HP invent ProCurve J4908A Installation Manual page 18

100-FX MTRJ gl Module
���������
� � � � �
� � � �
���������� � ��
������������
����������
�������
multimode fiber-optic cable
with MT-RJ connector
N o t e
Module
� � � � �� ��
���������������������
� � � � � �� ��
100-FX port with
MT-RJ connector
Automatic Cable Sensing on Twisted Pair Ports:
When the ports for the 10/100-TX gl Module and the 100/1000-T gl Module are
in their default configuration, Auto, both modules automatically negotiate
whether the ports operate as MDI or MDI-X, depending on the cable type and
the connected device's operation. As a result, you can use either straight-
through or crossover twisted-pair cable for all network connections to these
modules.
On the 10/100-TX gl Module, this feature is identified as HP Auto-MDIX; on
the 100/1000-T gl Module, it is identified as Auto MDI/MDI-X and it is part of
the IEEE 802.3ab standard. Both features operate the same.
Operation of this feature depends on the port configurations being kept at
Auto. If the configuration is changed to one of the available fixed options
though (for example, 100-Full Duplex), the port operates as an MDI-X port. In
that case, to connect the module to another switch or hub, use a crossover
cable; to connect to an end node, use a straight-through cable.
Cable Type
multimode fiber-optic
cables that are fitted with
MT-RJ connectors.
��
��
��
������
Installing the gl Modules
Maximum Length
• full-duplex
connections:
2 kilometers
• half-duplex
connections:
412 meters
11