C
ONNECTIVITY
R
ULES
4-9
1000 Mbps Gigabit Ethernet Collision Domain
Note: For link spans exceeding 70 km, you may need to use premium
single mode fiber or dispersion shifted single mode fiber.
Table 4-1 Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable Type Maximum Cable
Length
Connector
Category 5, 5e, 6 100-ohm UTP or
STP
100 m (328 ft) RJ-45
Table 4-2 Maximum 1000BASE-SX Gigabit Ethernet Cable Length
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 4-3 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 - 5 km (7 ft - 3.2
miles)
LC
Table 4-4 Maximum 1000BASE-ZX Gigabit Ethernet Cable Length
Fiber Size Fiber
Bandwidth
Maximum Cable
Length
Connector
9/125 micron
single-mode fiber
N/A 70 m - 100 km (43 ft -
62 miles)
LC