Cabletron Systems MCC-D2PM Quick Reference

The Complete Networking Solut

ion

MCC-D2PM QUICK REFERENCE

QR.1 SETTING JUMPERS

P1

P1

P3

P3

P2

P2

Location of Jumpers P1, P2, And P3

(Default Settings)

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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: 9032133-01 July, 1997

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QR.1.1 Joining The MAU Into One Ring

Each MA U can occupy one ring. This allo ws stations connected to the top
pair of lobe ports (labeled P1 and P2) to communicate with stations
connected to the bottom pair of lobe ports (labeled P3 and P4). Enable or
disable this feature using jumper P3, as shown in the following table.

Ring Configuration Put Jumper P3 Sleeve Over

MCC-D2PM split into two rings Pins 2 and 3 (Default setting)
All ports on the same ring Pins 1 and 2

If you split the MAU into two rings, you may need to set the speed of the
second ring.

QR.1.2 Selecting The Ring Speed(s)

Use jumper P1 to select the ring speed of the MCC-D2PM, as shown in
the table.

If the MCC-D2PM is split into two rings, then jumper P1

NOTE

controls the speed of the top two lobe ports (labeled P1
and P2).

Ring Speed Setting Put Jumper P1 Sleeve Over

16 Mbps Pins 1 and 2 (Default setting)
4 Mbps Pins 2 and 3

Use jumper P 2 to set the speed of the bottom ring (labeled P3 and P4)
when the MCC-D2PM has been configured as two MAUs on separate
rings. Otherwise, it is not used (in single ring mode).

Ring Speed Setting Put Jumper P2 Sleeve Over

16 Mbps Pins 1 and 2 (Default setting)
4 Mbps Pins 2 and 3

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