NB750 and DCE 7.8 error Device status may be inaccurate because an attempt to transfer a device definition file (DDF) failed

[masolans]

My DCE (ver 7.8) detect my new nb750 ( ver 5.2.2.63) but receive that error Device status may be inaccurate because an attempt to transfer a device definition file (DDF) failed

Credentials are correct, ports are open in the network

How can solve it?

[TechieBala]

Dear @masolans 

I have seen this error occurs for the two reasons mainly:

Using Netbotz 750 superuser account password instead of appliance's root account password in Device File Transfer Settings

Using the wrong protocol ie., FTP instead of SCP

Please also refer this k-base docs that can be useful for this DDF error. 

https://www.se.com/us/en/faqs/FA381605/

https://www.apc.com/au/en/faqs/FA177004/

If possible, please verify these settings again and re-discover the Netbotz 750 appliance in DCE. Please also make sure that you are able to ping the Netbotz appliance IP address through DCE web UI --Status--Additional Information--Troubleshoot network--Ping. If this fails and if DCE can not ping the device, I recommend allowing ping on the device / network where applicable and see if it helps. 

I hope this helps. 

Regards,

Bala