[c-nsp] IP SLA / EEM Scripting

[Aaron Riemer]

Yes it would be preferable not to have dodgy hardware! But we have to
put up with it for a little while longer.

Thanks for those suggestions guys. Since I already have a telnet perl
script I will mod that to do the ping beforehand.

Thanks,


Aaron.


-----Original Message-----
From: Pete S. [mailto:pshuleski at gmail.com] 
Sent: Friday, 21 August 2009 12:52 PM
To: Aaron Riemer
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] IP SLA / EEM Scripting

A perl script with Net:Ping, and Net:Telnet might be easier,
especially if you have a server dedicated to device management.  Both
are fairly trivial modules with many examples on line.  Have cron run
the script every 5(whatever) min.  If ping fails, part of the scripts
logic is to telnet and reload.

Part of the script's output can be the ping data, which cacti can
graph as a datasource.  You may even see a trend when its about to
die.

Wouldn't you rather solve the problem with the vendor, as to why the
device needs the reset so often, or find new hardware that doesn't
need the reset? :)

--Pete

On Thu, Aug 20, 2009 at 9:26 PM, Aaron Riemer<ariemer at wesenergy.com.au>
wrote:
> Hey Guys,
>
> I am hoping to use a combination of IP SLA and EEM to run a script
when
> a certain event occurs. For example we have a cellular router that
> sometimes requires a reset. We have a backup link so I would like to
> automate this reset process. What I would like to do is to monitor the
> cellular device with IP SLA icmp probes and after a certain number of
> failures run a script that can telnet to the device via the back door
> and issue commands to reset.
>
> I have done some digging but I am unable to see if EEM supports the
> ability for a router to actually telnet to another device and issue
> commands. I may have to use our network monitoring app to run the
> script. Could Cacti do this?
>
> Thanks for any suggestions.
>
> Aaron.

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