Dependecies of triggers

[Andreas Bollhalder]

Hello all

I have two questions about dependencies of triggers:

1. Agent ping and active checks
When having a trigger for the agent ping not returning data, does I get any advantige when making all active checks of the same host depending on the agent ping ? As far I can see, all active checks stays until I get new data and no action would be triggered if not using any time constraints in the trigger expression of the acitve checks.

Or is it better to skip the dependencies and ZABBIX has less work load ?

2. SNMP value and ICMP ping
When having a trigger for ICMP ping, does it make sense to make a dependency for all SNMP triggers of the same host on the ICMP ping trigger ?

Would there still be triggered an action for SNMP triggers when the host is unreachable by ICMP and there is no dependency ?

Sorry for this questions. I know I could make test with some spare hardware which I currently doesn't have. Thanks to all for any suggestion about this.

Andreas

[Alexei]

1. Agent ping and active checks
When having a trigger for the agent ping not returning data, does I get any advantige when making all active checks of the same host depending on the agent ping ? As far I can see, all active checks stays until I get new data and no action would be triggered if not using any time constraints in the trigger expression of the acitve checks.

Or is it better to skip the dependencies and ZABBIX has less work load ?

2. SNMP value and ICMP ping
When having a trigger for ICMP ping, does it make sense to make a dependency for all SNMP triggers of the same host on the ICMP ping trigger ?

Would there still be triggered an action for SNMP triggers when the host is unreachable by ICMP and there is no dependency ?

Sorry for this questions. I know I could make test with some spare hardware which I currently doesn't have. Thanks to all for any suggestion about this.

ZABBIX calculates status of trigger ONLY (with a couple of exceptions related to nodata() and time-relate functions) on receipt of new values for the trigger.

No new values -> no trigger status changes -> no notifications. It makes no sence to define dependencies for triggers which won't get any new values (like server is behind a router and the router is down).