HP StorageWorks Enterprise File Services WAN Accelerator 3.0.4 deployment guide (AG421-96001, March 2007)

HP STORAGEWORKS ENTERPRISE FILE SERVICES WAN ACCELERATOR DEPLOYMENT GUIDE 127
13 - TROUBLESHOOTING
D
EPLOYMENT PROBLEMS
Symptoms of SMB signing are:
 Access to some Windows file servers in a WAN is slower than access to other
Windows file servers in the WAN.
 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