We have noticed a bug with SNMP Availability. We monitored remote links and when the connection of a one link down, the SNMP Availability delayed 20/30 minutes to notice the link is Unavailable.

See the logs of Zabbix server:

2374485:20230828:183932.195 SNMP agent item ".1.3.6.1.2.1.2.2.1.8.wan[GigabitEthernet0/0.2]" on host "XXXXXXX" failed: first network error, wait for 15 seconds
2374533:20230828:183955.039 SNMP agent item ".1.3.6.1.2.1.2.2.1.10.lan[GigabitEthernet0/1]" on host "XXXXXXX" failed: another network error, wait for 15 seconds
2374586:20230828:184003.047 SNMP agent item ".1.3.6.1.2.1.2.2.1.16.lan[GigabitEthernet0/1]" on host "XXXXXXX" failed: another network error, wait for 15 seconds
2374440:20230828:184004.225 SNMP agent item ".1.3.6.1.2.1.2.2.1.2.wan" on host "XXXXXXX" failed: another network error, wait for 15 seconds
2374508:20230828:184027.085 temporarily disabling SNMP agent checks on host "XXXXXXX": interface unavailable

But se the screenshot of a item that does not get the logs. The connections downs 18:09, but the Zabbix server indicates 18:39.

See the graphs of time of response too. The indicates too that connection downs 18:09.

We are in the 6.4.4 version. Can you check this problem please?

Thanks!