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How does SNMP work?

Can you tell me how does SNMP (Simple Network Management Protocol) work?

The simple network management protocol (SNMP) use for monitoring of network-attached devices for any conditions that warrant administrative attention. For example all of the following devices can use SNMP for managing devices on IP networks:

  1. Network router
  2. Network switch
  3. Printer
  4. NAS server
  5. ADSL ISP router / modem
  6. Linux / UNIX / Windows servers
  7. Workstation and more.

Administrator can find or manage network performance, solve problem or even optimize it further. SNMP works at the Application Layer of the Internet Protocol Suite (Layer 7 of the OSI model).

You can find out many resources on the Internet that explain SNMP. Take a look at following articles:

Network Management & Monitoring with Linux : Some handy tools for managing today's ubiquitous networks

Simple Network Management Protocol document from CISCO

SNMP FAQs

SNMP Wikipedia page

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{ 7 comments… add one }

  • Ron December 16, 2009, 6:11 am

    WOW are there some errors in this publication!! First of all the big whammy is the Application Layer is Layer 7 not 5!! That should be enough to maybe think about publishing an article on networking and have the most basic bit of information wrong!
    Second read SLOWLY and you will see all the grammatical errors also! Too much for me to grade a paper here but use spell check and grammar check there free and built in with MS Word. Oh yeah get a book on networking!!
    “The simple network management protocol (SNMP) use for monitoring of network-attached devices for any conditions that warrant administrative attention. It is use to manage IP network devices such as servers, routers, switches etc. Administrator can find or manage network performance, solve problem or even optimize it further. It works at TCP/IP Application layer 5 (L5).”

    You can find out many resources on the net that explain SNMP. Take a look at following articles:

  • erik March 23, 2011, 7:33 pm

    i hate snmp

    • Acc March 30, 2012, 12:13 pm

      Even I hate snmp :(

  • Matt June 8, 2011, 7:35 am

    It works at TCP/IP layer 5 you say? You mean layer 7 of the OSI model. The TCP/IP model incorporates Session/presentation and application layers into layer 4 of 4.

    I mean really.

  • Kumar December 22, 2011, 7:10 am

    I have installed SNMP on linux server . but bz of this my httpd load increased,, how to deal this situation.

  • Paulio March 27, 2012, 3:02 pm

    Err… So how does it work?

  • shgn December 26, 2013, 5:44 am

    Thank you for the artical.
    some links are broken.

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