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A version of SLIP with header compression is called Compressed SLIP (CSLIP). [4] The compression algorithm used in CSLIP is known as Van Jacobson TCP/IP Header Compression . [ 5 ] CSLIP has no effect on the data payload of a packet and is independent of any compression by the serial line modem used for transmission.
Van Jacobson compression reduces the normal 40 byte TCP/IP packet headers down to 3–4 bytes for the average case; it does this by saving the state of TCP connections at both ends of a link, and only sending the differences in the header fields that change.
Once a stream of packets is classified, it is compressed according to the compression profile that fits best. A compression profile defines the way to compress the different fields in the network headers. Several compression profiles are available, including the following: Uncompressed; IP-only; UDP/IP; UDP-Lite/IP; ESP/IP; RTP/UDP/IP; RTP/UDP ...
The internet layer software encapsulates each TCP segment into an IP packet by adding a header that includes (among other data) the destination IP address. When the client program on the destination computer receives them, the TCP software in the transport layer re-assembles the segments and ensures they are correctly ordered and error-free as ...
Session-layer functionality is also realized with the port numbering of the TCP and UDP protocols, which are included in the transport layer of the TCP/IP suite. Functions of the presentation layer are realized in the TCP/IP applications with the MIME standard in data exchange.
The DNS (Domain Name System), an SNMP (Simple Network Management Protocol) agent, in v1, v2 or v3, with private MIB (management information base) support and MIB compiler. Operating systems that implement the lwIP TCP/IP stack may provide a range of supporting clients and servers at the application layer.
This layer, presentation Layer and application layer are combined in TCP/IP model. 9P Distributed file system protocol developed originally as part of Plan 9; ADSP AppleTalk Data Stream Protocol; ASP AppleTalk Session Protocol; H.245 Call Control Protocol for Multimedia Communications; iSNS Internet Storage Name Service
He is also known for the TCP/IP Header Compression protocol described in RFC 1144: Compressing TCP/IP Headers for Low-Speed Serial Links, [8] popularly known as Van Jacobson TCP/IP Header Compression. He is the co-author of several widely used network diagnostic tools, including traceroute, tcpdump, and pathchar.