Timeout while connecting to "(ip)"

[FildaSmile]

Hello, i have strange issue.

I used ZBX 4.4 and i have (among others) four servers added, i monitored them via SNMPv3 and with no problem , recently i installed ZBX 5.0 and import host templates from 4.4 -> two of the hosts run without problem and recieve data, but other two hosts not, configuration of hosts is exactly same, macros are same and also values of macros are same.

When i turn on old ZBX 4.4 all four hosts are connected and recieving data, when i turn on ZBX 5.0 only two of hosts are recieving data. Other hosts like hypervisors, VMs, network devices, storage are recieving without problems and delays.

Can anyone advice what should i check ?

here is what i set in zabbix_server.conf

StartPollers=5
StartPollersUnreachable=2
StartDiscoverers=5
StartVMwareCollectors=20
VMwareFrequency=60
VMwarePerfFrequency=60
VMwareCacheSize=64M
VMwareTimeout=30
StartSNMPTrapper=1
CacheSize=64M
ValueCacheSize=16M
Timeout=4 (Specifies how long we wait for agent, SNMP device or external check (in seconds))

I checked also Zabbix server health graphs and there is nothint overloaded or reporting error.

[FildaSmile]

I got it - Timeout=4 (Specifies how long we wait for agent, SNMP device or external check (in seconds)) , i raised to 30 and now it working sorry for that i figured it after posting this question.