TCP/IP Model

Share This Post

This model has the same purpose as the OSI model but fits better into modern network troubleshooting. Comparing to the OSI model, TCP/IP is a 4-layer model:

  • Application layer (4) – includes application, presentation and session layers of the OSI model, which significantly simplifies network troubleshooting;
  • Transport layer (3) – same as a transport layer in the OSI model (TCP, UDP protocols);
  • Internet layer (2) – does the same as Network layer in the OSI model (include ARP, IP protocols);
  • Link layer (1) – also called the Network Access layer. Includes both Layer1 and 2 of the OSI model, therefore its primary concern is physical data exchange between network nodes;
TCP/IPOSI ModelProtocols
TCP/IPOSI ModelProtocols
Application LayerApplication LayerDNS, DHCP,HTTP,SSH etc.
Application LayerJPEG,MPEG,PICT etc.
Session LayerPAP, SCP, ZIP etc.
Transport LayerTransport LayerTCP, UDP
Internet LayerNetwork LayerICMP, IGMP, IPv4, IPv6, IPSec
Link LayerData Link LayerARP, CDP, MPLS, PPP etc.
Physical LayerBluetooth, Ethernet, Wi-Fi etc.

Subscribe To Our Newsletter

Get updates and learn from the best

More To Explore

MikroTik

This post gives you details of MikroTik and their uses, as well as the best MikroTik Router price in Nepal. MikroTik is a Latvian company

Policy Routing

Overview Policy routing is the method to steer traffic matching certain criteria to a certain gateway. This can be used to force some customers or

Do You Want To Make Your Dream Network Come True?

drop us a line and keep in touch

X