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Cabletron Systems MCC-DFL Quick Reference

Fiber link conversion module, setting switches and jumpers
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MCC-DFL QUICK REFERENCE
QR.1
SETTING SWITCHES AND JUMPERS
SW1
Notes: SW1 switchblock manages FOT-A.
SW2 switchblock manages FOT-B.
Individual switches on each
switchblock have the same
functionality.
Jumper P1 controls ring speed of
FOT-A.
Jumper P2 controls ring speed of
FOT-B.
Location of SW1/SW2 Switchblocks And Jumpers P1/P2
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
The Complete Networking Solution
SW1
P1
P2
SW2
SW2
(Default Settings)
P1
P2
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)
On – Autowrap enable (RJ45 port)
3
Off – Autowrap disable (RJ45 port)
On – Station and lobe application
4
Off – RI and RO application
QR-1

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Summary of Contents for Cabletron Systems MCC-DFL

  • Page 1 The Complete Networking Solution MCC-DFL QUICK REFERENCE QR.1 SETTING SWITCHES AND JUMPERS Notes: SW1 switchblock manages FOT-A. SW2 switchblock manages FOT-B. Individual switches on each switchblock have the same functionality. Jumper P1 controls ring speed of FOT-A. Jumper P2 controls ring speed of FOT-B.
  • Page 2 2 – Off 3 – On or Off 4 – Off 1 – On or Off 2 – On 3 – On or Off 4 – Off MCC-DFL 16 Mb Concentrator Fiber Key 16 Mb Fiber Key Example A Example...
  • Page 3 Phantom Current MMAC Concentrator Phantom Current Ring Out To Ring In MMAC Ring Out To Ring In MCC-DFL 16 Mb Fiber Key 16 Mb Fiber Key Example B MCC-DFL 16 Mb Ring Out To Ring In 16 Mb Ring Out To Ring In...
  • Page 4 Ring Out To Ring In QR.1.2 Selecting The Ring Speed(s) The jumpers P1 and P2 are used to select the MCC-DFL’s ring(s) speed. Use jumper P1 to set the ring speed of FOT-A, as shown in the table. Ring Speed of FOT-A...
  • Page 5 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-DFL offers connectivity to products using 802.5J or Cabletron Systems fiber keying. Keying Type for Fiber RI/RO ST Port * Connection to Cabletron compliant devices Connection to 802.5J compliant devices...
  • Page 6 Switch 3 When the FOT is being used as a RI/RO device this switch enables or disables the autowrap feature on the RJ45 port. It has no relevance to station/lobe applications. The feature should be enabled to connect to Cabletron devices or disabled to connect to non-Cabletron devices. Set Switch 3 as shown in the table.

  • Page 7: Led Functions

    16 Mb PWR - Power The PWR LED lights GREEN during normal operation, indicating the reception of power. If the LED is off, the MCC-DFL is not receiving power. 16 Mb - Ring Speed Each FOT has a 16 Mb LED. The LEDs lights YELLOW to indicate a 16 Mbps ring speed on the associated FOT.
  • Page 8 On FOT-B, the P1 LED indicates the status of the fiber ST port and the P2 LED indicates the status of the RJ45 port. The P1 and P2 LEDs act differently on FOTs configured for NOTE station/lobe applications than they do for FOTs configured for RI/RO applications.
  • Page 9 P1 And P2 LEDs For RI And RO Ports The P1 and P2 LEDs indicate the status of the RI/RO ports as described in the table. Port LED Activity GREEN Blinking GREEN RJ45 RI/RO Blinking RED GREEN Blinking GREEN Fiber RI/RO Blinking RED Meaning...
  • Page 10 QR-10...