Jim, I already have configured the parent relationship, and for visualization (status map), the network structure is exactly what it is. I do now that the host dependency works for notify exactly where the problem is, that's the reason, I send the last message to get some help on how to set it. I do appreciate your help. Eduardo <div class="gmail_quote">On Sun, Mar 8, 2009 at 3:19 PM, Jim Avery <<a href="mailto:jim@jimavery.me.uk">jim@jimavery.me.uk</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> 2009/3/8 Eduardo Barreto <<a href="mailto:lecb79@gmail.com">lecb79@gmail.com</a>>: <div class="im">> I need an explain on how to exactly set the hosts dependencies, If I got a > server linked to switch and that switch linked to a router, do I have to set > the server to be a host dependent of the router or just for the switch? > > If the switch fails nagios won´t alert me about the server but only for the > switch, isn´t it? </div>Normally you should use parent relationships instead of host dependencies. See <a href="http://nagios.sourceforge.net/docs/3_0/networkreachability.html" target="_blank">http://nagios.sourceforge.net/docs/3_0/networkreachability.html</a> Cheers, Jim </blockquote></div>