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Section 5 - Configuration Utility
The ESP-2 serial hub has a built-in configuration utility that may be used to configure
the hub and its ports. You may configure network parameters, change port attributes
and connection methods, download and install FLASH images, reboot or reinitialize
the hub and monitor status and statistics. You may also download a configuration file.
Most of the operations available in the configuration utility are also available in the
web interface, with the exception of the debug operations, which are available only in
the configuration utility. For more information, see Web Interface on page 15.
5.1 Accessing the Configuration Utility
The configuration utility may be accessed three ways: with Telnet, by serial connection
to port 1 when the ESP-2 serial hub has no configured IP address or by serial connection
to the port(s) that have the configuration utility connection method enabled.
Accessing with Telnet
You may initiate a Telnet session to the IP address of the ESP-2 serial hub and the
standard Telnet port 23. For example, if an ESP-2 hub has an IP address of
192.168.0.5, entering
will connect to the configuration utility.
telnet 192.168.0.5 23
If the ESP-2 serial hub does not have a nondefault IP address (because it has not yet
been configured or the hub has been reinitialized), you may use the predefined IP
address of 192.1.1.1 to access the hub.
NOTE: The predefined IP address (192.1.1.1) is fixed, and unexpected errors may occur if
another device has the same IP address or if there is more than one uninitialized ESP-2 serial
hub on the network. After the configuration utility is accessed, you must configure an IP address
before the hub becomes operational. After the IP address is configured, the hub will no longer be
accessible with the predefined IP address.
The ability to access the configuration utility with Telnet is a configurable option. By
default, this option is enabled. You may disable/enable it using the configuration
utility (see Displaying or Changing Configurable Features on page 29), the web
interface (see Displaying or Changing Configurable Features on page 19) or in a
configuration file (see Configurable Features Commands on page 35).
Accessing a hub with no configured IP address
The configuration utility is automatically enabled on port 1 after delaying several
seconds to allow an IP address to be configured using DHCP/BootP. The port will be
configured at 19,200 baud, 8 bits per character, no parity, 1 stop bit and no flow
control. If the ESP-2 serial hub already has an IP address or if the address is acquired
through DHCP/BootP, this access method will not be available.
Accessing on port 1 or 2 using the configuration utility connection method
After the ESP-2 serial hub has a configured IP address, the administrator may enable
the serial configuration utility on port 1 or 2. When this connection method is
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Equinox ESP-2 OPTO Serial Hub Installation and User Guide
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