Cabletron Systems MCC-DFL Quick Reference
The Complete Networking Soluti
on
MCC-DFL QUICK REFERENCE
QR.1 SETTING SWITCHES AND JUMPERS
SW1
1234
OFF
OFF
1234
ON
ON
SW1
1234
P1
P2
1234
SW2
P1
P2
SW2
(From back of card)
SW1 (FOT-A or RI)
Switch Configuration Table
SW2 (FOT-B or RO)
Notes: SW1 switchblock manages FOT-A.
SW2 switchblock manages FOT-B.
Individual switches on each
On – Cabletron fiber key
1
Off – 802.5J fiber key
switchblock have the same
functionality.
On – RO or lobe (RJ45 port)
2
Off – RI or station (RJ45 port)
Jumper P1 controls ring speed of
FOT-A.
Jumper P2 controls ring speed of
On – Autowrap enable (RJ45 port)
3
Off – Autowrap disable (RJ45 port)
FOT-B.
On – Station and lobe application
4
Off – RI and RO application
Location of SW1/SW2 Switchblocks And Jumpers P1/P2
(Default Settings)
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: 9032131-01 July, 1997
QR-1
QR.1.1 Selecting Port Configurations
Configuration Switch Settings Example
RJ45 port as a lobe
Fiber ST port as a station
(Default configuration)
RJ45 port as a station
Fiber ST port as a lobe
RJ45 port as a RI
Fiber ST port as a RO
RJ45 port as a RO
Fiber ST port as a RI
Station
1 – Off
2 – On
3 – Off
4 – On
1 – Off
2 – Off
3 – Off
4 – On
1 – On or Off
2 – Off
3 – On or Off
4 – Off
1 – On or Off
2 – On
3 – On or Off
4 – Off
MCC-DFL
A
B
C
D
Phantom Current
Phantom Current
P1
PWR
P2
16 Mb
P
1
F
O
TX
T
A
P
2
RX
P1
PWR
P2
16 Mb
TX
P
1
F
O
RX
T
B
P
2
Example A
Concentrator
Fiber Key
Fiber Key
QR-2
MMAC
Phantom Current
Concentrator
Phantom Current
Example B
MCC-DFL
PWR
16 Mb
P
1
F
O
T
A
P
2
PWR
16 Mb
P
1
F
O
T
B
P
2
P1
P2
TX
Fiber Key
RX
P1
P2
TX
Station
Fiber Key
RX
MMAC
Ring Out To Ring In
Ring Out To Ring In
MCC-DFL
P1
PWR
P2
16 Mb
P
1
F
O
TX
T
A
P
2
PWR
16 Mb
P
1
F
O
T
B
P
2
Ring Out To Ring In
RX
P1
P2
TX
Ring Out To Ring In
RX
Example C
MMAC
QR-3
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