SNMP Explained | Simple Network Management Protocol | Cisco CCNA 200-301
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- Опубликовано: 16 ноя 2020
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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!
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
14 minutes which I didn't know when passed. AWESOME tutorial! Thanks!
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!
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 😋
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 ❤️
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 +
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.
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.
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.
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!
Great explanation of how the SNMP works, and great visuals: simple and effective!
Thanks for the video.
I more clearly understand how MIB and SNMP works.
Solid video, clear and right on point. Just awesome! Thanks!
Smooth, useful and ecconomical video, really enjoyed it, helpful.
Loved the pictorial representation. Smooth explanation !
Thank you Tanbir! Really appreciate it 👍
I like your videos they always clear out things for me. Explanation is top notch. Thanks a lot.
this is all making sense now! thank you professor
the best video about SNMP. thank you!
Thank you Lujain! Glad you think so 🙏
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
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.
What a great video. Thank you!
Great demo for SNMP protocol, thanks for your sharing.
Thank you very well explained. Thanks for showing the practical information on how it is used. Greetings from Argentina!
best network channel in all RUclips!
Very well done. Congrats. You are a great help
Thanks Antonio! Glad the videos are helping.
Great training! Awesome Job!
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!
Thank you so much for sharing this knowledge so well
What a great explanation!!!!!!
awesome video !!!!!!!!!!!!!!!!!! no exageration!!
Outstanding explanation, love ❤️ it
Very useful video. Thank you!
Thank you for this information!
Awesome and thanks for the wonderful explanation
Awesome tutorial. Thank you very much.
Thanks T G. Glad you liked it!
thank you for this video! i learned a lot..
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!
excellent demonstration
fantastic , great work.
Great video!! Thanks!
You're welcome!
Amazing dude. What a great explanation
Thanks Datta! I really appreciate it 👌
Wonderful. Thank you
thank you so much for the amazing explaining
You're welcome!
Very informative video. Simple and clear
Thank you Nishi. Glad you liked it 👍
Great video!
Thanks Alexander! Glad you enjoyed it.
awesome vid!
Thanks! Glad you enjoyed it!
thank for the help
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!
This is very good .
It's very useful!!! Thanks
Glad to hear it! Thanks! 👍
amazing videos , can you make more detailed videos related to snmp would have been helpful for everyone , new to this field
Really good！
Thanks! 👍
Thanks a lot mate
You're welcome!
THANK YOU!!!!!!!!!!
You're welcome!
I think I'm ready for the exam now.
Awesome.. SNMPv2c.
amaZing
Thank you.
You're welcome Carlos! Glad you liked the video.
I love it.
Thank you!
Nice
thank
good
please explain more deeply about OSPF and BGP :)
maybe also SPB 802.1aq
❤
🙏 🙏
Basically, SNMP protocol used for monitoring network.
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.
Can you PLEASE do a BGP video?!?
Thanks. Now do a wireshark
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. 👍
Waiting for NETCONF video :)
Thanks Stailian! I'll add this to my list of suggestions 👍
Easily explained
Which software do you use to make the video? BTW Video is awesome...
Security Not My Problem. back then with snmp v1 and 2c.
Plz make video on Evpn
Thanks for the suggestion Sajid. I'll add it to my list.
just have a doubt.....where is all the commands are running( which software) is it powershell?
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.
"🎶🎶🎶 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!
why didn't you add the SNMP Server Command in the CLI?
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
👀
كيفية تنزيله من المتصفح
god bless you or karma whatever you pick
Thank you!
1:44 Wait, Kevin Wallace said that V1 also had community strings: ruclips.net/video/tg47MZdtcAE/видео.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 👍
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!!
Could there not be a more simpler way to explain SNMP. ?
SNMP, S stands for Simple. Yet, especially with v3, it's anything but simple LOL
The only thing missing is commentary ..
superb