new cable installations,
Category 5e or
Category 6 cable should
be used. The Category
5e and 6 specifications
include 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 5: Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable Type
Maximum Cable Length
Connector
Category 5, 5e or 6 100-ohm
UTP or STP
100.m (328 ft)
RJ-45
Table 6: Maximum 1000BASE-SX Gigabit Fiber Cable Lengths
Fiber Size
Fiber Bandwidth
Maximum Cable Length
Connector
62.5/125 micron
multimode fiber
160 MHz/km
200 MHz/km
220 m (722 ft)
275 m (902 ft)
LC
LC
50/125 micron
multimode fiber
400 MHz/km
500 MHz/km
500 m (1641 ft)
550 m (1805 ft)
LC
LC
Table 7: Maximum 1000BASE-LX/LHX/XD/ZX Gigabit Fiber Cable Length
Fiber Size
Fiber Bandwidth
Maximum Cable Length
Connector
9/125 micron
single-mode fiber
1310nm
N/A
10km (6.2 miles)
LC
9/125 micron
single-mode fiber
1550nm
N/A
30km (18.64 miles)
50km (31.06 miles)
LC
LC
Table 8: Maximum 1000BASE-LX Single Fiber Gigabit Fiber Cable Length
Fiber Size
Fiber Bandwidth
Maximum Cable Length
Connector
Single-mode
TX-1310nm
RX-1550nm
N/A 20km
(12.42miles)
BIDI
LC
Single-mode
TX-1550nm
RX-1310nm
N/A 20km
(12.42miles)
BIDI
LC
100 MBPS FAST ETHERNET COLLISION DOMAIN
Table 9: Maximum Fast Ethernet Cable Lengths
Cable Type
Maximum Cable Length
Connector
Category 5, 5e or 6 100-ohm
UTP or STP
100.m (328 ft)
RJ-45
2
