Connectivity Rules; 1000 Mbps Gigabit Ethernet Collision Domain; Maximum Fiber Optic Cable Distance For 1000Base-Sx - SMC Networks 48-Port Installation Manual

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ETWORK LANNING

Connectivity Rules

When adding hubs (repeaters) to your network, please follow the
connectivity rules listed below for Ethernet, Fast Ethernet, or
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

Maximum Fiber Optic Cable Distance for 1000BASE-SX

Fiber Size
62.5/125 micron
50/125 micron
Note: Although maximum cable length for 100BASE-FX fiber
depends on the duplex mode, the maximum length for
1000BASE-SX fiber is the same for both half and full
duplex.
2-6
Fiber Bandwidth
160 MHz/km
200 MHz/km
400 MHz/km
500 MHz/km
Maximum Cable Length
7-722 ft. (2-220 m)
7-902 ft. (2-275 m)
7-1641 ft. (2-500 m)
7-1805 ft. (2-550 m)