Acquiring accurate inbound/outbound traffic for network switch. Update Interval.

[Chris Sharpe]

Hello,



I have a question about acquiring accurate inbound/outbound traffic with the default Update interval (in sec) set to (60) and how it effects dB size.



About my setup:

Version of Zabbix: 3.2.3



I use the Template SNMP Device and apply it to my network switches. I have roughly 25 network switches mixture of 24 and 48 port. HP/Unifi. Mostly all running at gigabit with fibre only between server rooms at 10GB.



I monitor our UPSs, with a custom template. I only have 5 of those. 



I also use zabbix to monitor VMs in VMware. We have 43 VMs. I use the default VMware Templates to discover and monitor our VMware environment. 



The problem:

With the default Update interval (in sec) set to (60) it misses about just under half the data with our graphs. If I set the interval to 30 - 20 seconds, I get more realistic data. Setting it to 10 is accurate. However, In my previous installations the dB went up to 20-30GB in size with a mysql and it gets quite laggy querying it. I was also housekeeping to only 30 days of data! 



Example (set to 60): I know this machine caps the theoretical limit when passing data but only shows 50Mbps on the graph. I should be seeing 100Mbps and I do see that if I set the update interval to 10 seconds. 







I’ve dumped my old zabbix server. Starting a new fresh one with SSDs. Any tips, please?

[cesarsj]

I'm interested in an appropriate range for items of this type. Unfortunately, my friend, I'm here to look for tips! I inherited a Zabbix with incoming / outgoing traffic items at 5s intervals!

[max.ch.88]

Default template uses the 32bit counters. You need use the 64bit counters for interfaces with speed more than 100Mbps. Look for OIDs into the vendor manuals.