Network Ports; Port Led Types - HP ProCurve 10/100 12 Installation Manual

Network Ports

The HP 10/100 Network Ports are as follows:
12 or 24 10/100Base-T RJ-45 ports
one MDI/MDI-X port (port 1).
All the fixed twisted-pair ports are wired as MDI-X. Therefore, to connect end
nodes or other MDI-type devices to these ports, use "straight-through" twisted-
pair cable; to connect hubs, switches, or other MDI-X-type devices to these
ports, use "crossover" twisted-pair cable. See Appendix B, "Cables and
Connectors" for descriptions of these cables. If you only have straight-through
cable, you can use port 1 with the MDI button depressed to connect hubs with
switches and other hubs. The MDI button crosses the cable pairs so that the
Transmit and Receive pins on connecting devices exchange signals correctly.

Port LED Types

There are two types of port LEDs:
Link. This LED highlights the port number. When lit, these LEDs indicate the
port has detected another device. If the 100 LED is not lit, then the Link LED
indicates a connection to an attached 10Base-T device.
100. This LED highlights the rectangle LED under the Link LED. When lit,
these LEDs indicate the port is connected to an attached device operating at
100Mbps. The following figure shows an HP 10/100 LED operating at 100Mbps.
See the following sections for more LED detail.
Link LED. Indicates
whether the port has
detected an attached
device. If the 100 LED is not
lit, then the device is
operating at 10Mbps
Introducing the HP ProCurve 10/100 Hubs
Front of the Hubs
100 LED. Indicates whether
the device connected to this
port was detected to be
100Mbps.
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