IBM 8275-416, Руководство пользователя

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Hardware
Cabling requirements
Ethernet cables are not provided and must be separately purchased. You can order
them through your IBM representative.
Table 1 shows cable type and length requirements. Cable requirements depend on
the speed of the network. Cables and connecting hardware must meet the
standards specified in the ANSI/TIA/EIA 856-A or CSA T529 standards.
Table 1. Ethernet cable requirements
Ethernet Type Cable Requirements Max. Cable Length
10BASE-T Category 3, 4 or 5 100-ohm STP/UTP
cable 100 m (328 ft)
100BASE-TX Category 5, 100-ohm STP or UTP
cable and connecting hardware 100 m (328 ft)
100BASE-FX 62.5-micron multimode fiber (MMF)
cabling 2 km (6561 ft) at full-duplex; 412
m (1352 ft) at half-duplex
1000BASE-SX 50/125-micron or 62.5-micron
multimode fiber (MMF) cabling 550 m (1804 ft) at full-duplex.
10/100BASE-TX
10BASE-T connections are MDX ports and operate correctly with standard
Category 3, 4, or 5 100-ohm UTP or STP cable and connecting hardware,
as specified in the ANSI/TIA/EIA 856-A or CSA T529 standards when
connected to MDI ports. When connecting to other MDX ports, such as
ports of other 8275-416 switches, you must use crossover cables.
Do not use telephone extension cables in 10/100BASE-TX networks. The
wire pairs in those cables are not twisted and the cables do not meet other
requirements for use in a 10BASE-T network.
For connections to 10/100BASE-TX networks, you can use only Category 5
STP or UTP cables.
100BASE-FX
For connection to 100BASE-FX networks, you can use only 62.5/125 MMF
cabling with MTRJ connectors.
1000BASE-SX
For connection to 1000BASE-SX networks, you can use 62.5/125 µm or
50/125 µm multi-mode fiber (MMF) cabling with SC fiber optic connectors.
Chapter 1. Introduction
7