[Nagios-users] "Unreachable" vs "Down" state

[Dale C. (lists) <li...@bl...>]

Hi all

I'm having some trouble getting my head around this issue, and I cant
find the answer in the documentation.

What determines that a host is in an "unreachable" state as opposed to a
"down" state?

I have two hosts configured, servername and servername-core. 
servername-core is the router to which servername connects, and is a
parent of servername.

However when servername-core goes down, both servername-core and
servername go into a down state (although servername-core is correctly
shown as a blocking network outage).  I was expecting servername-core to
be "down" and servername to be "unreachable".

Does the detection of an "unreachable" state require the configuration
of a hostdependancy, or should it work from just setting it up the
required parent line?

Thanks

Dale
-- 
Dale Clapperton (lists) <li...@bl...>