<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <meta name=ProgId content=Word.Document> <meta name=Generator content="Microsoft Word 9"> <meta name=Originator content="Microsoft Word 9"> <link rel=File-List href="cid:filelist.xml@01C42B91.782A8000">  <style>  </style> </head> <body lang=EN-US style='tab-interval:.5in'> <div class=Section1> Peter,<o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> Thank you very much for replying to my post. I thought of using SNMP traps in order to be able to accomplish this, but what if the interface of the Router goes down to which I send the SNMP traps? Nagios than is going to think that the whole Router is down, which is not correct. <o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> If I send traps to Interface 192.168.0.10 on Router 3, and that interface is down, the router is not necessarily down, only the that interface.<o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> --Samuel<o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> -----Original Message----- From: Peter Gutmann [mailto:peter.gutmann@db.com] Sent: Monday, April 26, 2004 1:12 PM To: Spencer Horn <shorn Cc: nagios-users@lists.sourceforge.net; nagios-users-admin@lists.sourceforge.net; petreski@ksu.edu Subject: Re: [Nagios-users] Monitoring Redundant path routers<o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> Why can't you use SNMP for this? The line up and the line down events should generate SNMP traps. At the very least, could you use SNMP mib to poll the status of the device.... ---- Peter Gutmann Peter.Gutmann@db.com<o:p></o:p> -----Original Message----- From: nagios-users-admin@lists.sourceforge.net [mailto:nagios-users-admin@lists.sourceforge.net]On Behalf Of Samuel Petreski Sent: Monday, April 26, 2004 12:33 PM To: nagios-users@lists.sourceforge.net Subject: [Nagios-users] Monitoring Redundant path routers <![if !supportEmptyParas]> <![endif]><o:p></o:p> Hi,<o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> I was looking into using Nagios for Enterprise wide monitoring and am very impressed with all the capabilities, but ran into following question:<o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> 192.168.0.1 192.168.0.2 192.168.1.21<o:p></o:p> -------------------- --------------------192.168.1.1 --------------------<o:p></o:p> | Router 1 |----------------------------| Router 2 |----------------------------| Nagios |<o:p></o:p> -------------------- -------------------- --------------------<o:p></o:p> 192.168.0.9 \ / 192.168.0.5<o:p></o:p> \ /<o:p></o:p> \ /<o:p></o:p> \ /<o:p></o:p> \ /<o:p></o:p> \ /<o:p></o:p> \ /<o:p></o:p> \ /<o:p></o:p> \ /<o:p></o:p> \ /<o:p></o:p> \ /<o:p></o:p> 192.168.0.10\ / 192.168.0.6<o:p></o:p> --------------------<o:p></o:p> | Router 3 |<o:p></o:p> --------------------<o:p></o:p> | 192.168.2.1<o:p></o:p> |<o:p></o:p> | 192.168.2.2<o:p></o:p> -------------<o:p></o:p> | Switch1|<o:p></o:p> -------------<o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> 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.<o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> Any help would be greatly appreciated and if further information is required, please feel free to let me know.<o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> --Samuel<o:p></o:p> <![if !supportEmptyParas]> <![endif]><o:p></o:p> P.S. If this is a cross post, please let me know where I can find the original post.<o:p></o:p> </div> </body> </html>