Cabletron Systems MCC-D2PM Quick Reference page 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.
Ring Configuration
MCC-D2PM split into two rings
All ports on the same ring
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
16 Mbps
4 Mbps
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
16 Mbps
4 Mbps
QR-2
Put Jumper P3 Sleeve Over
Pins 2 and 3 (Default setting)
Pins 1 and 2
Put Jumper P1 Sleeve Over
Pins 1 and 2 (Default setting)
Pins 2 and 3
Put Jumper P2 Sleeve Over
Pins 1 and 2 (Default setting)
Pins 2 and 3