HP procurve switch xl modules, Руководство по установке

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HP ProCurve Switch xl Modules
Installing the Modules
N o t e
Automatic Cable Sensing on Twisted-Pair Ports:
When the ports for the 10/100-TX, 100/1000-T, 10/100/1000-T, and the PoE xl
Modules are in their default configuration,
Auto , they 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 and PoE xl Modules, this feature is identified as HP Auto-
MDIX
; on the 100/1000-T and the 10/100/1000-T xl Modules, 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 these features depend on the port configurations being kept at
Auto . If the configuration is changed to one of the available fixed options (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.