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| OSI-Modell | Einordnung | TCP/IP-/DoD-Modell | Hybridmodell | Verbindung | Protokolle | Adressierung | PDU | Geräte | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7 | Anwendungen (Application) |
Anwendungs- orientiert |
Application | Anwendungen (Application) |
Ende zu Ende (Multihop) |
HTTP FTP HTTPS SMTP LDAP NCP |
Port | (DNS?) | Daten | Gateway, Content-Switch, Layer-4-7-Switch | Gate-way, PC | |
| 6 | Darstellung (Presentation) | |||||||||||
| 5 | Sitzung (Session) | |||||||||||
| 4 | Transport (Transport) |
Transport- orientiert |
Transport / Host-to-Host | Transport (Transport) |
TCP UDP SCTP SPX |
TCP = Segmente UDP = Datagramme | ||||||
| 3 | Vermittlung (Network) |
Internet | Vermittlung (Network) |
Punkt zu Punkt |
ICMP IGMP IP IPsec IPX |
IP-Adresse | Pakete | Router, Layer-3-Switch | ||||
| 2 | Sicherung (Data Link) |
Host-to-network / Network Access |
Sicherung (Data Link) |
Ethernet Token Ring FDDI ARCNET |
MAC-Adresse | Rahmen (Frames) | Bridge, Switch | NIC, Modem | ||||
| 1 | Bitübertragung (Physical) |
Bitübertragung (Physical) |
Bits | Repeater, Hub | ||||||||