SNMP Explained | Simple Network Management Protocol | Cisco CCNA 200-301

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SNMP stands for Simple Network Management Protocol.
SNMP is a standardized protocol used to collect and organise device information on a network. It does this over UDP port 161 (Traps are received on port 162).
There are three versions of SNMP.
- SNMPv1 which is the original version of SNMP
- SNMPv2c - This is the revised version which introduced some enhancements. Most notably the use of community strings for security. You can think of a community string like a password.
- SNMPv3 - Which is another improvement adding authentication and encryption. This version is much more secure than the previous versions.
A device that is SNMP enabled is known as an agent. An SNMP agent has several objects that can be interacted with. Some objects are part of the industry standard, and some will be vendor-specific for this device.
For example, this router will have objects for, name, uptime, interfaces, and the routing table to name just a few.
Each object is assigned an object identifier or OID. The OID is a sequence of numbers, which at first glance can look like an IP address. This is used to identify the object in a file called a MIB which stands for Management Information Base.
To interact with these object, we need something called a network management system or NMS. The NMS is a piece of software that can communicate with the SNMP agent.
There are a few ways the NMS can speak to the agent. The first way is by using GET requests. Get message include get, getNext and getBulk. They are used to actively request information from the agent.
The second way we can talk to an agent is by using SET requests. A set request is used to change a value on the agent.
The last method I want to talk about is Traps and Informs. Agents use traps and informs to actively communicate with the NMS. The agent can send a trap or inform to the NMS when an event occurs on the device.
Traps and informs are two different types of massage but they both do the same thing. The difference is that informs are reliable. An inform message will wait for an acknowledgement from the NMS. If it doesn’t receive one, it will resend the inform. A trap on the other hand is sent and then forgotten. Even though informs are consider reliable, both still use UDP.
#ccna #cisco #networking

[@jeffreytackett3922]

When I hear someone say "rooter", instead of "rauhter", my brain itches.

[@Loodough]

This channel must be on top of every other channels out there. Best content, smooth transition in a highly sensible way! Good job 🙌

[@Certbros]

Wow, thanks Layth! Appreciate the comment!

[@srinis9801]

The videos from cetbros are really tremendous. The most of the topics the way you explained was awesome. The people will love and start learning who doesn't have idea or interest in Networking !!! . We are really awaiting for more tech videos !!! Appreciate your great works

[@Hsan2k23]

although i passed couple weeks studying SNMP because i needed it in my intership, i won't miss the explanation of certBros , it always come with a great benifit and its always an entertaining

[@Certbros]

Thanks for the comment Hsan! Great to hear you're enjoying the videos and congrats on passing!

[@generalchannel5926]

I think I have done atleast 1% good stuff in my previous life so I got a chance to watch your video in this life thanks mate ❤️

[@ahembalan991]

I look out for content from certbros anytime I want to understand the basics of a concept in a very simple and friendly way language.

[@Certbros]

Thank you Ahemba! Great to hear you're enjoying the videos.

[@MrEspek]

14 minutes which I didn't know when passed. AWESOME tutorial! Thanks!

[@arelivalentin9587]

this is all making sense now! thank you professor

[@mr_whyy]

Comments on Certbro's video are just wholesome, all of them. Quickly tells you how good this channel is, no need of the dislike count.

[@maknetworks7229]

wow all of this made sense after I read about snmp in the book called data communications by forouzan a wonderful and easy to understand book and top of that watched this video and saw practical demonstration , just a cherry on top , bravo certbros

[@zimbabwesteve4620]

These videos are fantastic and I love using them to learn myself and explain concepts

[@Mrs.Nizbits]

Just got my first IT job as a Jr MSP admin, and this video has helped me get a better understanding what SNMP does and how it work. Love your videos

[@slee2054]

congrats!!!!!! I'm also trying to get into the IT field. if you could share what certificate you earned that helped you get the job, I'd really appreciate it. I have no experience and only have CompTIA Network +

[@mrgigs08]

Love you guys you are really the best! Explanation is just wonderful which I couldn't say the same about David Bombal. Keep on doing an amazing job! I am very much grateful for your help!

[@x7331x]

Great explanation of how the SNMP works, and great visuals: simple and effective!

