IBM 866251Y - Netfinity 5500 M20, Руководство по техническому обслуживанию аппаратной части

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automatically detects the data-transfer rate (10 Mbps or
100 Mbps) on the network and then sets the controller to
operate at the appropriate rate.
The Ethernet controller supports the auto-detection mode
only. When you install the device drivers and configure
the Ethernet controller for use with the operating system,
do not select the 10BASE-T mode. To ensure proper
operation of the controller, always select the default
parameters provided.
The following information describes the specifications for
the unshielded twisted-pair (UTP) cable that can be used
to connect the server to an IEEE Standard 802.3 network.
To connect the server 10BASE-T or 100BASE-TX port to a
10BASE-T or 100BASE-TX port on a repeater, use a UTP
cable with RJ-45 connectors at both ends. An EIA/TIA-568
Category 5 cable must be used for 10BASE-T and
100BASE-TX.
Attention
The 10BASE-T Ethernet and the 100BASE-TX Fast
Ethernet cabling in the network must be Category 5 or
higher to meet various standards, including
electromagnetic compatibility.
The cables used in 10BASE-T or 100BASE-TX link
segments do not require grounding. However, all devices
connected to the cables must be grounded.
Connect the appropriate type of UTP cable to the repeater.
Ÿ
If the port on the repeater is a crossover port (also
called an MDI-X port), use a UTP cable that is wired
as a straight-through cable.
Ÿ
If the port on the repeater is not a crossover port
(also known as an MDI port), use a UTP cable that is
wired as a crossover cable.
Do not use telephone extension cables to connect the
server to a repeater. The wire pairs in those cables are
not twisted, and the cables do not meet other requirements
for use in a 10BASE-T or 100BASE-TX network. You can
identify telephone extension cables by their flat and thin
appearance. UTP cables are rounder and thicker than
telephone extension cables.
Table 1 on page 38 describes the specifications for UTP
cables used in 10BASE-T and 100BASE-TX link segments.
Cables for these link segments must be certified as
EIA/TIA-568 Category 5.
Netfinity 5500 M20 - Type 8662
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