Term
| adjacent-layer interaction |
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Definition
| On a single computer, one layer provides a service to a higher layer. The software or hardware that implements the higher layer requests that the next lower layer perform the needed function. |
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Term
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Definition
| On a computer that receives data over a network, the process in which the device interprets the lower-layer headers and, when finished with each leader, removes the header, revealing the next-higher-layer PDU. |
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Term
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Definition
| The process of putting headers (and sometimes trailers) around some data. |
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Term
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Definition
| A term referring to a data link header and trailer, plus the data encapsulated between the header and trailer. |
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Term
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Definition
| Comprehensive set of documents which define the protocols and physical requirements necessary for a network to function. ex. TCP/IP and OSI |
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Term
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Definition
| A logical grouping of bytes that includes the network layer header and encapsulated data, but specifically does not include any headers and trailers below the network layer. |
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Term
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Definition
| Protocol Data Unit - An OSI term to refer generically to a grouping of information specifically, an LxPDU would imply the data and headers as defined by Layer x. |
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Term
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Definition
| The 2 computers use a protocol to communicate with the same layer on another computer. The protocol defined by each layer uses a header that is transmitted between the computers to communicate what each computer wants to do. Header information added by a layer of the sending computer is processed by the same layer of the receiving computer. |
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Term
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Definition
| In TCP, a term used to describe a TCP header and its encapsulated data (also called an L4PDU). Also in TCP, the process of accepting a large chunk of data from the application layer and breaking it into smaller pieces that fit into TCP segments. In Ethernet, a segment is either a single Ethernet cable or a single collision domain (no matter how many cables are used). |
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