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PA-2FE-TX and PA-2FE-FX Two-Port Fast Ethernet Port Adapter Installation and Configuration
OL-3474-07
Chapter 1 Overview
IEEE 802.3u 100BASE-T Specifications
Figure 1-3 Maximum Segment and Network Lengths—100BASE--FX and 100BASE-TX
Maximum network length
(half-duplex, one repeater)
4
200 m 272 m
Data rate 100 Mbps 100 Mbps
Signaling method 4B/5B
5
block coded, scrambled,
with MLT-3 line coding
4B/5B block coded, with NRZI
line coding
Connector RJ-45 (ISO/IEC 60603-7:-1990 SC-type: dual simplex or single
duplex for RX and TX
Topology Star/hub Star/hub
1. EIA/TIA-568 or EIA-TIA-568 TSB-36 compliant.
2. Cisco does not supply Category 5 UTP RJ-45 cables. However, they are available commercially.
3. Data Terminal Equipment (DTE to DTE), see Figure 1-3.
4. DTE to Repeater to DTE, see Figure 1-3.
5. 4B/5B encoding or block coding, encodes four data bits into a 5-bit transmission sequence.
Table 1-1 Cabling Specifications (continued)
Parameter 100BASE-TX 100BASE-FX (Multimode)
Maximum segment length, full duplex
100 m TX
DTEDTE*
*DTE = Data Terminal Equipment
**Because repeaters have more delay, total network length is shorter.
2000 m FX–multimode
Maximum segment length, half duplex
100 m TX
DTEDTE
412 m FX
Maximum segment length, full duplex
10,000 m FX–single mode
DTEDTE
Maximum network length, half duplex
200 m TX
DTEDTE R
(Repeater)
272 m FX**
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