General Configuration Screen

If the time entered is within the 1 to 30 minutes range, the message “SAVED OK” displays at the top of the screen. If the entry is not valid, Local Management does not alter the current setting, but it does refresh the Screen Lockout Time field with the previous value.

4.2.10 Configuring the COM Port

Upon power up, the COM port is configured to the default settings of ENABLED and LM.

CAUTION: Before altering the COM port settings, ensure that the device is set with a valid IP address. (Refer to Section 4.2.1.) Read this entire COM port configuration section before changing the settings of the COM port.

The COM port supports the following applications:

Local Management connections

American Power Conversion (APC) Uninterruptible Power Supply (UPS) connections

To configure the COM port, proceed as follows:

1.Use the arrow keys to highlight the Com field.

CAUTION: Do NOT disable or alter the settings of the COM port while operating the current Local Management connection through a terminal. Altering the COM port settings disconnects the Local Management terminal from the port, and ends the Local Management session. If the device was previously assigned a valid IP address, reenter Local Management by establishing a Telnet connection to the device. If the device does not have a valid IP address and the COM port has been disabled or the settings changed, reset NVRAM on the device using Mode Switch 7 to reestablish COM port communications. For details about Switch 7 and its operation. refer to the device installation user’s guide shipped with your device.

2.Press the SPACE bar to choose either ENABLED or DISABLED. The COM port must be ENABLED for the LM or UPS application. Selecting DISABLED prevents the COM port connection to the terminal, providing additional device security.

CAUTION: If the COM port is reconfigured without a valid IP address set on the device, the message shown in Figure 4-5displays.

Do not continue unless the outcome of the action is fully understood.

Device Configuration Menu Screens 4-13

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Enterasys Networks 2H253, 2E253, 2H252, 2H258 manual Configuring the COM Port