1000BASELX10 is a Gigabit over fiber Fast Ethernet standard

1000BASE-LX10 is a Gigabit over fiber “Fast Ethernet” standard and can work over distances of up to 10 km.  

a) How long will a bit take to travel end-to-end on a maximum-length network?

b) What will be the size of the contention time slot at the maximum distance?

Solution

A Gigabit Ethernet network using the 1000BASE-LX long wavelength option supports duplex links of up to 550 meters of 62.5 millimeters or 50 millimeters multimode fiber. 1000BASE-LX can also support up to 5 Kilometers of 10 millimeter single-mode fiber. Its wavelengths range from 1270 millimeters to 1355 millimeters. The 1000BASE-SX is a short wavelength option that supports duplex links of up to 275 meters using 62.5 millimeters at multimode or up to 550 meters using 55 millimeters of multimode fiber. Typical wavelengths for this option are in the range of 770 to 860 nanometers.

Operating ranges