HP StorageWorks Enterprise File Services WAN Accelerator 2.1.7 Deployment Guide (407118 - 003, June 2006)

HP STORAGEWORKS ENTERPRISE FILE SERVICES WAN ACCELERATOR 2.1.7 DEPLOYMENT GUIDE 127
11 - TROUBLESHOOTING
D
EPLOYMENT PROBLEMS
 Connections are shown as optimized in the Management Console.
 The results of a tcpdump show low WAN utilization for files where their
contents do not match existing segments in the segment store.
 Copying files via File Transfer Protocol (FTP) from the slow server is much
faster than copying the same files via mapped network drives (CIFS).
When copying via FTP from a slow server is much faster than copying from the
same server via a mapped network drive, the possibility of other network
problems (such as duplex mismatch or network congestion) with the server is
ruled out.
 Log messages such as error=SMB_SHUTDOWN_ERR_SEC_SIG_ENABLED
The following sections describe possible solutions to SMB-signed sessions:
 “Solution: Enable Secure-CIFS” on page 127
 “Solution: Disable SMB Signing with Active Directory” on page 127
For more information, see the HP StorageWorks Enterprise File Services WAN
Accelerator Installation and Configuration Guide.
Solution:
Enable
Secure-CIFS
Enable Secure-CIFS using the CLI command protocol cifs secure-sig-opt enable.
For more information, see the HP StorageWorks Enterprise File Services WAN
Accelerator Installation and Configuration Guide.
Alternatively, to enable secure-CIFS using the Management Console, check the
Optimize Connections with Security Signatures box in the Optimization Service -
Protocol: CIFS page.
NOTE: Secure-CIFS is enabled by default in Version 2.x.
TIP: If a log file shows messages such as
error=SMB_SHUTDOWN_ERR_SEC_SIG_REQUIRED, use the solution described in
“Solution: Disable SMB Signing with Active Directory” on page 127 because enabling
secure-CIFS has no effect when SMB signing has been set to "required".
For details, see the HP EFS WAN Accelerator Management Console Online Help or
the HP Enterprise File Services WAN Accelerator Management Console User Guide.
Solution:
Disable SMB
Signing with
Active Directory
If you have tried enabling Secure-CIFS as described in “Solution: Enable
Secure-CIFS” on page 127 but SMB signing still occurs, consider using Active
Directory to disable SMB signing requirements on servers or clients. For details, see
the HP StorageWorks Enterprise File Services WAN Accelerator Installation and
Configuration Guide.