Chapter 6
| Port Connections
Fiber Cabling Guidelines
– 34 –
such as IP phones and wireless access points, which translates into greater network
availability.
Fiber Cabling Guidelines
The switch provides four slots for SFP-compliant fiber-optic transceivers.
Note that all 1000BASE fiber optic ports operate at 1 Gbps full duplex. The 100BASE
fiber optic ports operate at 100 Mbps full duplex.
Note:
The length of fiber optic cable for a single switched link should not exceed
the relevant standards specified in this section. However, power budget constraints
should also be considered when calculating the maximum fiber optic cable length
for a particular link.
Note:
Maximum distances may vary for different SFP vendors.
To ensure proper operation when installing the switch into a network, make sure
that the current fiber cables are suitable for 1000BASE or 100BASE operation. Check
the following criteria against the current installation of your network:
◆ Be sure to secure fiber cables properly and route them away from the switch.
Table 11: Maximum Gigabit Ethernet Fiber Cable Lengths
Cable Type Fiber Bandwidth Maximum Cable Length Connector
1000BASE-SX
62.5/125 micron multimode 160 MHz/km 2-220 m (7-722 ft) LC
200 MHz/km 2-275 m (7-902 ft) LC
50/125 micron multimode 400 MHz/km 2-500 m (7-1641 ft) LC
500 MHz/km 2-550 m (7-1805 ft) LC
1000BASE-LX
9/125 micron single-mode N/A 2 m - 10 km
(7 ft - 6.2 miles)
LC
1000BASE-LH
9/125 micron single-mode N/A 2 m - 80 km
(7 ft - 50 miles)
LC
Table 12: Maximum Fast Ethernet Fiber Cable Lengths
Type Cable Type Max. Cable Length Connector
100BASE-FX 50/125 or 62.5/125 micron multimode
9/125 micron single-mode
2 km
20 km
LC
LC
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