SMC Networks 6709L2, Руководство по установке

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C
ONNECTIVITY
R
ULES
2-5
Connectivity Rules
When adding hubs (repeaters) to your network, please follow the standard
connectivity rules for Ethernet and Fast 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
Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable Type Maximum Cable Length
Category 5, 5e, or 6 100-ohm UTP or STP 100 m (328 ft)
Maximum 1000BASE-SX Gigabit Ethernet Cable Length
Fiber Size Fiber Bandwidth Maximum Cable Length
62.5/125 micron
multimode fiber
160 MHz/km 2~220 m (7~722 ft)
200 MHz/km 2~275 m (7~902 ft)
50/125 micron
multimode fiber
400 MHz/km 2~500 m (7~1641 ft)
500 MHz/km 2~550 m (7~1805 ft)
Maximum 1000BASE-LX Gigabit Ethernet Cable Length
Fiber Size Fiber Bandwidth Maximum Cable Length
9/125 micron
single-mode fiber
N/A 2 m ~ 5 km (7~16404 ft)