Cabletron Systems MCC-D2PM Reference guide

Brand: Cabletron Systems

Model: MCC-D2PM

Type: Reference guide

QR-1

MCC-D2PM QUICK REFERENCE

QR.1 SETTING JUMPERS

Location of Jumpers P1, P2, And P3

(Default Settings)



Printed in the United States of America

Order Number: 9032133-01 July, 1997

The Complete Networking Solut

ion

QR-2

QR.1.1 Joining The MAU Into One Ring

Each MAU can occupy one ring. This allows 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.

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.

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 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

NOTE

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

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

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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QR.1.3 Summary Of Jumper Settings

QR.2 LED FUNCTIONS

Consult the diagram to help interpret LED indications.

MCC-D2PM LEDs

Only reposition the jumpers listed in the table below. All other

jumpers are set at the factory and should not be repositioned.

Note the position of these jumpers and switches for future

reference.

Jumper Setting

Sleeve over Pins 1 and 2 – 16 Mbps

Sleeve over Pins 2 and 3 – 4 Mbps

Sleeve over Pins 1 and 2 – Bottom ring speed 16 Mbps

Sleeve over Pins 2 and 3 – Bottom ring speed 4 Mbps

Sleeve over Pins 2 and 3 – Ports divided into two rings

Sleeve over Pins 1 and 2 – All ports on the same ring

Note

: Default settings (set at the factory) are in

bold

MCC-D2PM

16 Mb

PWR

16 Mb

2 RINGS

P216 Mb

PWR

P416 Mb

2 RINGS

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PWR - Power

The

PWR

LED remains lighted GREEN during normal operation,

indicating the reception of power. If the LED is off, the CM is not

receiving power.

2 Rings - CM Split

The

2 Rings

LED lights YELLOW to indicate the CM is split into two

rings. An unlit LED means all four ports are on the same ring.

16 Mb - Ring Speed(s)

Each 2-port MAU has a

16 Mb

LED. The LED lights YELLOW to

indicate a 16 Mbps ring speed on the associated MAU. An unlit LED

indicates a ring speed of 4 Mbps on the associated MAU.

If the MCC-D2PM has only one ring then the status of the top

16 Mb

LED indicates the speed of the entire MCC-D2PM. The bottom

LED will be off.

P1, P2, P3, And P4 - Ports

The

, and

LEDs indicate the status of the associated lobe

port, as described in the table.

LED Activity Meaning

GREEN Phantom current present (port inserted).

OFF No phantom current present.

Blinking RED

Speed-fault condition caused the port to

wrap.

Cabletron Systems MCC-D2PM Reference guide

Brand: Cabletron Systems

Model: MCC-D2PM

Type: Reference guide

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Cabletron Systems MCC-D2PM Reference guide

Cabletron Systems MCC-D2PM Reference guide

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