Overview Of Tcp/Ip Protocol Usage - Novell NETWARE 6-DOCUMENTATION Manual

Overview of TCP/IP Protocol Usage

Protocol
Address Resolution Protocol
(ARP)
Transmission Control Protocol
(TCP)
User Datagram Protocol (UDP)
File Transfer Protocol (FTP)
TELNET
Routing Information Protocol
(RIP)
Open Shortest Path First
(OSPF)
Exterior Gateway Protocol
(EGP)
Applications developed for TCP/IP generally use several of the protocols in
the suite. The layers of the protocol suite is also known as the protocol stack.
User applications communicate with the top layer of the protocol suite. The
top-level protocol layer on the source computer passes information to the
lower layers of the stack, which in turn pass it to the physical network. The
physical network transfers the information to the destination computer. The
lower layers of the protocol stack on the destination computer pass the
information to higher layers, which in turn pass it to the destination
application.
Each protocol layer within the TCP/IP suite has various functions; these
functions are independent of the other layers. Each layer, however, expects to
receive specific services from the layer beneath it, and each layer provides
specific services to the layer above it.
Figure 2 on page 14
level on the source and destination computers are peers. For example, the
application on the source computer and the application on the destination
Service
Maps IP addresses to physical addresses.
Provides reliable data-stream delivery service
between end nodes.
Provides unreliable datagram delivery service
between end nodes.
Provides application-level services for file
transfer.
Provides terminal emulation.
Enables the exchange of distance vector
routing information between routers.
Enables the exchange of link state routing
information between routers.
Enables the exchange of routing information
between exterior routers.
shows the TCP/IP protocol layers. The layers at the same
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Understanding