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CONFIGURATION RULES

 

Configuration Rules for Gigabit Ethernet

Gigabit Ethernet is designed to run over several media:

Single-mode fiber optic cable, with connections up to 5 km

(3.1 miles). Support for distances over 5 km is supported depending on the module specification.

Multimode fiber optic cable, with connections up to 550 m (1804 ft).

Category 5 cabling, with connections up to 100 m (328 ft).

The different types of Gigabit Ethernet media and their specifications are detailed in Table 7.

Table 7 Gigabit Ethernet cabling

 

 

 

Modal

Lengths Supported

Gigabit Ethernet

 

 

Bandwidth

Specified by IEEE

Transceivers

Fiber Type

(MHz/km)

(meters)

 

 

 

 

1000BASE-LX

62.5 m MM

500

2–550

 

50

m MM

400

2–550

 

50

m MM

500

2–550

 

10

m SM

N/A

2–5000

1000BASE-SX

62.5 m MM

160

2–220

 

62.5 m MM

120

2–275

 

50

m MM

400

2–500

 

50

m MM

500

2–550

1000BASE-T

N/A

N/A

100

MM = Multimode SM = Single-mode

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3Com 3 manual Configuration Rules for Gigabit Ethernet