IP Routing Protocols

THE OSI AND INTERNET PROTOCOL STACKS

Figure A-11 and Table A-2 compare the OSI Model protocol stacks and the Internet protocol stacks. The Internet designers did not intend the Internet architecture to be a model. Rather, the protocols were designed and written to solve specific problems. On the other hand, OSI has developed to serve as a model for the development of communications systems. In addition, several of the layers contain protocols as well.

Figure A-11. The OSI and Internet Layers

Table A-2(a). Comparision of the Upper Layers

OSI Term	Spelled-out	Int Term	Spelled-out
FTAM	File transfer and access management	FTP	File transfer protocol
VT	Virtual ...