Device does not load into IMC Resource Manager

[tdeserranno]

How can I verify in logs on IMC why a particular device (D-Link switch in this case) can not be loaded into IMC.

I get the error 'Failed to access the device' even though I can perfectly ping the device from IMC server.

I have other models of D-Link switches loaded as ICMP/Desktop type of device.

I do not need these devices to be managed through Telnet/SSH or SNMP at all.  Just be able to monitor its presence on ping/ICMP base.