Cisco Systems PA-FE-TX IEEE 802.3u 100BaseT Specifications, IEEE 802.3u 100BaseT Specifications

IEEE 802.3u 100BaseT Specifications

IEEE 802.3u 100BaseT Specifications

Table 1-3 lists the cabling specifications for 100-Mbps Fast Ethernet transmission over UTP, FTP, and fiber-optic cables. Table 1-4 summarizes IEEE 802.3u 100BaseT physical characteristics.

Table 1-3	Specifications and Connection Limits for 100-Mbps Transmission
Parameter		RJ-45			MII	SC-Type
Cable specification		Category 5 1 UTP2, 22 to 24 AWG			Category 3, 4, or 5, 150-ohm UTP or FTP,	62.5/125 multimode optical
					or multimode optical fiber	fiber
Maximum cable length		–			3	–
					1.64 ft (0.5 m) (MII-to-MII cable)
Maximum segment length		328 ft (100 m) for 100BaseTX			3.28 ft (1 m)4 or 1,312 ft (400 m) for	328 ft (100 m)
					100BaseFX
Maximum network length		656 ft (200 m)	4	(with 1 repeater)	–	4
						656 ft (200 m) (with 1

repeater)

1EIA/TIA-568 or EIA-TIA-568 TSB-36 compliant.

2Cisco Systems does not supply Category 5 UTP RJ-45 or 150-ohm FTP MII cables. Both are available commercially.

3This is the cable between the MII port on the PA-FE port adapter and the appropriate transceiver.

4This length is specifically between any two stations on a repeated segment.

Table 1-4	IEEE 802.3u Physical Characteristics
Parameter	100BaseFX	100BaseTX
Data rate (Mbps)	100	100
Signaling method	Baseband	Baseband
Maximum segment length (meters) 100 m between repeaters		100 m between DTE1 and repeaters
Media	SC-type: dual simplex or single duplex for Rx and Tx	RJ-45MII
Topology	Star or Hub	Star or Hub

1 DTE = data terminal equipment.

1-10PA-FE-TX and PA-FE-FX Fast Ethernet 100BaseT Port Adapter Installation and Configuration