xl Modules Installation Guide 2007-12

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ProCurve Switch xl Modules
Installing the Modules
Note 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.
Verifying the Network Connections Are Working
Check the port LEDs for the newly-installed module to ensure the port(s)
connected in the preceding step are operating correctly. Each port on the
switch modules has Link and Mode LEDs near it as shown in the next
illustration.
Figure 19. Example Link and Mode LEDs
■ If you have installed and connected an PoE xl module (J8161A), ensure
the module is receiving power from the 600 RPS/EPS and the PDs are
receiving PoE power from the module.
Link and Mode LEDs