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Chapter 4: Installing the Switch
4.11 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, we recommend that for all critical connections, or any new cable installations, you use
Category 5e or Category 6 cable. 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.
4.12 1000-Mbps Gigabit Ethernet Collision Domain
Table 4-3. 1000-Mbps Gigabit Ethernet collision domain.
Maximum 1000BASE-T Gigabit Ethernet cable domain.
Cable Type Maximum Cable Length Connector
Category 5, 5e, or 6
100-ohm UTP or STP
328 ft. (100 m) RJ-45
Maximum 1000BASE-SX Gigabit fiber cable length.
Fiber Size Fiber Bandwidth Maximum Cable Length Connector
62.5-/125-micron
multimode fiber
160 MHz/km
200 MHz/km
722 ft. (220 m)
902 ft. (275 m)
LC
50-/125-micron
multimode fiber
400 MHz/km
500 MHz/km
1641 ft. (500 m)
1805 ft. (550 m)
LC
Maximum 1000BASE-LX/LHX/XD/ZX Gigabit fiber cable length.
Fiber Size Fiber Bandwidth Maximum Cable Length Connector
9-/125-micron
single-mode fiber
1310 nm
N/A 6.2 miles (10 km) LC
9-/125-micron
single-mode fiber
1550 nm
N/A 18.64 miles
(30 km)
31.06 miles
(50 km)
LC
Maximum 1000BASE-LX Single Fiber Gigabit fiber cable length.
Fiber Size Fiber Bandwidth Maximum Cable Length Connector
Single-mode
TX: 1310 nm
RX: 1550 nm
N/A 12.42 miles (20 km) BIDI LC
Single-mode
TX: 1550 nm
RX: 1310nm
N/A 12.42 miles (20 km) BIDI LC
100-Mbps Fast Ethernet collision domain.
Cable Type Maximum Cable Length Connector
Category 5, 5e or 6
100-ohm
UTP or STP
328 ft. (100 m) RJ-45
