Discovery Rules - What am I doing wrong?

[patrick.thomas]

Hello everyone,

I have the agent installed on two test machines. Let's say they are 172.16.1.1 and 172.16.1.2

Name: Agent Check

Discovery by Proxy: No Proxy

IP Range: 172.16.1.1

Update Interval: 1h

Checks: Zabbix Agent "system.uname"

DUC: IP Address

Host Name: Zabbix Agent "system.uname"

Visible Name: Host name

Enabled: Yes

If I create a discovery rule to check those IP's explicitly then they will appear in the discovered devices no problem. Now, if I Clone this rule [for accuracy], disable the old one and change the new rule to check for IP Ranges, like the following list, it does not find any devices. Can anyone explain what Im doing wrong?

172.16.1.1-255,172.16.2.1-255,172.16.4.1-255,172.16.5.1-255,172.16.6.1-255,172.16.7.1-255,172.16.8.1-255

The above is a representative list, but the real one would include practically the same format. I also enter it as listed above.

I would appreciate any and all thoughts on this!

Thanks

[patrick.thomas]

An additional question that may be related to why I'm having problems, but would there be any issue with overlapping Agent Checks?

Say if I have a rule that explicitly checks an IP address of 172.16.1.1, and another that does 172.16.1.1-254 - would this cause problems?

Many Thanks!