Troubleshooting guide

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Cisco Wide Area Application Services Configuration Guide
OL-26579-01
Chapter 1 Configuring Application Acceleration
Enabling and Disabling the Global Optimization Features
• Handoff—If the negotiated dialect is higher than the chosen highest dialect to optimize, the
connection is handed off to the generic accelerator.
• Mute—The dialects higher than the one chosen as the highest dialect to optimize are removed from
the negotiation list.
Step 5 In the Bypass File Name Pattern text box, enter the patterns for the file names that you want the SMB
accelerator to bypass optimization for. The files whose names match the specified expressions are not
optimized.
Step 6 Check the Read Ahead Optimization check box to enable the SMB to optimize the quantity of
read-ahead data from the file. The SMB performs a read-ahead optimization only when the file is opened
using the ops lock feature. This box is checked by default.
Step 7 Check the Meta Data Optimization check box to enable metadata optimization. This box is checked by
default.
Step 8 Check the Named Pipe Optimization check box to enable named pipe optimization by caching named
pipe sessions and positive RPS responses. This box is checked by default.
Step 9 Check the Write Optimization check box to enable the write optimization by speeding up the write
responses to the client. This box is checked by default
Step 10 Check the Microsoft Office Optimization check box to enable optimizations for all versions of
Microsoft Office. The SMB accelerator does not perform read-ahead, write optimization, and lock-ahead
for Microsoft Office if this optimization is disabled. This box is checked by default.
Step 11 Check the ‘Not Found’ Cache Optimization check box to enable caching pathnames of files not found.
This box is checked by default.
Step 12 Check the Invalid FID Optimization check box to enable optimization of handling files with invalid
file handle values. This box is checked by default.
Step 13 Check the Batch Close Optimization check box to enable asynchronous file close optimizations. This
box is checked by default.
Step 14 Click Submit to save the changes.
To configure SMB acceleration from the CLI, use the accelerator smb global configuration command.
Configuring CIFS Accelerator Express
The CIFS application accelerator express handles optimizations of file server operations on a WAAS
Express device. It interoperates with either the standard CIFS accelerator or the standard SMB
accelerator on a standard WAAS device.
CIFS accelerator express can be configured to perform the following file server optimizations:
• Write optimization—CIFS accelerator express performs write optimization by speeding up the write
responses to the client by acknowledging the Write requests to the client whenever possible and, at
the same time, streaming the Write request over the WAN to the server.
• Read Ahead optimization—CIFS accelerator express performs a read-ahead optimization on files
that use the oplock feature. When a client sends a read request for a file, it is likely that it may issue
more read requests for the same file. To reduce the use of network bandwidth to perform these
functions over the WAN on the file server, the SMB accelerator performs read-ahead optimization
by proactively reading more file data than what has been initially requested by the client.