Avocent ESP-4 MI - ESP-4 MI Hub Post-Network Configuration; ESP-4 MI Hub Configuration Change Timing

Chapter 2: Hardware Installation and Network Configuration 9
• Using the configuration utility - The configuration utility is automatically enabled on port 1.
Using a terminal emulation program of your choice (with a serial connection at 19200 baud, 8
bits, no parity and one stop bit), you may access the configuration utility on this port (see
Accessing the Configuration Utility on page 35). Then, configure the network information (see
Displaying or Changing Network Configuration Values on page 37).
• Using the serial port redirection connection method - Install the ESP-4 MI drivers included on
the CD (be sure to check the Avocent web site, www.avocent.com, for the latest version).
You may also use the ESP-Install program with a script file to automate the installation; see
ESP-Install Program on page 58. The Release Notes also contain driver information.
• Using a configuration file - If you are using a configuration file with a BootP or DHCP server,
consult your operating system documentation to determine how to configure the BootP or
DHCP server.
• After the ESP-4 MI hub acquires an IP address (by any method), it will no longer use
BootP or DHCP. Therefore, you cannot change the network values using this method.
• The ESP-4 MI hub requires a permanent IP allocation. If you are using DHCP, it must
have an infinite lease on the assigned IP address; an IP address with a finite lease will not
be accepted.
The BootP or DHCP server may also specify a configuration file using the “bootfile”
parameter. See Chapter 6, beginning on page 45, for more information.
After startup and address configuration
After the ESP-4 MI serial hub’s network information has been configured, you may configure each
of the ports. This includes specifying the interface type, port attributes and supported
connection methods.
To configure ports:
• Using the web interface - see Displaying or Changing Serial Port Interface, Attributes and
Connection Methods on page 27.
• Using the configuration utility - see Displaying or Changing Port Interface, Attributes and
Connection Methods on page 38.
• Using a configuration file - see Port Interface Command on page 47, Port Connection Method
Commands on page 47 and Port Attributes Command on page 48.
When Changes Take Effect
When you change values, the ESP-4 MI serial hub’s EEPROM is updated immediately. Some
changes take effect immediately; others take effect when the next connection is established with a
port or after the hub is rebooted.