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
This channel must be on top of every other channels out there. Best content, smooth transition in a highly sensible way! Good job 🙌
Wow, thanks Layth! Appreciate the comment!
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
Thanks for the comment Hsan! Great to hear you're enjoying the videos and congrats on passing!
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
Haha thank you! Great to hear this video helped you out.
14 minutes which I didn't know when passed. AWESOME tutorial! Thanks!
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.
Thank you Ahemba! Great to hear you're enjoying the videos.
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.
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
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 +
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
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
I am not really comments guy but this video was perfect, thank you wish you best 🤞 🤞
Thank you for the kind words! Really appreciate the support!
thank you very much! now i understand the basics of SNMP much better.
awesome video !!!!!!!!!!!!!!!!!! no exageration!!
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
Great to hear you liked the video. Good luck to all of your students!
Great explanation of how the SNMP works, and great visuals: simple and effective!
Thank you very well explained. Thanks for showing the practical information on how it is used. Greetings from Argentina!
When I hear someone say "rooter", instead of "rauhter", my brain itches.
yup.. were just not used to it.. just different, nothing wrong with that 😋
Great demo for SNMP protocol, thanks for your sharing.
this is all making sense now! thank you professor
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!
the best video about SNMP. thank you!
Thank you Lujain! Glad you think so 🙏
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....
Great to hear! You very welcome!
best network channel in all TH-cam!
I like your videos they always clear out things for me. Explanation is top notch. Thanks a lot.
Loved the pictorial representation. Smooth explanation !
Thank you Tanbir! Really appreciate it 👍
Solid video, clear and right on point. Just awesome! Thanks!
Smooth, useful and ecconomical video, really enjoyed it, helpful.
Thanks for the video.
I more clearly understand how MIB and SNMP works.
Thank you so much for sharing this knowledge so well
Thanks for this informative lesson, really looking forward to see another video from certbros
Thank you for the comment! Really great to hear you liked the video.
Thank you this was a big help for me.
please explain more deeply about OSPF and BGP :)
maybe also SPB 802.1aq
excellent demonstration
thank you for this video! i learned a lot..
Very well done. Congrats. You are a great help
Thanks Antonio! Glad the videos are helping.
Very informative video. Simple and clear
Thank you Nishi. Glad you liked it 👍
Great training! Awesome Job!
What a great video. Thank you!
thank you so much for the amazing explaining
You're welcome!
Thank you for this information!
amazing videos , can you make more detailed videos related to snmp would have been helpful for everyone , new to this field
Outstanding explanation, love ❤️ it
Basically, SNMP protocol used for monitoring network.
I think I'm ready for the exam now.
Awesome and thanks for the wonderful explanation
Awesome tutorial. Thank you very much.
Thanks T G. Glad you liked it!
Amazing dude. What a great explanation
Thanks Datta! I really appreciate it 👌
Thanks. Now do a wireshark
just have a doubt.....where is all the commands are running( which software) is it powershell?
What a great explanation!!!!!!
Good video👍🏻
Thank you Vickey!
Wonderful. Thank you
fantastic , great work.
Awesome.. SNMPv2c.
Great video!! Thanks!
You're welcome!
This is very good .
Great video!
Thanks Alexander! Glad you enjoyed it.
great content
awesome vid!
Thanks! Glad you enjoyed it!
Thanks a lot mate
You're welcome!
thank for the help
It's very useful!!! Thanks
Glad to hear it! Thanks! 👍
Can you PLEASE do a BGP video?!?
THANK YOU!!!!!!!!!!
You're welcome!
Security Not My Problem. back then with snmp v1 and 2c.
Thank you.
You're welcome Carlos! Glad you liked the video.
Really good！
Thanks! 👍
Which software do you use to make the video? BTW Video is awesome...
Waiting for NETCONF video :)
Thanks Stailian! I'll add this to my list of suggestions 👍
Plz make video on Evpn
Thanks for the suggestion Sajid. I'll add it to my list.
why didn't you add the SNMP Server Command in the CLI?
good
Easily explained
I love it.
Thank you!
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
Thanks! Glad you liked it! Yes, I would imagine the process to be pretty much the same on Nagios.
amaZing
Thank you, When we will be FULL CCNA course
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. 👍
thank
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?
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.
@@vinushanponniah8368 if only I understood what you're talking about, I might think this information was very helpful. No offence.
Nice
Can this be done in Packet Tracer
Yes definitely! A host computer or server will have a MIB browser on the Desktop tap.
@@Certbros , thank you!!
The only thing missing is commentary ..
🙏 🙏
كيفية تنزيله من المتصفح
1:44 Wait, Kevin Wallace said that V1 also had community strings: th-cam.com/video/tg47MZdtcAE/w-d-xo.html So which video is correct?
You're absolutely right (and of course, Kevin is as well). Edited to avoid confusion. Thanks for the heads up 👍
❤
"🎶🎶🎶 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)
🤣 if you're too old then so am I!
Could there not be a more simpler way to explain SNMP. ?
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
👀
god bless you or karma whatever you pick
Thank you!
SNMP, S stands for Simple. Yet, especially with v3, it's anything but simple LOL
Rodriguez Cynthia Wilson Thomas Rodriguez Helen
superb
Very useful video. Thank you!