Citrix Systems Network Router NETSCALER 9.3 User Manual
w
You do not configure window scaling unless you clearly know why you want to
change the window size.
change the window size.
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Both hosts in the TCP connection send a window scale option during connection
establishment. If only one side of a connection sets this option, windows scaling is
not used for the connection.
establishment. If only one side of a connection sets this option, windows scaling is
not used for the connection.
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Each connection for same session is an independent Window Scaling session. For
example, when a client's request and the server's response flow through the
NetScaler appliance, it is possible to have window scaling between the client and
the appliance without window scaling between the appliance and the server.
example, when a client's request and the server's response flow through the
NetScaler appliance, it is possible to have window scaling between the client and
the appliance without window scaling between the appliance and the server.
By default, window scaling is not enabled.
To configure window scaling by using the NetScaler
command line
command line
At the NetScaler command prompt, type the following command to configure window
scaling and verify the configuration:
scaling and verify the configuration:
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set ns tcpParam [-WS ( ENABLED | DISABLED )] [-WSVal <positive_integer>]
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show ns tcpParam
Example
> set ns tcpParam -WS ENABLED -WSVal 6
Done
> sh ns tcpParam
TCP Parameters
Window Scaling status : ENABLED
Window Scaling factor : 6
SACK status :
ENABLED
.
.
.
TCP minimum RTO in millisec: 1000
TCP Slow start increment: 2
Done
Parameters for configuring window scaling
WSVal
Factor used to calculate new window size. Possible values: 0 to 8. Default: 4.
WS
Enables or disables window scaling.
Citrix NetScaler Administration Guide
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