SNMPv3 Setup - Cisco 3750

Question

I am not a network guru by any means but need to setup our router/switch to use SNMPv3. I am installing What's Up Gold on our system and configured the settings (changed for this post) as follows:

Username: testusername
Authentication
Protocol: sha
Password: testpassword

On my router, I have ran the following:

snmp-server view TESTVIEW mib-2 included 

snmp-server group TESTGROUP v3 auth read TESTVIEW 

snmp-server user ALL TESTGROUP v3 auth sha testpassword 

snmp-server host 192.168.12.2 version 3 auth testusername 

snmp-server host 192.168.12.2 informs version 3 auth testusername

After inserting these commands, I go back to the SNMP software and attempt to discover the seed address 192.168.12.254, the gateway, but cannot receive a valid connection. I turned debugging on the router but receive nothing in show log. I setup SNMPv2 to test and see if it could even see that and it worked just fine...I am guessing I am missing something in my router configuration...any ideas?

Answer 1

I think your username is wrong in your commands, try substituting testusername for ALL

snmp-server view TESTVIEW mib-2 included 
snmp-server group TESTGROUP v3 auth read TESTVIEW 
snmp-server user testusername TESTGROUP v3 auth sha testpassword 

Answer 2

I agree with glallen that you should be substituting testusername for all in your snmp-server user command.

But if that doesn't work, for troubleshooting purposes, I would start with a more basic SNMPv3 configuration, see if it works and then start adding a more complex configuration from there.

My suggestion start with:

snmp-server group TESTGROUP v3 auth
snmp-server user testusername TESTGROUP v3 auth sha testpassword  

per: http://networklessons.com/network-management/how-to-configure-snmpv3-on-cisco-ios-router/#ixzz2rzU2BWJa