METRObility Optical Systems 8124-01-M - Manual (Page 28)

28 CenturyStack 8100 Managed Hub
Module 8102-01-X
Module 8102-01-X is either an internal bridge for bridging the internal
10Mbps and 100Mbps segments or an external 10/100BASE-TX distance
extender with MDI-X and MDI-II interfaces using an RJ-45 cable. Only
one of these functions can be enabled at one time. The internal or external
bridge must be enabled or disabled with on board jumpers before installa-
tion. Module flow-control (backpressure) can be enabled or disabled by
setting the on board jumpers before installation. The default settings are
as follows:
• Bridge Function setting: Internal (Default)
• Backpressure setting: Disabled (Default)
Module 8102-01-X Bridge Jumpers
The default jumper setting of the 8102-01-X module is internal bridge
enabled. To disable the internal bridge and enable the external bridge,
change the jumpers (JP1~JP16) from 1&2 to 2&3.
Jumpers JP1~JP16
•
1&2 connected = internal bridge is enabled (Default)
• 2&3 connected = external bridge is enabled
Module 8102-01-X Backpressure Jumpers
The default jumper setting for backpressure is disabled. To enable the
backpressure function, change JP18 jumper to 2&3.
Jumper JP18
•
1&2 =disabled (Default)
• 2&3 = enabled
100M
3 Ports
Switch Module
FDX
COL
LINK
TX
RX
100BASE-TX
MDI-II MDI-X
2