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1000BASE-T Cable Requirements
All Category 5 UTP cables that are used for 100BASE-TX connections should also
work for 1000BASE-T, providing that all four wire pairs are connected. However, it is
recommended that for all critical connections, or any new cable installations,
Category 5e (enhanced Category 5) or Category 6 cable should be used. The
Category 5e specification includes test parameters that are only recommendations
for Category 5. Therefore, the first step in preparing existing Category 5 cabling for
running 1000BASE-T is a simple test of the cable installation to be sure that it
complies with the IEEE 802.3-2005 standards.
1000 Mbps Gigabit Ethernet Collision Domain
Table 4-1 Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable Type
Category 5, 5e, 6 100-ohm UTP or STP
Table 4-2 Maximum 1000BASE-SX Gigabit Ethernet Cable Length
Fiber Size
62.5/125 micron
multimode fiber
50/125 micron multimode
fiber
Table 4-3 Maximum 1000BASE-LX Gigabit Ethernet Cable Length
Fiber Size
9/125 micron
single-mode fiber
Table 4-4 Maximum 1000BASE-ZX Gigabit Ethernet Cable Length
Fiber Size
9/125 micron
single-mode fiber
Note: For link spans exceeding 70 km, you may need to use premium single mode fiber or
dispersion shifted single mode fiber.
100 Mbps Fast Ethernet Collision Domain
Type
Cable Type
100BASE-TX Category 5 or better 100-ohm UTP or STP 100 m (328 ft)
Maximum Cable Length
100 m (328 ft)
Fiber Bandwidth
160 MHz/km
200 MHz/km
400 MHz/km
500 MHz/km
Fiber Bandwidth
N/A
Fiber Bandwidth
N/A
Table 4-5 Maximum Fast Ethernet Cable Length
Connectivity Rules
Maximum Cable Length
2-220 m (7-722 ft)
2-275 m (7-902 ft)
2-500 m (7-1641 ft)
2-550 m (7-1805 ft)
Maximum Cable Length
2 m - 5 km (7 ft - 3.2 miles) LC
Maximum Cable Length
70 km - 100 km
(43 - 62 miles)
Max. Cable Length
4
Connector
RJ-45
Connector
LC
LC
LC
LC
Connector
Connector
LC
Connector
RJ-45
4-5
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