IBM 86625RY Hardware Maintenance Manual - Page 45
The 10BASE-T Ethernet and the 100BASE-TX Fast, An EIA/TIA-568
![]() |
UPC - 087944501855
View all IBM 86625RY manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 45 highlights
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. 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. 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 37
![](/manual_guide/products/ibm-86625ry-hardware-maintenance-manual-7f818c4/45.png)