Could you use the check_dns plugin? Then if you couldn't resolve the host 
through either interface, it would alarm. It doesn't require an 
expected-address. I check a round-robin DNS entry this way, making sure it just 
resolves to something.

C O N V I V A
Kimberly McKinnis | Systems Engineer, Service Delivery | k...@conviva.com | 
Mobile: 724.612.2716 |
2 WATERS PARK DRIVE  |  SUITE 150  |  SAN MATEO  |  CA  |  94403  | 
www.conviva.com |

From: <radu.p...@technomatic.de<mailto:radu.p...@technomatic.de>>
Reply-To: Nagios Users List 
<nagios-users@lists.sourceforge.net<mailto:nagios-users@lists.sourceforge.net>>
Date: Tue, 6 Sep 2011 08:52:31 +0300
To: 
<nagios-users@lists.sourceforge.net<mailto:nagios-users@lists.sourceforge.net>>
Subject: [Nagios-users] Aggregate multiple interfaces/services/hosts

Hello,

I would like to monitor a couple of devices ( servers and witches) that are 
connected to the network via at least two interfaces. Nagios server is 
connected as well over two interfaces to the LAN. My question is:

Is there any way to aggregate the monitored services/hosts into a single object 
that gives the critical status only when all aggregated objects have this 
status?

For example: the Nagios system has two network interfaces: 192.168.0.1 and 
192.168.1.1. I would like to monitor a DNS server connected to the network via 
192.168.0.2 and 192.168.1.2 IP addresses. Of course I can reach the DNS server 
from Nagios two ways: either via the 192.168.0.1 interface or via 192.168.1.1. 
My target is to issue a warning/critical signal only when Nagios cannot query 
the DNS server on none of the IP addresses. Same should apply for hosts and 
network equipment and the service group should also provide performance data.

I have already gave a shot with Nagios BPI, but unfortunately I cannot use the 
service group to map it in PNP4Nagios.

Thank 
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