IBM 847691U Hardware Maintenance Manual - Page 61

Specifications (Ethernet cable), When the green LED is on, it indicates that

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Specifications (Ethernet cable) This appendix contains the specifications for the unshielded twisted-pair (UTP) cables that can be used to connect the server to an IEEE Standard 802.3 network. The Ethernet controller on the system board provides 10BASE-T and 100BASE-TX support through the RJ-45 connector on the back of the server. When you connect the server to the network, the Ethernet controller 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 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. Attention: To connect the server's 10BASE-T or 100BASE-TX port to a repeater, use an UTP EIA/TIA-568 Category 5 cable that is terminated with RJ-45 connectors. This is a requirement to meet various governmental 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. 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. 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. The server contains three diagnostic light-emitting diodes (LEDs) for the Ethernet connector, one located on the front and two located on the rear of the server. When the green LED is on, it indicates that the Ethernet controller is connected to a hub or switch and is receiving link pulses. This LED is also known as the Link OK light. When the amber LED is on, it indicates that the Ethernet network is operating at 100 Mbps. When this LED is off, it indicates that the Ethernet network is operating at 10 Mbps. 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. IBM Netfinity 3000 - Type 8476 53

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Specifications (Ethernet cable)
This appendix contains the specifications for the
unshielded twisted-pair (UTP) cables that can be used to
connect the server to an IEEE Standard 802.3 network.
The Ethernet controller on the system board provides
10BASE-T and 100BASE-TX support through the RJ-45
connector on the back of the server.
When you connect
the server to the network, the Ethernet controller
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 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.
Attention:
To connect the server's 10BASE-T or 100BASE-TX port to
a repeater, use an UTP EIA/TIA-568 Category 5 cable that
is terminated with RJ-45 connectors.
This is a requirement
to meet various governmental 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.
±
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.
±
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.
The server contains three diagnostic light-emitting diodes
(LEDs) for the Ethernet connector, one located on the front
and two located on the rear of the server.
±
When the green LED is on, it indicates that the
Ethernet controller is connected to a hub or switch
and is receiving link pulses.
This LED is also known
as the Link OK light.
±
When the amber LED is on, it indicates that the
Ethernet network is operating at 100 Mbps.
When
this LED is off, it indicates that the Ethernet network
is operating at 10 Mbps.
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.
IBM Netfinity 3000 - Type 8476
53