Table 3.3: Raw Tcp Server Connection Method Configurable Items - Avocent ESP Serial Hub Installer/User Manual

18 ESP Serial Hub Installer/User Guide
open and in use by any connection method, including an existing raw TCP server connection on
that port. If the port is currently in use, the connection request will be rejected.
The TCP session will remain active until the remote client closes the TCP socket, the TCP
connection is broken or the inactivity time-out (if enabled) occurs.
Table 3.3 describes this method's configurable items for each serial port.

Table 3.3: Raw TCP Server Connection Method Configurable Items

Item
Enable/disable
Local IP port
number [base]
Inactivity time-
out
Monitor DCD
Description
Enables or disables the raw TCP server connection method on the port. (See Exclusivity
and restrictions on page 15.)
The default value is disabled.
Specifies the IP port number on which the TCP server will listen.
If the all ports option is being used for configuration, this value specifies the local IP port
base. Each port's actual local IP port number will be the base plus the port number. For
example, if 6000 is specified as the base, the local IP port number for port 1 will be 6001,
port 2 will be 6002 and so on.
This value (or its result when using the all ports option) must meet the following criteria:
• It cannot conflict with the port numbers specified for other enabled connection methods
on any port.
• Valid values are 1024-65535, except 4000 and 4100, which are reserved.
• When using the all ports option, 4000 or 4100 may be used as the base. However, you
cannot specify a base that, when added to a port number, will equal 4000 or 4100.
When using the all ports option, all ports must be valid or the entire selection will not
be accepted.
The default value is 4001 for port 1, 4002 for port 2 and so on.
Specifies the length of time before the TCP session is disconnected if there is no activity.
Valid values are 0-65535 seconds. A 0 value disables the inactivity time-out.
For example, a value of 60 indicates the TCP session will be disconnected if there is no
activity for a period of 60 seconds.
The default value is 0 (disabled).
(Valid only on RS-232 ports.) Enables or disables monitoring of the DCD signal, which is an
indication that a serial device is attached and powered on. When enabled, the TCP server
will refuse the TCP connection if the inbound DCD signal is logically low at the time the
connection is initiated. If the inbound DCD signal changes from logically high to low while a
TCP session is active, the TCP connection will be closed.
The default value is disabled.