Allied Telesis AT-8324SX - Manual (Page 34)

Network Planning
34
Connectivity Rules
When adding hubs (repeaters) to your network, please follow the
connectivity rules listed below 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
Maximum Gigabit Fiber Optic Cable Distance
The AT-B15/SX has one 1000Base-SX fiber optic port with a SC
connector. This module operates at 1Gbps and supports auto-
negotiation for duplex mode (half- or full-duplex) and flow control. Refer
to Table 2 for the cabling specifications for this module.
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.
Table 2 Cabling Specifications for the AT-B15/SX Expansion Module
Cable 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)