Black Box LH8112A-S, LH8124A manual 30 10/100 Managed Hub, Module LH8100C-3TX Bridge Jumpers

Module LH8100C-3TX

Module LH8100C-3TX is a 3-port bridge module with a two port internal bridge for bridging 10Mbps and 100Mbps segments and an external 10/100BASE-TX distance extender with MDI-X and MDI-II interfaces using an RJ-45 cable. Both of these functions can be enabled at one time, in fact, the distance extender is always enabled. 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 and External enabled (Default)

•Backpressure setting: Disabled (Default)

Module LH8100C-3TX Bridge Jumpers

The default jumper setting of the internal bridge of Module LH8100C- 3TX is enabled. The external distance extender is always enabled. To disable the internal bridge, change the jumpers (JP2, J4 ~ JP6) from 2&3 to 1&2.

Jumpers JP2, JP4 ~ JP6

•1&2 connected = internal bridge is disabled

•2&3 connected = internal bridge is enabled (Default)

Module LH8100C-3TX Backpressure Jumpers

The default jumper setting for backpressure is disabled. To enable the backpressure function, change JP1 and JP7 jumpers to 2&3.

Jumpers JP1, JP7

•1&2 = disabled (Default)

•2&3 = enabled

2 3 Ports

Switch Module

LINK 100M

TX FDX

RX COL

	100BASE-TX
MDI-X	MDI-II

30 10/100 Managed Hub