[@WaleBusari]

I watch this video on March 11th 2021 and i will give you award of excellence as the best SNMP tutor of the century -Good job and have a great day always

[@Certbros]

Haha thank you! Great to hear this video helped you out.

[@juliantambwe8551]

Solid video, clear and right on point. Just awesome! Thanks!

[@justinbridgman9503]

Smooth, useful and ecconomical video, really enjoyed it, helpful.

[@tanbir91]

Loved the pictorial representation. Smooth explanation !

[@Certbros]

Thank you Tanbir! Really appreciate it 👍

[@masakomaggie4071]

Thanks for the video. I more clearly understand how MIB and SNMP works.

[@melulekinkomazana7843]

I like your videos they always clear out things for me. Explanation is top notch. Thanks a lot.

[@alonkadosh]

What a great video. Thank you!

[@ramondpaysour4831]

Thank you this was a big help for me.

[@lujainbanbouk8493]

the best video about SNMP. thank you!

[@Certbros]

Thank you Lujain! Glad you think so 🙏

[@Pa168777]

Great training! Awesome Job!

[@riatimohamed1253]

Great demo for SNMP protocol, thanks for your sharing.

[@fernandomercado3983]

Thank you very well explained. Thanks for showing the practical information on how it is used. Greetings from Argentina!

[@harveydai4926]

Thank you so much for sharing this knowledge so well

[@CapsLock33]

thank you for this video! i learned a lot..

[@phephedwiputra3785]

Thanks for this informative lesson, really looking forward to see another video from certbros

[@Certbros]

Thank you for the comment! Really great to hear you liked the video.

[@satyavir8]

Outstanding explanation, love ❤️ it

[@techtechlearn3438]

awesome video !!!!!!!!!!!!!!!!!! no exageration!!

[@Charlesbabbage2209]

Thank you for this information!

[@aruizsilva]

Very well done. Congrats. You are a great help

[@Certbros]

Thanks Antonio! Glad the videos are helping.

[@samithgurusinghe2246]

Very useful video. Thank you!

[@brito809]

best network channel in all KZbin!

[@ahmedareem9599]

What a great explanation!!!!!!

[@runrunsomethings5229]

Awesome and thanks for the wonderful explanation

[@maknetworks7229]

excellent demonstration

[@tg9460]

Awesome tutorial. Thank you very much.

[@Certbros]

Thanks T G. Glad you liked it!

[@raj-qm1gy]

fantastic , great work.

[@snehathombre7640]

Wonderful. Thank you

[@dhanaballakshmanan6708]

Wonderful...which i was looking since a long time....I am CCNA instructor...should be very helpful for my students.... & will share it with them

[@Certbros]

Great to hear you liked the video. Good luck to all of your students!

[@boldschool6308]

Amazing dude. What a great explanation

[@Certbros]

Thanks Datta! I really appreciate it 👌

[@christopherwhaley906]

Great video!! Thanks!

[@Certbros]

You're welcome!

[@benmalekabdou2952]

thank you so much for the amazing explaining

[@Certbros]

You're welcome!

[@nishisinha8806]

Very informative video. Simple and clear

[@Certbros]

Thank you Nishi. Glad you liked it 👍

[@user-bb1db1cv3r]

I am not really comments guy but this video was perfect, thank you wish you best 🤞 🤞

[@Certbros]

Thank you for the kind words! Really appreciate the support!

[@shijus728]

amazing videos , can you make more detailed videos related to snmp would have been helpful for everyone , new to this field

[@alexanderrudakov59]

Great video!

[@Certbros]

Thanks Alexander! Glad you enjoyed it.

[@ammarkasbaoui1632]

thank for the help

[@Hoowahoowa]

awesome vid!

[@Certbros]

Thanks! Glad you enjoyed it!

[@hhashoww]

It's very useful!!! Thanks

[@Certbros]

Glad to hear it! Thanks! 👍

[@czar383]

I think I'm ready for the exam now.

[@patrickamara9309]

This is very good .

[@TheKulinos]

I am not expecting i could absorb easily your lecture because i am new in comp. network. but i was wrong! thank you so much....

[@Certbros]

Great to hear! You very welcome!

