VNX: Shares from VNX CIFS Server not working due to SMB1 protocol disabled at domain controller

VNX OE for File

Able to join CIFS Server to windows active directory but unable to access shares.

server log shows following error in SMB protocol :

2015-08-12 16:51:42: 13157007360: SMB: 3: DC0x18 CIFS[NET] 10.202.0.101 dispatchIPCtoDC: No Reply TID=0x0 PID=0x19ef UID=0x0

2015-08-12 16:51:42: 13157007360: SMB: 3: SSXNego:Negociate NoReply

2015-08-12 16:51:42: 13157007360: SMB: 3: W2KDCRequestA:setDCDown(10.0.0.1)

2015-08-12 16:51:42: 13157007360: SMB: 3: last message repeated 1 times

2015-08-12 16:51:42: 13157007360: SMB: 3: CIFS::connectToDc:No DC found domain=domain.com

2015-08-12 16:51:42: 13157007360: SMB: 3: No more valid DC (currDC=0x0ABC)

2015-08-12 16:51:42: SMB: 3: Open&Bind(lsarpc): No reply from DC=AD_SERVER DCStatus=0/WAIT Ems=Bind_CreateXFailed

2015-08-12 16:51:42: SMB: 3: OpenAndBind[LSA] DC=AD_SERVER failed: Bind_CreateXFailed WAIT

PING DC fails:

$ server_cifssupport server_2 -pingdc -compname cifs.domain.com -dc AD_SERVER

server_2 : done

PINGDC GENERAL INFORMATION

DC SERVER:

Netbios name : AD_SERVER

CIFS SERVER :

Compname : cifs

Domain : domain.com

Error 13160939581: server_2 : compname cifs DC=AD_SERVER Step=’Logon IPC$’ failed with ntStatus=’WAIT’.

In all VNX OE code versions prior to 8.1.9.211, a VNX CIFS server requires SMB1 support on the Domain Controller to function correctly.

For a detailed resolution please refer to DELL EMC Support Solution 485045https://support.emc.com/kb/485045



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