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Temat artykułu: Data Encapsulation and Tunneling
Tekst napisał pitt2k dnia 08-01-2004
Data encapsulation is the process in which the information in a protocol is wrapped, or contained, in the data section of another protocol. In the OSI model each layer encapsulates the layer immediately above it as the data flows down the protocol stack. The encapsulation process can be broken down into 5 steps.
At a transmitting device, the data encapsulation method is as follows:
REMEMBER THIS !!!
Encapsulation is the process of adding header information to data. Be very familiar with the above 5 steps of data encapsulation and the order in which they occur.
Tunneling
The process in which frames from one network system are placed inside the frames of another network system.
Opracowanie na podstawie materiałów TroyTech (www.troytech.com).
Temat artykułu: Data Encapsulation and Tunneling
Tekst napisał pitt2k dnia 08-01-2004
Data encapsulation is the process in which the information in a protocol is wrapped, or contained, in the data section of another protocol. In the OSI model each layer encapsulates the layer immediately above it as the data flows down the protocol stack. The encapsulation process can be broken down into 5 steps.
At a transmitting device, the data encapsulation method is as follows:
| Lp | Action | OSI Model | Keyword |
| 1 | Alphanumeric input of user is converted to data. | Application/Presentation/Session | DATA |
| 2 | Data is converted to segments. | Transport | SEGMENTS |
| 3 | Segments are converted to Packets or Datagrams and network header information is added. | Network | PACKETS |
| 4 | Packets or Datagrams are built into Frames. | Data Link | FRAMES |
| 5 | Frames are converted to 1s and 0s (bits) for transmission. | Physical | BITS |
REMEMBER THIS !!!
Encapsulation is the process of adding header information to data. Be very familiar with the above 5 steps of data encapsulation and the order in which they occur.
Tunneling
The process in which frames from one network system are placed inside the frames of another network system.
Opracowanie na podstawie materiałów TroyTech (www.troytech.com).