Page 1
The Complete Networking Solut
ion
NOT
APPLICABLE
MCC-FRIO QUICK REFERENCE
QR.1 SETTING JUMPERS AND SWITCHES
SW1
OFF
OFF
SW2
ON
ON
SW1
OFF
ON
P1
OFF
SW2
P1
ON
Switch Configuration Table
(From back of card)
SW1 (FOT-A or RI)
SW2 (FOT-B or RO)
On – Cabletron fiber key
1
Off – 802.5J fiber key
On – RO or lobe (RJ45 port)
2
Off – RI or station (RJ45 port)
Location of SW1/SW2 Switchblocks And Jumper P1
Copyright 1997 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005
All Rights Reserved
Printed in the United States of America
Order Number: 9032132-01 July, 1997
Note: Switch 1 on SW1 controls the RI port.
Switch 2 on SW2 controls the RO port.
(Default Settings)
On – Autowrap enable (RJ45 port)
3
Off – Autowrap disable (RJ45 port)
On – Station and lobe application
4
Off – RI and RO application
QR-1
Page 2
QR.1.1 Selecting The Ring Speed
Use jumper P1 to select the MCC-FRIO ring speed, as shown in the table.
Ring Speed Setting Put Jumper P1 Sleeve Over
16 Mbps Pins 1 and 2 (Default setting)
4 Mbps Pins 2 and 3
QR.1.2 Selecting The Fiber Keying Type
The type of fiber key used depends on the de vice with which the port will
connect.
Cabletron Systems offers complete compatibility with vendor
NOTE
products that comply with the “new” 802.5J standard for fiber
RI/RO ports. Therefore, the MCC-FRIO offers connectivity to
products using 802.5J or Cabletron Systems fiber keying.
Port
RI
RO
Fiber Keying Type
Configuration
Connect to a RO port that is
using Cabletron fiber keyi
Connect to a RO port that is
using 802.5J fiber keying.
Connect to a RI port that is
using Cabletron fiber keying.
Connect to a RI port that is
using 802.5J fiber keying.
ng.
SW1
Switch Settings
1– On
(Default setting)
1– Off
Not applicable
SW2
Switch Settings
Not applicable
1– On
(Default setting)
1– Off
QR-2
Page 3
QR.2 LED FUNCTIONS
Consult the diagram to help interpret LED indications.
MCC-FRIO
P1
RI16 Mb
16 Mb
P1
PWR
RI
P
1
TX
RI
RX
RO
P2
TX
RO
RX
P
2
PWR
RO
P2
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.
QR-3
Page 4
RI And RO - Ports
The RI and
RO
LEDs indicate the status of the RI or RO port, as
described in the table below.
LED Activity Meaning
GREEN
Blinking GREEN
OFF Rx disconnected (signal loss).
Blinking RED
Rx and Tx connected fiber key received
(port open and operational).
The connection from the upstream device
to the Receive connection is complete but
the port is wrapped.
Speed-fault condition caused the port to
wrap.
QR-4
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