Citrix Systems Network Router NETSCALER 9.3 User Manual
• To create a TCP profile, click Add.
• To specify the MSS in an existing TCP profile, click the name of the profile, and
then click Open.
3. In the Create TCP Profile or Configure TCP Profile dialog box, specify values for
the following parameters, which correspond to the parameters described in
"Parameters for specifying the MSS value in a TCP profile" as shown:
"Parameters for specifying the MSS value in a TCP profile" as shown:
• Name*—name (cannot be changed for an existing TCP profile)
• MSS*—mss
* A required parameter
4. Click Create or OK.
Configuring the NetScaler to Learn the MSS Value
from Bound Services
from Bound Services
If you set the global TCP parameter learnVsvrMSS to ENABLED, the NetScaler
appliance learns the most frequently used MSS value for each configured virtual server.
When a client connects to a virtual server, the appliance advertises to the client the
MSS value that is optimum for that virtual server. The optimum value is the MSS of the
service or subset of bound services that are most frequently selected during load
balancing. Consequently, each virtual server configuration uses its own MSS value. This
enhancement enables the appliance to optimize the consumption of system resources.
appliance learns the most frequently used MSS value for each configured virtual server.
When a client connects to a virtual server, the appliance advertises to the client the
MSS value that is optimum for that virtual server. The optimum value is the MSS of the
service or subset of bound services that are most frequently selected during load
balancing. Consequently, each virtual server configuration uses its own MSS value. This
enhancement enables the appliance to optimize the consumption of system resources.
The default value of the learnVsvrMSS parameter is DISABLED. When enabled, MSS
learning is applicable only to virtual servers of type TCP, HTTP, and FTP.
learning is applicable only to virtual servers of type TCP, HTTP, and FTP.
To configure the NetScaler to learn the MSS for a virtual
server by using the NetScaler command-line
At the NetScaler command prompt, type the following commands to configure the
NetScaler to learn the MSS for a virtual server and verify the configuration:
NetScaler to learn the MSS for a virtual server and verify the configuration:
w set ns tcpParam -learnVsvrMSS (ENABLED|DISABLED)
w show ns tcpParam
Example
> set ns tcpParam -learnVsvrMSS ENABLED
> set ns tcpParam -learnVsvrMSS ENABLED
Done
> show ns tcpParam
TCP Parameters
Window Scaling status : DISABLED
Window Scaling factor : 4
SACK status : DISABLED
Learn MSS for VServer : ENABLED
.
.
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Chapter 5
Advanced Configurations
146