Device in the database when
discovery encounters such an SNMP-enabled device. Installing the Enterprise MIBs of a particular
device type as described in MIB Browser on page 166 enables the greatest amount of functionality.
The following is potentially available for such devices:
• Best-effort Device Discovery (using Entity MIBs).
• Inventory Tracking and Reporting.
• SNMP Event Reception / Alarm propagation.
• Performance Monitoring using SNMP MIB OIDs
This application automatically classifies devices detected with forwarding enabled as routers.
NOTE:
Third party devices on your network may appear as Dell Powerconnect switches during OpenManage
Network Manager discovery. While you may be able to manage these devices with OpenManage
Network Manager, they are not supported, and count against your licensed limit of unknown devices.
You may choose to delete the non-supported devices from OpenManage Network Manager Resources
or continue to manage these third party devices without support from Dell.