Connectivity Rules; 1000Base-T Cable Requirements; 1000 Mbps Gigabit Ethernet Collision Domain; 100 Mbps Fast Ethernet Collision Domain - AMX NXA-ENET8-2POE Operation/Reference Manual

Connectivity Rules

When adding hubs (repeaters) to your network, please follow the connectivity rules listed in the manuals for
these products. However, note that because switches break up the path for connected devices into separate
collision domains, you should not include the switch or connected cabling in your calculations for cascade
length involving other devices.

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, it is recommended that for all critical connections,
or any new cable installations, Category 5e (enhanced Category 5) 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

Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable Type
Category 5, 5e, or 6 100-ohm UTP or STP
Maximum 1000BASE-SX Gigabit Ethernet Cable Lengths
Fiber Size
62.5/125 micron multimode fiber
50/125 micron multimode fiber
Maximum 1000BASE-LX Gigabit Ethernet Cable Length
Fiber Size
9/125 micron single-mode fiber
Maximum 1000BASE-LH Gigabit Ethernet Cable Length
Fiber Size
9/125 micron single-mode fiber

100 MBPS Fast Ethernet Collision Domain

Maximum 100BASE-FX Cable Length
Type
100BASE-FX
Maximum Fast Ethernet Cable Length
Type
100BASE-TX

10 MBPS Ethernet Collision Domain

Maximum Ethernet Cable Length
Type
100BASE-T
NXA-ENET8-2POE Gigabit Ethernet Layer 2 PoE Switch
Fiber Bandwidth
160 MHz/km
200 MHz/km
400 MHz/km
500 MHz/km
Fiber Bandwidth
N/A
Fiber Bandwidth
N/A
Fiber Type
9/125 micron single-mode fiber
62.5/125 or 50/125 multimode fiber
Cable Type
Category 5 or better 100-ohm UTP or STP
Cable Type
Category 3 or better 100-ohm UTP
Network Connections
Maximum Cable Length
100 m (328 ft)
Maximum Cable Length
2-220 m (7-722 ft)
2-275 m (7-902 ft)
2-500 m (7-1641 ft)
2-550 m (7-1805 ft)
Maximum Cable Length
2 m - 10 km (7 ft - 6.2 miles)
Maximum Cable Length
2 m - 80 km (7 ft - 50 miles)
Maximum Cable Length
2 m - 20 km (7 ft - 12.43 miles)
up to 2 km (1.24 miles)
Maximum Cable Length
100 m (328 ft)
Maximum Cable Length
100 m (328 ft)
Connector
RJ-45
Connector
LC
LC
LC
LC
Connector
LC
Connector
LC
Connector
LC
LC
Connector
RJ-45
Connector
RJ-45
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