Black Box LGB5128A 4.11 1000BASE-TCable Requirements, Installing the Switch, Page, blackbox.com

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	328 ft. (100 m)	RJ-45
100-ohm UTP or STP
Maximum 1000BASE-SX Gigabit fiber cable length.
Fiber Size	Fiber Bandwidth	Maximum Cable Length	Connector
62.5-/125-micron	160 MHz/km	722 ft. (220 m)	LC
multimode fiber	200 MHz/km	902 ft. (275 m)
50-/125-micron	400 MHz/km	1641 ft. (500 m)	LC
multimode fiber	500 MHz/km	1805 ft. (550 m)
Maximum 1000BASE-LX/LHX/XD/ZX Gigabit fiber cable length.
Fiber Size	Fiber Bandwidth	Maximum Cable Length	Connector
9-/125-micron	N/A	6.2 miles (10 km)	LC
single-mode fiber
1310 nm
9-/125-micron	N/A	18.64 miles	LC
single-mode fiber		(30 km)
1550 nm		31.06 miles
		(50 km)
Maximum 1000BASE-LX Single Fiber Gigabit fiber cable length.
Fiber Size	Fiber Bandwidth	Maximum Cable Length	Connector
Single-mode	N/A	12.42 miles (20 km)	BIDI LC
TX: 1310 nm
RX: 1550 nm
Single-mode	N/A	12.42 miles (20 km)	BIDI LC
TX: 1550 nm
RX: 1310nm
100-Mbps Fast Ethernet collision domain.
Cable Type	Maximum Cable Length	Connector
Category 5, 5e or 6	328 ft. (100 m)	RJ-45
100-ohm
UTP or STP

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