Connection error between SAP BW as source and IDT

Dear SAP BI Platform experts ,

I have to set a connection between IDT -Information Designer Tool and the SAP BW/OLAP as a source system ,

But I have tried with the BO CMC and with in the IDT ,But I am getting the below error -

""""Server <Name> not found or server may be down (FWM 01003 )

Error : Failed to log on host <Name > ,User <Name > could naot reach CMS <Name>,

Specify the correct host and port and check for network issues (FWM 20030)

Cause of error :

Could not reach CMS <Name> ,Specify the correct host and the port and check for network issues"""""

Please help me on the above issue and let me know your views on how can do the investigation .

Could you please provide me the step by step process.. for how to capture this logs from the server

need to mention each folder and how to capture these logs..

Regards ,

Pradeep Gorpadu