Cabletron Systems SFCS-200WG User Manual
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3-8
Switch Hardware
3.2.2.1.4
CTL 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.
3.2.2.1.5
NEXT 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.
3.2.2.1.6
SELECT 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.
3.2.2.1.7
Display 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.