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In this video, CBT Nuggets trainer Jeremy Cioara gives a brief overview of SNMP version 1 and 2, then provides a tutorial on the configuration of SNMP version 3 on Cisco IOS devices. Learn how SNPv3 works with this MicroNugget from CBT Nuggets.

SNMPv3 has been out for years and it’s super secure. But people are slow to pick it up because version 2 is just so easy, even though it lacks almost any security whatsoever.

Plus, go out searching for documentation or guidance about v3 and it feels like it was written to be confusing.

The history of SNMP helps explain why security was the last upgrade. SNMPv2 was really little more than a feature pack upgrade to SNMPv1, which itself was an incredible thing just for existing.

People found SNMP exciting simply because there was finally an open standard to monitor devices. V2 lacked any authentication or encryption methods. It had a community value, but no other security built-in.

V3 has taken a long time to get adopted because it’s a significant protocol change and it takes implementing change on a ton of different devices. But it brought with it the capability to do authentication and encryption.

Watch Jeremy configure a Cisco IOS device for hands-on understanding of SNMP Views, Groups, and Users.

0:30: Comparing SNMPv3 with v1 and v2
1:25: Object Identifiers and Management Information Base
3:30: The three new elements in SNMPv3
3:50: SNMP View explained
4:20: SNMP Group defined
4:50: Configuring SNMP Views and Group
9:15: Configuring SNMP Users
10:40: Adding device(s) to SNMPv3

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