Connectivity Rules; 1000Base-T Cable Requirements; 1000 Mbps Gigabit Ethernet Collision Domain; Table 4-1 Maximum 1000Base-T Gigabit Ethernet Cable Length - SMC Networks EZ Switch SMCGS8P-Smart Installation Manual

4
Making Network Connections

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 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 802.3-2005 standards.

1000 Mbps Gigabit Ethernet Collision Domain

Cable Type
Category 5, 5e, 6 100-ohm UTP or STP
Fiber Diameter
62.5/125 micron multimode
fiber (MMF)
50/125 micron multimode fiber
(MMF)
Fiber Diameter
9/125 micron single-mode fiber N/A
Fiber Diameter
9/125 micron single-mode fiber N/A
4-6

Table 4-1 Maximum 1000BASE-T Gigabit Ethernet Cable Length

Table 4-2 Maximum 1000BASE-SX Fiber Optic Cable Length

Fiber Bandwidth
160 MHz/km
200 MHz/km
400 MHz/km
500 MHz/km

Table 4-3 Maximum 1000BASE-LX Fiber Optic Cable Length

Fiber Bandwidth

Table 4-4 Maximum 1000BASE-LH Fiber Optic Cable Length

Fiber Bandwidth
Maximum Cable Length
100 m (328 ft)
Cable Length Range
2-220 m (7-722 ft)
2-275 m (7-902 ft)
2-500 m (7-1641 ft)
2-550 m (7-1805 ft)
Cable Length Range
2 m - 5 km
(7 ft - 3.2 miles)
Cable Length Range
2 m - 70 km
(7 feet - 43 miles)
Connector
RJ-45
Connector
LC
LC
LC
LC
Connector
LC
Connector
LC