SMC Networks 48-Port - Manual (Page 30)

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, 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
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.
Fiber Size Fiber Bandwidth Maximum Cable Length
62.5/125 micron 160 MHz/km 7-722 ft. (2-220 m)
200 MHz/km 7-902 ft. (2-275 m)
50/125 micron 400 MHz/km 7-1641 ft. (2-500 m)
500 MHz/km 7-1805 ft. (2-550 m)