Introduction to SNMP

This topic is to discuss the following lesson:

Great lesson! I had to implement an SNMP change control recently. Nice to have a great refresher.

good explaination

Fahad ALFadani
KSA

The tip for Observium is really helpful, thanks!

Hi Wilfried,

You might also like LibreNMS.

It’s the exact same thing as Observium but it’s free. It supports instant updates and alerting out of the box. For Observium you’ll have to pay when you want automatic updates and alerting.

Rene

Hi Rene,
What is the difference between SNMP get and get next?

Hi Ananth,

That’s a good question.

We have already seen in this lesson the usage of SNMP GET sent from the SNMP Manager is to gather a specific object instance from the SNMP agent.

Or The GETNEXT command requests a list of instances from a remote entity, but expects the next variable in the tree back. So meaning If a GETNEXT is issued on an object then the agent MUST return the next instance in the MIB tree.

Does it make sense?

Under SNMPv3 should it be “noAuthnoPriv” instead of “noAutonoPriv”? :smiley:

1 Like

Hello Chris

Thanks for catching that, I’ll let @ReneMolenaar know.

Laz

Hi Rene,

Need to confrm if we have configure SNMPV3 on NMS and we are configuring SNMPV2 config on router, Whether it will work.

Hi Owais,

The different SNMP versions are not compatible with each other but if you have a NMS that supports SNMPv3, there’s a 99% chance it also supports SNMPv2.

Rene

Rene, my greetings!

There is a little mistake, SNMP version 2 introduced the notion of an INFORM

SNMP version “3” deals with this problem with an alternative message which uses an acknowledgment called the inform message.

Best regards,
Aleksei

Hello Aleksei,

You are right, I’ll update and fix this. Thanks for sharing!

Rene

Hi guys,

Do you know how how connect grafana with observium?
Or even can you provide a guide to setup grafana for networking devices?

Thanks

Hello Giovanni

We don’t currently have configuration examples or lessons that include Grafana or Observium. However, you can find some information and step by step procedures about Grafana and how to use it for various Cisco devices. Some example links can be found below:


Grafana on Cisco.com
Observium on Cisco.com

I hope this has been helpful!

Laz