Discovering CallManager on LMS via SNMPv3

Question

Hello,
As a troubleshooting step, I have tried to manually add the Call Manager Publisher and Subscriber to the LMS portal using SNMPv2. It worked.
My objective is to have Call Manager reachable through SNMPv3.
Below are the steps that I've done so far:
Configure SNMPv3 from Call Manager Serviceability
Authentication required using SHA
Privacy required using AES128
apply to all nodes
Manually add Call Manager on LMS with the appropriate credentials
From the "Archive Summary", I can see the following error message:
CM0056 Config fetch failed for Call Manager Publisher
Cause: CM0204 Could not create DeviceContext for 133
Cause: CM0202 Could not access <Publisher_IP_address> via SNMP.
Action: Check the Read Community string
Action: Check if required device packages are available.
Action: Check if protocol is supported by device and required device package is installed.
What can I do to troublehsoot this issue?
Thanks,
Justine.

Answer 1

Seems the SNMP v3 config is not correct.
Please see my comments inline (in bold blue) as per your config, in what i think is incorrect:
snmp-server view LMS iso included     --> correct
snmp-server view LMS ####at excluded     --> dont know if #'s are by mistake
snmp-server view NMS snmpUsmMIB excluded --> Not sure if NMS is typo or you made a new view after LMS.
snmp-server view LMS snmpVacmMIB excluded      --> correct
snmp-server view LMS snmpCommunityMIB excluded     --> correct
snmp-server group LMS v3 priv read v3read write v3write notify LMS `--> Incorrerect, as after read and write you should have a SNMP View which is configured with "snmp-server view" command, which is either LMS or NMS in your case. There is no v3read or v3write configured.
snmp-user LMS LMS v3 auth md5 authPW priv aes 128 privPW      -->Not sure if "snmp-user" is again a typo, else everything is correct.
snmp-server host x.x.x.x traps version 3 priv NMS      --> There is no user as 'NMS'. after priv it should be either "SNMPv1/v2c community string or SNMPv3 user name". I dont see any username as NMS, as per config it should be LMS.
-Thanks