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TCP/IP Network Management Framework and Protocols (SNMP and RMON)
Modern networks and internetworks
are larger, faster and more capable than their predecessors of years
gone by. As we expand, speed up and enhance our networks, they become
more complex, and as a result, more difficult to manage. Where years
ago an administrator could get by with very simple tools to keep a network
running, today this is simply insufficient. More sophisticated network
management technologies are required to match the sophistication of
Some of the most important tools
in the network manager's toolbox are now in fact software,
not hardware. To manage a sprawling, heterogeneous and complex internetwork,
software applications have been developed that allow information to
be gathered and devices controlled using the internetwork itself. TCP/IP,
being the most popular internetworking suite, of course has such software
tools. One of the most important is a pair of protocols that have been
implemented as part of an overall method of network management called
the TCP/IP Internet Standard Management Framework.
In this section I describe in detail
the TCP/IP Internet Standard Management Framework, looking at each of
its architectural and protocol components and how they interoperate.
The first subsection provides an overview of the network management
framework itself and serves as an introduction to the sections that
follow. The second subsection discusses the way that network management
information is structured and arranged into information stores called
Management Information Bases (MIBs). The third subsection describes
the operation of the key protocol in TCP/IP network management, the
Simple Network Management Protocol (SNMP). Finally, I round out the
section with a brief look at Remote Network Monitoring (RMON), an enhancement
of SNMPsometimes called a protocol, even though it really isn'tthat
provides administrators with greater management and monitoring abilities
on a TCP/IP internetwork.
Note: While you may be tempted to jump straight to the subsection on SNMP, what is written there will make a lot more sense if you read the subsections here in order.
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The TCP/IP Guide (http://www.TCPIPGuide.com)
Version 3.0 - Version Date: September 20, 2005
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