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CHAPTER 4: Operation
Table 4-1. The Switch’s Front-Panel Controls, Indicators, and Connectors
No. in
Component
Function
Fig. 4-1
1
PWR LED
Lights when the FradSwitch A/S 3 Port is powered
ON.
2
ERR LED
Lights when a hardware malfunction is detected
during the power-up self-test or after you press the
RESET pushbutton.
3
OVF LED
Lights when FradSwitch A/S 3 Port’s buffers are
full. In a properly designed system, this condition
usually indicates that one of the units connected to
the Switch is not responding to the flow-control
commands the Switch is sending it, which can
happen if the Switch is configured incorrectly.
4
TEST LED
Lights when the FradSwitch A/S 3 Port is in
diagnostics mode (one of its test loops is active).
Data traffic is interrupted during diagnostic testing.
5
SYNC LEDs
Indicate the synchronization status of the
corresponding main-link port on the FradSwitch
A/S 3 Port:
Condition:
Indication:
Off
Switch not powered.
On
Switch powered and synchronized
with the peer at the other end of the
main link.
Continuous FradSwitch A/S 3 Port is powered but
flashing
not synchronized with the
corresponding peer.
6
ACTIV (Main-Link
Light to show activity (reception or transmission of
Activity) LEDs
frames) on the corresponding main-link port.
7
Control Port
Connect a terminal to this port to configure the
Switch through its firmware-based menu system.
8
ACT (Control-Port
Lights when the control port is active (receives
Activity) LED
commands or transmits configuration information).
9
RESET Button
Press to reinitialize the FradSwitch A/S 3 Port.
