Cabletron Systems MCC-FRIO Quick Reference - Qr.2
of
4
QR-3
QR.2
LED FUNCTIONS
Consult the diagram to help interpret LED indications.
MCC-FRIO LEDs
PWR - Power
The
PWR
LED lights GREEN during normal operation, indicating the
reception of power. If the LED is off, the MCC-FRIO is not receiving
power.
16 Mb - Ring Speed
The
16 Mb
LED lights YELLOW to indicate a 16 Mbps ring speed. An
unlit LED indicates a ring speed of 4 Mbps.
P1 and P2 - Ports
The
P1
and
P2
LEDs indicate the status of the associated lobe port, as
described in the table below.
LED Activity
Meaning
GREEN
Phantom current present (port inserted).
OFF
No phantom current present.
Blinking RED
Speed-fault condition caused the port to
wrap.
MCC-FRIO
P1
RI
16 Mb
PWR
P
1
P
2
RO
P2
RO
RI
TX
TX
RX
RX
P1
RI
16 Mb
PWR
P2
RO