C
HAPTER
3
| Making Network Connections
Connectivity Rules
– 48 –
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 802.3ab standards.
1000 MBPS GIGABIT ETHERNET COLLISION DOMAIN
Table 4: 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 5: Maximum 1000BASE-SX Gigabit Ethernet Cable Lengths
Fiber Size Fiber Bandwidth Maximum Cable Length Connector
62.5/125 micron
multimode fiber
160 MHz/km 2-220 m (7-722 ft) LC
200 MHz/km 2-275 m (7-902 ft) LC
50/125 micron
multimode fiber
400 MHz/km 2-500 m (7-1641 ft) LC
500 MHz/km 2-550 m (7-1805 ft) LC
Table 6: Maximum 1000BASE-LX Gigabit Ethernet Cable Length
Fiber Size Fiber Bandwidth Maximum Cable Length Connector
9/125 micron single-
mode fiber
N/A 2 m - 10 km (7 ft - 6.2 miles) LC
Table 7: Maximum 1000BASE-LH Gigabit Ethernet Cable Length
Fiber Size Fiber Bandwidth Maximum Cable Length Connector
9/125 micron single-
mode fiber
N/A 2 m - 70 km
(7 ft - 43.5 miles)
LC
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