‎06-10-2025 05:17 AM
Hi all
We have a Zabbix Server for collect snmp information.
We have the problem that zabbix cannot connct with snmpv3 credentials to xiq-se.
The first time zabbix can connect but after a while we see with "service snmpd status" that Athentication failed for snmpuser. I checked the snmpv3 credentials twice.
Have everyone done the same or with an other snmp collector?
Or did we have change some configuration at snmpd.conf?
Thanks for some advice.
Jochen
Solved! Go to Solution.
‎06-10-2025 06:51 AM
If you are lost with a topic, go back to the basic checks.
1. check what you have initially configured
cat /usr/postinstall/snmpconfig.properties
2. check the SNMP daemon settings
nano /etc/snmp/snmpd.conf
3. check if the SNMP daemon running
ss -lnup | grep 161
4. use LINUX generic tools to check the service
snmpwalk -v 3 -l authPriv -u snmpuser -a MD5 -A snmpauthcred -x DES -X snmpprivcred 10.8.255.5 iso.3.6.1.2.1.1
5. go back to your application vendor and open a ticket
thanks
Markus
‎06-12-2025 05:35 AM
I guess you mean 4 instead of 3.
If you get an error it means the SNMP daemon is not in the right place.
‎06-10-2025 05:32 AM
I would be curious -- how does this issue resolve itself? Do you take action?
You can always take a tcpdump trace and observe the SNMP transaction flow and when the issue re-appears can decode the trace (assuming SNMPv3) to confirm if the payloads continue to be encoded properly and which endpoint essentially stops playing nice.
Site Engine inventoried to itself (as numerous customers do) or via third party tools AFAIK has never been reported (until now) as failing local SNMP. I would suspect that if the service output is reporting that authentication failed for snmpuser that the originator (Zabbix) is the problem point and is not properly encoding requests...