No access to CIFS Share over IP

[1solution]

Hello all

After updating a customer filer from 8.3 to 9.1P20, I had a very strange problem.

All CIFS share was accessable but only with the SVM Name:

\\FILER-NAME\data

If I changed the SVM Name with the IP address, I got the error message "Windows cannot access \\192.168.1.10\data.

I open a case at Netapp Support and we did a lot of tests, but nobody had a solution.

After more than 20 hours, I have decided that I update to 9.3P18.

When the update was finished, the problem no longer existed.

If you had this Problem make a ONTAP update.

Best regards

Martin

[Ontapforrum]

Hi,

Sounds interesting and yet strange. Has NetApp support reported any BUG ? Have they managed to reproduce this issue?

I am sure if you had to downgrade Ontap from 9.1P20 to P18, there must be something which prevented it.

In your DNS: Was there an DNS HOST(A) record resolving to Data LIF IP ?

Logs:
Any findings from the 'packet traces' ?
SECD logs?

Thanks!

[Mjizzini · Accepted solution]

It look like Kerberos authentication was working correctly while Netlogon was experiencing some issues.

The issue could be related to the first upgrade.  

Assumption:  The problem resolution was due: Ontap 9.3 has code change and Bug fixes. Both node had to be rebooted. The DC connections had to be reset.

[Barrydavis]

You can use IP changer to work easily and check you system with CIFS