Zabbix agent on is unreachable for 5 minutes

[karanik]

Hi
When i take scheduled backup of my Infrastructure and my network load is high, I receive many notification "Zabbix agent on is unreachable for 5 minutes"
I tried to rise up the connection of mysql connections without solving the problem.

/etc/mysql/mysql.conf.d/mysqld.cnf
max_connections = 1024

Also I tried to add the below lines on /etc/zabbix/zabbix_server.conf

#StartPollers=375
StartPollersUnreachable=40
StartTrappers=80
StartPingers=20
CacheSize=1G
StartDBSyncers=4
HistoryCacheSize=512M
TrendCacheSize=512M
#HistoryTextCacheSize=512M
Timeout=15
#StartVMwareCollectors=0
#VMwareFrequency=60
#VMwareCacheSize=8M
#VMwareTimeout=10

What do you suggest me for this situation?

[karanik]

I resolve this by raising Timeout on the configuration of client.