Cabletron Systems 9A000 manual CTL Port, Next Pushbutton, Select Pushbutton, Display LED

Switch Hardware

3.2.2.1.4CTL Port

A control port inside the SCP, referred to in the switch software as the CTL port, is a logical (not physical) location where cells that are directed to the SCP itself are sent. The CTL port has two roles, serving as both a host and a switch board controller. All signalling from the switch host and every attached host must interact with the switch board controller.

3.2.2.1.5NEXT Pushbutton

The NEXT pushbutton lets you scroll through the menu that is shown on the display LED after the power is turned on or after the SCP is reset/rebooted.

3.2.2.1.6SELECT Pushbutton

The SELECT pushbutton lets you choose an option from the menu that is shown on the display LED after the power is turned on or after the SCP is reset/rebooted.

3.2.2.1.7Display LED

During the boot process and the initial power-on diagnostics, the display LED shows messages about what is happening to the SCP. It is also used to show the menu choices for the NEXT and SELECT pushbuttons after the power is turned on or after the SCP is reset/rebooted. The choices shown on the dis- play LED are as follows:

Flash ? When chosen, the SCP will attempt to boot from the FLASH file.

Ethernet ? When chosen, the SCP boots from the network.

Monitor ? When chosen, the user can connect a terminal to the serial port and run hardware self-diagnostics.

Auto ? When chosen, the SCP will attempt to boot from the FLASH. If this is unsuccessful, then the SCP will perform an Ethernet boot.

To access the modes listed above, press the NEXT pushbutton while the switch is booting until the mode you want to access is shown on the display LED. Then, press the SELECT pushbutton.

After the boot process and self-diagnostics are complete, the name of the SCP is shown in the display LED during normal operations, if an SCP name has been assigned. If an SCP name has not been assigned, it will display ATM SWITCH. For information on creating or modifying the SCP name, please refer to the section on configuring the SCP name in Appendix B, AMI Configura- tion Commands, in the Cabletron ATM Switch Configuration Manual.

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