Please Whitelist This Site?

I know everyone hates ads. But please understand that I am providing premium content for free that takes hundreds of hours of time to research and write. I don't want to go to a pay-only model like some sites, but when more and more people block ads, I end up working for free. And I have a family to support, just like you. :)

If you like The TCP/IP Guide, please consider the download version. It's priced very economically and you can read all of it in a convenient format without ads.

If you want to use this site for free, I'd be grateful if you could add the site to the whitelist for Adblock. To do so, just open the Adblock menu and select "Disable on tcpipguide.com". Or go to the Tools menu and select "Adblock Plus Preferences...". Then click "Add Filter..." at the bottom, and add this string: "@@||tcpipguide.com^$document". Then just click OK.

Thanks for your understanding!

Sincerely, Charles Kozierok
Author and Publisher, The TCP/IP Guide


NOTE: Using software to mass-download the site degrades the server and is prohibited.
If you want to read The TCP/IP Guide offline, please consider licensing it. Thank you.

The Book is Here... and Now On Sale!

The whole site in one document for easy reference!
The TCP/IP Guide

Custom Search







Table Of Contents  The TCP/IP Guide
 9  TCP/IP Application Layer Protocols, Services and Applications (OSI Layers 5, 6 and 7)
      9  TCP/IP Network Configuration and Management Protocols (BOOTP, DHCP, SNMP and RMON)
           9  TCP/IP Network Management Framework and Protocols (SNMP and RMON)
                9  TCP/IP Internet Standard Management Framework Overview, Architecture, Components and Concepts

Previous Topic/Section
Overview and History of the TCP/IP Internet Standard Management Framework and Simple Network Management Protocol (SNMP)
Previous Page
Pages in Current Topic/Section
1
2
3
Next Page
TCP/IP Internet Standard Management Framework Architecture and Protocol Components
Next Topic/Section

TCP/IP SNMP Operational Model, Components and Terminology.
(Page 2 of 3)

SNMP Entities

Each device that participates in network management using SNMP runs a piece of software, generically called an SNMP entity. The SNMP entity is responsible for implementing all of the various functions of the SNMP protocol. Each entity consists of two primary software components. Which components comprise the SNMP entity on a device depends of course on whether the device is a managed node or a network management station.

Managed Node Entities

An SNMP managed node can be pretty much any network device that can communicate using TCP/IP, as long as it is programmed with the proper SNMP entity software. SNMP is designed to allow regular hosts to be managed, as well as intelligent network interconnection devices such as routers, bridges, hubs and switches. Other “unconventional” devices can likewise be managed, as long as they connect to a TCP/IP internetwork: printers, scanners, consumer electronic devices, even specialty medical devices and more.

The SNMP entity on a managed node consists of the following software elements and constructs:

  • SNMP Agent: A software program that implements the SNMP protocol and allows a managed node to provide information to an NMS and accept instructions from it.

  • SNMP Management Information Base (MIB): Defines the types of information stored about the node that can be collected and used to control the managed node. Information exchanged using SNMP takes the form of objects from the MIB.
Network Management Station Entities

On a larger network, a network management station may be a separate, high-powered TCP/IP computer dedicated to network management. However, it is really software that makes a device into an NMS, so the NMS may not be a separate hardware device. It may act as an NMS and also perform other functions on the network.

The SNMP entity on a network management station consists of:

  • SNMP Manager: A software program that implements the SNMP protocol, allowing the NMS to collect information from managed nodes and to send instructions to them.

  • SNMP Applications: One or more software applications that allow a human network administrator to use SNMP to manage a network.

Previous Topic/Section
Overview and History of the TCP/IP Internet Standard Management Framework and Simple Network Management Protocol (SNMP)
Previous Page
Pages in Current Topic/Section
1
2
3
Next Page
TCP/IP Internet Standard Management Framework Architecture and Protocol Components
Next Topic/Section

If you find The TCP/IP Guide useful, please consider making a small Paypal donation to help the site, using one of the buttons below. You can also donate a custom amount using the far right button (not less than $1 please, or PayPal gets most/all of your money!) In lieu of a larger donation, you may wish to consider purchasing a download license of The TCP/IP Guide. Thanks for your support!
Donate $2
Donate $5
Donate $10
Donate $20
Donate $30
Donate: $



Home - Table Of Contents - Contact Us

The TCP/IP Guide (http://www.TCPIPGuide.com)
Version 3.0 - Version Date: September 20, 2005

Copyright 2001-2005 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.