During its development history, the communities of researchers, developers, implementers and users of the DARPA/DoD TCP/IP protocol suite have experimented with a wide range of protocols in a variety of different networking environments. The Internet has grown, especially in the last few years, as a result of the widespread availability of software and hardware supporting this system. The scaling of the size and scope of the Internet and increased use of its technology in commercial applications has underscored for researchers, developers and vendors the need for a common network management framework within which TCP/IP products can be made to work.
In recognition of this need, several efforts were started to develop network management concepts which might be applied to the Internet and to the internet technology in general. Three of these efforts had made sufficient progress by the end of 1987 that it became clear that some choices had to be made or the community would find itself with a set of incompatible network management tools. These efforts included the High-Level Entity Management System (HEMS), the Simple Gateway Monitoring Protocol (SGMP) and the Common Management Information Service/Protocol.
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