Zabbix aggregate checks displaying old data -- am I doing it wrong?

[Stephen Wood]

I have many aggregate checks, like this example:

grpavg["linux","system.cpu.load[,avg1]","last","0"]

This item is on a pseudo host called "Aggregate". It successfully displays an average of every host in the group. However,...

[wcs1only]

Here's my situation. I have an aggregate item for the network traffic for all hosts:

grpsum["All-Hosts","net.if.out[bond0]","last","0"]

The problem is, if a host goes down, this item will pull the last known value over and over again....

[moseleymark]

Hi. I'm fairly new to Zabbix (and *love* it), so this may be a daft question, though I've been unable to google an answer or find it in the forum archives. I'm using Zabbix as essentially a performance monitoring system. I've got all the actual tests running just fine.

What I've been...