SNMP item getting network error
I'm monitoring an NVR using "Interfaces Simple SNMP" template for network interfaces discovery.
It uses SNMP v3 and, basically, queries every 3m for interface data.
Recently I've noticed that it is skipping some data from "interface eth0: Bits received".
Every 3m it queries for "eth0: Bits received", but for every 3 queries or so, 1 is missing, like shown below.
Notice that there are 6 minutes gaps between some of the collected data, instead of just 3m.
The same thing does not happen for "bits sent" data, only for "bits received".
Grafana highlights those gaps a little better.
Searching Zabbix Server logs, I've found just a network error for this specific item (net.if.in[ifInOctets.2]). It is from days ago and has not much information.
Despite that, my NVR host is also getting some network errors for other items.
I'm lost right now.
Any ideas why that is happening?
It uses SNMP v3 and, basically, queries every 3m for interface data.
Recently I've noticed that it is skipping some data from "interface eth0: Bits received".
Every 3m it queries for "eth0: Bits received", but for every 3 queries or so, 1 is missing, like shown below.
Code:
Timestamp Interface eth0: Bits received 2021-07-30 11:00:13 43087728 2021-07-30 10:54:12 42927256 2021-07-30 10:51:12 42286456 2021-07-30 10:48:12 42315672 2021-07-30 10:45:13 42692576 2021-07-30 10:39:13 41204944 2021-07-30 10:36:12 41245800
The same thing does not happen for "bits sent" data, only for "bits received".
Grafana highlights those gaps a little better.
Searching Zabbix Server logs, I've found just a network error for this specific item (net.if.in[ifInOctets.2]). It is from days ago and has not much information.
Code:
$ sudo cat /var/log/zabbix/zabbix_server.log | grep "ifInOctets" 1129:20210725:023915.562 SNMP agent item "net.if.in[ifInOctets.2]" on host "NVR" failed: first network error, wait for 15 seconds
Despite that, my NVR host is also getting some network errors for other items.
Code:
25966:20210730:011815.388 SNMP agent item "net.if.out.errors[ifOutErrors.2]" on host "NVR" failed: first network error, wait for 15 seconds 25969:20210730:011830.795 resuming SNMP agent checks on host "NVR": connection restored 25964:20210730:070615.674 SNMP agent item "enterprises.deviceType" on host "NVR" failed: first network error, wait for 15 seconds 25969:20210730:070631.518 resuming SNMP agent checks on host "NVR": connection restored 25967:20210730:080025.111 SNMP agent item "remoteCam[status7]" on host "NVR" failed: first network error, wait for 15 seconds 25969:20210730:080040.485 resuming SNMP agent checks on host "NVR": connection restored 25968:20210730:095515.227 SNMP agent item "physicalVolume[status2]" on host "NVR" failed: first network error, wait for 15 seconds 25969:20210730:095530.749 resuming SNMP agent checks on host "NVR": connection restored
Any ideas why that is happening?