JetDirect can’t login to NDS.

We tried several diff Jet Direct 500x’s and they still can’t login into the LAN. On the Jet Direct printout, the comment is “NDS error: cannot login”
Already tried recreated NDS printing objects, reseting the password, reseting the Jet Direct, andeven updating to the most current firmware. We’re running SP 6a. And can’t go any hgiher Anyone help!!

Frame types are the same and local printing works with this printer.
We now have the JD up in BINDERY mode, but it still won’t login. Any ideas? NE one? thanks for your help!