Monitoring Redundant path routers

[Cook, Garry]

There are two plugins available to do what you want. I believe that the
names are check_ifstatus and check_ifoperstatus. check_ifstatus will
check status of an individual router interface, while check_ifoperstatus
monitors all interfaces in a router to determine if any are
administratively up but operationally down. Not sure what type of gear
you're using, but I think these checks may be for Cisco only.
Garry W. Cook, CCNA
Network Infrastructure Manager
MACTEC, Inc. - http://www.mactec.com/
303.308.6228 (Office) - 720.220.1862 (Mobile) 
-----Original Message-----
From: nagios-users-admin at lists.sourceforge.net
[mailto:nagios-users-admin at lists.sourceforge.net] On Behalf Of Samuel
Petreski
Sent: Monday, April 26, 2004 11:33 AM
To: nagios-users at lists.sourceforge.net
Subject: [Nagios-users] Monitoring Redundant path routers


Hi,
 
I was looking into using Nagios for Enterprise wide monitoring and am
very impressed with all the capabilities, but ran into following
question:
 
                                      192.168.0.1          192.168.0.2
192.168.1.21
                        --------------------
--------------------192.168.1.1           --------------------
                        | Router 1     |----------------------------|
Router 2     |----------------------------|  Nagios       |
                        --------------------
--------------------                            --------------------
                  192.168.0.9 \
/  192.168.0.5
                                     \
/
                                      \
/
                                       \
/
                                        \
/
                                         \
/
                                          \
/
                                           \                          /
                                            \                       /
                                             \                    /
                                              \                 /
                            192.168.0.10\               / 192.168.0.6
                                              --------------------
                                              | Router 3     |
                                              --------------------
                                                      |  192.168.2.1
                                                      |
                                                      |  192.168.2.2
                                                -------------
                                                | Switch1|
                                                -------------
 
Can Nagios monitor the individual interfaces between the routers in
order to inform me when a link/interface goes down? I'm mainly
interested if monitoring Router 3, to have Router 1 and Router 2 as
dependencies, but also to know if the link between Router 1 and Router 2
goes down, because Nagios will be able to reach Router 3 through the
link between Router 2 and Router 3.
 
Any help would be greatly appreciated and if further information is
required, please feel free to let me know.
 
--Samuel
 
P.S. If this is a cross post, please let me know where I can find the
original post.
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