100BASE-X

E98892

100BASE-X is a family of Fast Ethernet standards that define 100 Mbit/s transmission over fiber optic or twisted-pair cabling using 4B/5B line coding.


Statements (44)
Predicate Object
instanceOf Ethernet physical layer family
Fast Ethernet standard
IEEE 802.3 physical layer specification
backwardCompatibleWith 10BASE-T at MAC layer
bitRate 100,000,000 bit/s
category Ethernet physical layer
computer network standard
clockRateOnMedium 125 MBd for 4B/5B-coded variants
dataRate 100 Mbit/s
defines 100 Mbit/s signaling over physical media
electrical signaling characteristics for copper variants
optical wavelength and power levels for fiber variants
designedFor local area networks
frameFormatCompatibility IEEE 802.3 Ethernet frame
includesVariant 100BASE-BX
100BASE-FX
100BASE-LX10
100BASE-SX
100BASE-TX
introducedAs Fast Ethernet physical layer family
maximumSegmentLengthDependsOn medium type
mediaAccessControlCompatibleWith IEEE 802.3 MAC
operatesAtLayer OSI layer 1
partOf Fast Ethernet
partOfStandard IEEE 802.3u
relatedTo 1000BASE-X
10BASE-X
standardizedBy IEEE
supersededInManyDeploymentsBy 1000BASE-X
supportsAutoNegotiation yes, via IEEE 802.3u autonegotiation
supportsDuplexMode full-duplex
half-duplex
supportsMedium fiber optic cable
twisted-pair copper cable
supportsTopology star topology via hubs or switches
uses NRZI signaling with 4B/5B on some variants
separate transmit and receive pairs
usesConnector LC connector for some 100BASE fiber variants
RJ45 for 100BASE-TX
SC connector for many 100BASE-FX deployments
usesEncoding 4B/5B block coding
usesLineCoding 4B/5B
usesLinkIntegrityMechanism link pulses or ordered sets depending on variant
usesScrambling no scrambling in base specification

Referenced by (1)
Subject (surface form when different) Predicate
100BASE-FX
belongsToSeries

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