[@pengjuguo9282]

Really good！

[@Certbros]

Thanks! 👍

[@ibnuahmed4515]

Thanks a lot mate

[@Certbros]

You're welcome!

[@PaulEllisBIGDATA]

THANK YOU!!!!!!!!!!

[@Certbros]

You're welcome!

[@garolstipock]

Awesome.. SNMPv2c.

[@user-ic8li7st4u]

good

[@Xceso69]

Thank you.

[@Certbros]

You're welcome Carlos! Glad you liked the video.

[@victordangiaba328]

amaZing

[@lkdipeolu]

I love it.

[@Certbros]

Thank you!

[@bigdaddy910]

Hey, thanks for the awesome vid, but I have one question. Is the process similar when setting up Nagios as a monitoring system -> could I just use nagios instead of PTRG? Thanks

[@Certbros]

Thanks! Glad you liked it! Yes, I would imagine the process to be pretty much the same on Nagios.

[@danixunboxing]

Which software do you use to make the video? BTW Video is awesome...

[@robertrotundu6701]

Nice

[@j_r0dusmc168]

Can you PLEASE do a BGP video?!?

[@harshithraj5308]

just have a doubt.....where is all the commands are running( which software) is it powershell?

[@PetritK10]

Thank you, When we will be FULL CCNA course

[@Certbros]

The course will be ready as soon as possible. I'm thinking about doing a prelaunch so make sure you have registered your interest using the link in the description. 👍

[@puskalpulami8246]

Basically, SNMP protocol used for monitoring network.

[@rickallenbarnachea1003]

please explain more deeply about OSPF and BGP :)

[@it3963]

maybe also SPB 802.1aq

[@geofftefl]

I seem to be missing something - at 5:52 you switch to a command line screen, saying "here is my PC". What utility is that screen displaying and what is the target that you're sending those commands to?

[@vinushanponniah8368]

His PC is probably console connected to the router so he can have access to the CLI of the router. The pc also happens to be the NMS where it would manage the SNMP agent which is the router as well. I could be wrong but this is what I understood from it.

[@geofftefl]

@@vinushanponniah8368 if only I understood what you're talking about, I might think this information was very helpful. No offence.

[@ottowhassan6932]

why didn't you add the SNMP Server Command in the CLI?

[@hightower-es9qu]

Thanks. Now do a wireshark

[@nayanghosh7100]

Easily explained

[@newdadz]

Security Not My Problem. back then with snmp v1 and 2c.

[@stilianstoilov3728]

Waiting for NETCONF video :)

[@Certbros]

Thanks Stailian! I'll add this to my list of suggestions 👍

[@WeBBerTutoriais]

🙏 🙏

[@easycircle.inBlog]

❤

[@sajid108016]

Plz make video on Evpn

[@Certbros]

Thanks for the suggestion Sajid. I'll add it to my list.

[@mnasikadam7667]

كيفية تنزيله من المتصفح

[@nsa3679]

I just noticed, but when I skip back 10 seconds the audio gets echo-y, and when I do random stuff to make it normal again it gets like it was before wtf

[@Certbros]

👀

[@leothalion3983]

Can this be done in Packet Tracer

[@Certbros]

Yes definitely! A host computer or server will have a MIB browser on the Desktop tap.

[@leothalion3983]

@@Certbros , thank you!!

[@alittax]

1:44 Wait, Kevin Wallace said that V1 also had community strings: kzbin.info/www/bejne/qpiXaICQmdmWd6c So which video is correct?

[@Certbros]

You're absolutely right (and of course, Kevin is as well). Edited to avoid confusion. Thanks for the heads up 👍

[@nathansegurakennedy8607]

"🎶🎶🎶 Here come the MIB, Networking defenders 🎶🎶🎶"...get it? or am I too old lol (Here come the Men In Black, Men In Black Galaxy defenders)

[@Certbros]

🤣 if you're too old then so am I!

[@adiljeelani4618]

Could there not be a more simpler way to explain SNMP. ?

[@paulmichaelfreedman8334]

SNMP, S stands for Simple. Yet, especially with v3, it's anything but simple LOL

[@redeha001]

god bless you or karma whatever you pick

[@Certbros]

Thank you!

[@pauljamieson803]

The only thing missing is commentary ..

[@ravn4836]

superb