Monitor Cisco Uptime

[Fernando Feijo]

>>>What other services do you recommend monitoring for up/down status besides ping?
You could also do ssh or even telnet, if you have them enabled.

You did not ask, but a comment on uptime. You can use it to detect router bounces, detecting rogue reloads or perhaps system crashes. I have it to go to critical whenever the uptime is below X minutes, and email out. Network tests such as ping, snmp or ssh availability might miss a quick box's trip down, but uptime will always catch a reload.

Fernando

**
On Oct 20, 2012, at 11:09 AM, Will Bashlor <wbashlor at atcnetworks.net> wrote:

> Hi list,
>  
> Well I’m not sure which of the steps below worked but it started working in Nagios and the check_snmp command works from cli. I’d still be interested in a guide or the correct steps I should have taken. I’m on a test vm now but will be reinstalling on a production vm later.
>  
> root at atcdeb01:~# /usr/lib/nagios/plugins/check_snmp -H x.x.x.x -C public -o sysUpTime.0
> SNMP OK - Timeticks: (448261008) 51 days, 21:10:10.08 |
> root at atcdeb01:~#
>  
> Now I’ve got to figure out a couple more things. Feel free to respond if you can help.
>  
> 1.)    Even though ping and uptime show ok, the test Cisco host status went to “PENDING” in Nagios…?
> 2.)    Not sure how to get rid of part of the response I don’t need for uptime. I only need “51 days, 21:10:10.08” under Status Information in Nagios
>  
> Another thing, I’m looking for advice. For monitoring up/down status’ for core Cisco routers/switches my idea is to monitor snmp response and ping, but I don’t want to get 2 alerts from 1 device if it were to go down.
>  
> So can I get ping or snmp alerts if they go down individually and only one alert if the device is down hard? What other services do you recommend monitoring for up/down status besides ping?
>  
> Or is ping sufficient enough in your opinion? I may configure text alerts only on ping and maybe just email alerts for snmp, or no alerts for snmp. I like seeing uptime in Nagios though, it makes it easy to see if any devices have just rebooted after an event.
>  
> I continue to research every day but I am interested in your thoughts and opinions if you’d like to share.
>  
> Oh, can I integrate Nagios with my Cacti? Sorry for all the questions but will be very grateful for any responses.
>  
> Thanks all very much,
>  
> -Will
>  
> From: Will Bashlor [mailto:wbashlor at atcnetworks.net] 
> Sent: Saturday, October 20, 2012 11:23 AM
> To: Nagios Users List
> Subject: [Nagios-users] Monitor Cisco Uptime
>  
> Hi list,
>  
> I’ve searched to no avail, this is a basic question with hopefully a simple answer.
>  
> I’m a long time cacti user (windows), I know basic Linux knowledge, new to Nagios. I have a fresh install of Debian stable (squeeze) with apt-get installed Webmin, ssh, apache2, and Nagios 3.2.1, nagiosql, and whatever dependencies. I am trying to setup monitoring of our core Cisco routers and switches. I have configured 2 services, ping and uptime. Ping works great of course but I can’t get a valid response from check_snmp for uptime. Here’s the command I’ve tried from the command line:
>  
> root at atcdeb01:/# /usr/lib/nagios/plugins/check_snmp -H x.x.x.x -C public -o sysUpTime.0
> no output, it just hangs
>  
> I’ve also tried
>  
> root at atcdeb01:/# /usr/bin/snmpget -v2c -c public x.x.x.x sysUpTime.0
> sysUpTime.0: Unknown Object Identifier (Sub-id not found: (top) -> sysUpTime)
>  
> Obviously with the correct IP and community string
>  
> If I try this I get:
>  
> root at atcdeb01:/# /usr/bin/snmpget -v2c -c public x.x.x.x 1.3.6.1.2.1.1.3.0
> iso.3.6.1.2.1.1.3.0 = Timeticks: (447923619) 51 days, 20:13:56.19
>  
> So using OID names aren’t working. I’ve researched with not much luck.
>  
> From here and various other sites I’ve tried…
> http://wiki.debian.org/SNMP
>  
> Added “deb http://ftp.us.debian.org/debian squeeze main contrib non-free” to /etc/apt/sources.list
>  
> apt-get update
>  
> Then apt-get install snmp-mibs-downloader
>  
> Then “download-mibs”. Restart snmp.
>  
> All to no avail. What am I doing wrong? Is there a simple guide I can use so check_snmp works with oid names for Cisco and other devices?
>  
> Thanks for any help you can provide.
>  
> Best Regards,
>  
> -Will
>  
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