Computernetzwerke
( www.reemers.de ) Druck und Verarbeitung: GraphyCems, Villatuerta
Printed in Spain
Inhaltsverzeichnis
Kapitel 1
Grundlagen für Computernetzwerke 11
1.1 Geschichte der Netzwerktechnik........................................................14
1.2 Netzwerkdefinition..............................................................................20
1.3 Das OSI-Schichtenmodell......................................................................22
1.4 Klassische Netzwerktopologien............................................................25
1.4.1 Sterntopologie............................................................................26
1.4.2 Ringtopologie und FDDI............................................................27
1.4.3 Die Bustopologie........................................................................27
1.4.4 Die Baumtopologie....................................................................29
1.5 Vom LAN zum WAN..............................................................................30
1.6 Demilitarized Zone - DMZ....................................................................32
1.7 Virtual Local Area Network - VLAN....................................................33
1.8 Standards und Normen........................................................................34
1.8.1 Organisationen..........................................................................35
1.8.2 IEEE-Standards ..........................................................................38
1.8.3 Dokumentation - Request For Comments................................39
Kapitel 2
Das Ethernet 41
2.1 Der Ursprung mit CSMA/CD..................................................................41
2.2 Standard-Ethernet................................................................................43
2.2.1 Shared Medium..........................................................................44
2.2.2 Round Trip Delay und Slot Time................................................44
2.3 10Base5..................................................................................................45
Attachment Unit Interface........................................................46
2.4 10Base2..................................................................................................48
2.5 10BaseT..................................................................................................52
2.5.1 TP-Kabelverbindung für zwei PCs............................................55
2.6 10BaseFX................................................................................................56
2.7 Fast-Ethernet........................................................................................60
2.7.1 100BaseTX..................................................................................62
2.7.2 100BaseFX..................................................................................65
2.8 Gigabit-Ethernet....................................................................................72
2.8.1 1000BaseLX und 1000BaseSX....................................................74
2.8.2 1000BaseCX................................................................................76
2.8.3 1000BaseT....................................................................................78
2.9 Kodierungsverfahren............................................................................81
2.9.1 Manchester-Kodierung..............................................................81
2.9.2 4B/5B-Kodierung........................................................................82
2.9.3 8B/10-Kodierung........................................................................84
2.9.4 MLT-3-Kodierung........................................................................87
2.9.5 PAM5- und Trellis-Kodierung....................................................88
2.10 Ethernet-Schichten und Frame-Formate ............................................89
2.10.1 Rahmentypen..............................................................................92
2.11 10 Gigabit-Ethernet..............................................................................96
2.11.1 Realisierungen mit
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