My company has purchased a nss6000.
The instructions that warning of an firmware upgrade before performing any type of configuration.
After updating it with the version 1.14-20 attempted join to domain returned error: Join to domain is not valid - No logon servers. Configuration was exactly as it was not. Emphasize that the Domain Controller was set via IP address.
It was necessary to downgrade to version 1.12 to make the join to the domain, keeping the same settings.
After the upgrade I still have the same error.
I warn you of this problem and there thank you for your willingness and I apologize for my bad English.