Sometimes, Network Director will poll the devices with the snmpv2 community even if we discover the device with snmpv3. We could see below logs from the devices in messages log:

Feb 4 18:51:39.526 2025 DeviceName snmpd [17880]: SNMPD_AUTH_FAILURE: nsa_log_community: unauthorized SNMP community from <Junos Space IP> to <Device IP> (public)

Here public is the community name.

This is due to the snmpv2 configuration in the Network Director's database

Follow the below steps to fix the issue:

• Check if the stale entry exists in the ND table

mysql -ujboss -p$(grep mysql.jboss /etc/sysconfig/JunosSpace/pwd | awk -F= '{print $2}') build_db -e "select id, COUNT(community), snmpVersion, userName from CM_NWDSNMPSETTING where community='public'"

+---------+------------------+-------------+----------+

| id     | COUNT(community) | snmpVersion | userName |

+---------+------------------+-------------+----------+

| 1376257 |               1 |          1 | NULL    |

+---------+------------------+-------------+----------+

1 row in set (0.00 sec)

• Please remove it using the below SQL command:

mysql -ujboss -p$(grep mysql.jboss /etc/sysconfig/JunosSpace/pwd | awk -F= '{print $2}') build_db -e "delete from CM_NWDSNMPSETTING where community='public'"

Note: Please take a DB backup before running the delete command to remove the entry from the DB.