Configuration Rules; Configuration Rules For Gigabit Ethernet - 3Com SuperStack 3 3812 Implementation Manual

A

Configuration Rules

for Gigabit
Ethernet
C
ONFIGURATION
Gigabit Ethernet is designed to run over several media:
Single-mode fiber optic cable, with connections up to 5 km
■
(3.1 miles).
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 6.
Table 6 Gigabit Ethernet cabling
Gigabit Ethernet
Transceivers Fiber Type
62.5 µm MM
1000BASE-LX
50 µm MM
50 µm MM
10 µm SM
62.5 µm MM
1000BASE-SX
62.5 µm MM
50 µm MM
50 µm MM
1000BASE-T N/A
MM = Multimode SM = Single-mode
R
ULES
Modal Lengths Supported
Bandwidth Specified by IEEE
(MHz/km) (meters)
500 2–550
400 2–550
500 2–550
N/A 2–5000
160 2–220
120 2–275
400 2–500
500 2–550
N/A 100