Not able to access CIFS map shares after transition to C-mode

Hi All, 

I have performed a simple transition as part of  my testing and i see after transition my CIFS shares were not accessible 

I am able to ping the my NAS SVM but when i try to map it fails 

Note:- I am trying to map shares on to my workstation which is not added in to domain even i have tried from my DNS server itself it failed but i was able to ping SVM's 

Please let me know what all the parameters i need to check for this ?

Thanks,

Nayab