SMC Networks 6750L2, Руководство по установке

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N
ETWORK
P
LANNING
2-6
Connectivity Rules
When adding hubs (repeaters) to your network, please follow the
connectivity rules listed below for Ethernet, Fast Ethernet, and Gigabit
Ethernet. 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.
1000 Mbps Gigabit Ethernet Collision Domain
Note:
Although maximum cable length for 100BASE-FX fiber depends
on the duplex mode, the maximum length for 1000BASE-X fiber
is the same for both half and full duplex.
Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable Type Maximum Cable Length
Category 5, 5e 100-ohm UTP or STP 100 m (328 ft)
Maximum 1000BASE-SX Fiber Optic Cable Distance
Fiber Diameter Fiber Bandwidth Cable Length Range
62.5/125 micron
multimode fiber (MMF)
160 MHz/km 2-220 m (7-722 ft.)
200 MHz/km 2-275 m (7-902 ft.)
50/125 micron MMF 400 MHz/km 2-500 m (7-1641 ft.)
500 MHz/km 2-550 m (7-1805 ft.)
Maximum 1000BASE-LX Fiber Optic Cable Distance
Fiber Diameter Fiber Bandwidth Cable Length Range
9/125 micron single-mode
fiber (SMF)
N/A 2 m - 5 km (7-16,404 ft)