Giga bit Ethernet

Posted by AJ × 08:01

• 1000Base-SX (short wavelength fiber)

– Short wavelength (770-860 nm)

– support duplex links of

• 220- 275 m using 62.5 mm multimode fiber

• 500- 550 m using 50 mm multimode fiber

• 1000Base-LX (long wavelength fiber)

– Long wavelength (1270-1355 nm)

– support duplex links of

• 550 m using 62.5 mm or 50 mm multimode fiber

• 5000 m using 9 mm single-mode fiber

• 1000Base-CX (short haul copper)

– supports 1-Gbps links within a single room or equipment rack

– uses copper jumpers , special shielded twisted pair that spans no more

than 25 m

• 1000Base-T

– uses 4 pairs of cat 5 UTP

– support devices over a range of 100m

• Encoding scheme for Gigabit Ethernet is 8B/10B

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