[c-nsp] SNMP traffic monitoring / alerting

[Aaron R]

Hi Howard,

You are absolutely correct. I am already graphing / totaling the amount of
traffic out the interface I just need a way to be alerted when it exceeds a
particular threshold and we have to pay our ISP big bucks for going over our
limit. Saves me from checking graphs each day!

Cheers,

Aaron.

-----Original Message-----
From: Howard Jones [mailto:howie at thingy.com] 
Sent: Thursday, February 14, 2008 5:36 PM
To: Aaron R
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] SNMP traffic monitoring / alerting

Aaron R wrote:
> Hey Guys,
>
>  
>
> Has anyone come across a good app (open source or not) that will monitor
the
> amount of traffic flowing in/out a particular interface and alert you once
a
> certain threshold has been reached? Alerting via email would be
preferable.
> I don't really have the time to invest in writing a script in perl as I
can
> see there will be headaches with keeping track of the interface counter
> resets.
>
>  
Are you looking for flow *rate* (bits/sec) or total bytes transferred to 
alert on? It's not clear from your replies - you seem to be concerned 
about the size of SNMP counters which implies it's the total you a re 
looking for.

Cacti (with it's plugin architecture and the Threshold plugin) will do 
this for you. If you need to alarm on total transferred, then you might 
need to make a new data source in Cacti - I've never wanted that 
particular alarm. See http://www.cacti.net/
It also does a *lot* more, so possibly is too much.

Howie