SNMP is installed in the server and SNMP request is getting timed out
Make sure whether SNMP is installed and running in the server. Also refer here in case you are not able to view monitored data.
If SNMP is running and the SNMP request is still getting timed out, follow the below troubleshooting steps :
- Check whether the target server is reachable from Applications Manager host.
- Check if SNMP UDP port of the target server is open from Applications Manager host
- Check if any firewall is blocking SNMP traffic between Applications Manager and the target server. Also check if there is any security is present to restrict access from Applications Manager host.
- Increase the timeout by editing and modifying the value of the monitor.
- Please check whether is SNMP configured correctly. Please re-install SNMP in the server and check. Learn more.
If few OIDs alone show data and few others do not :
- The MIB (in which the OID is present ) may not have been implemented in the SNMP agent. Please check with the vendor.
- Increase the timeout by editing and modifying the value of the monitor.
- If the MIB is implemented, then verify the SNMP configuration. Try re-installing SNMP in the server. Learn more.
SNMP access restriction
Windows
- Click Start, go to Control Panel -> Administrative Tools, and then click Computer Management.
- In the console tree, expand Services and Applications, and then click Services.
- In the right pane, double-click SNMP Service.
- Click the Security tab.
- Check if Accept SNMP packets from these hosts is selected.
- If yes, click Add and type Applications Manager Host/IP.
Linux
- In linux, iptables is configured to allow SNMP traffic from trusted sources alone.
- Execute the below command to list down all the rules for SNMP UDP port ( 161 is the default SNMP port )
$ sudo iptables -nvL | grep '161' - If entries are present, run the below commands to allow traffic from Applications Manager host
$ iptables -A INPUT -s <ip addr> -p udp -m udp --dport 161 -j ACCEPT
$ iptables -A OUTPUT -p udp -m udp --sport 161 -j ACCEPT
You can verify the SNMP connection and the OID values using our MibBrowser tool. More details
If the issue still exists, reach out to our support with the screenshot of the error obtained to appmanager-support@manageengine.com along with the latest Support Information File (SIF) from Applications Manager with print all logs enabled for analysis.
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