Tripp Lite B095-003-1E-M Network Card User Manual


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VirtualPort for Windows continued
Connection
• “Connect at system startup”—When enabled VirtualPort will try to connect to
the console server when the VirtualPort service starts (as opposed to waiting for the
application to open).
• “Time between connection retries” specifies the number of seconds between TCP
connection retries after a client-initiated connection failure. Valid values are 1-255. (The
default is 1000 milliseconds and VirtualPort will continue attempting to reconnect forever
to the console server at this interval.)
• The“Send keep-alive packets” option tests if the TCP connection is still up when
no data has been sent for a while by sending keep-alive messages. Select this option
and specify period of time (in milliseconds) after which VirtualPort sends a command
to remote console server end in order to verify connection’s integrity and keep the
connection alive.
• The“Keep-Alive Interval” specifies the number of seconds to wait on an idle connection
before sending a keep-alive message. The default is 1000 milliseconds. The “Keep-Alive
Timeout” specifies how long VirtualPort should wait for a keep-alive response before
timing out the connection.
Note: In the event of a “Keep-Alive Timeout”, ensure the remote serial device is connected
to the nominated port on your remote console server and the serial port has been
configured, i.e. set the RS232 Common Settings such as baud rate, select console server
mode for the port and specify the appropriate protocol to be used (RAW TCP, RFC2217 or
VirtualPort Secure mode for encrypted communication). Also ensure you can access the
console server.
• “Disable Nagle Algorithm”—The Nagle Algorithm is enabled by default and it reduces
the number of small packets sent by VirtualPort across the network.
Advanced
• Check“Receive DSR/DCD/CTS changes” if the flow control signal status from the
physical serial port on console server is to be reflected back to the Windows COM port
driver (as some serial communications applications prefer to run without any hardware
flow control i.e. in “two wire” mode).
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