Alerting tool

[Peter Charbonneau <Peter.Charbonneau () WILLIAMS EDU>]

We have a few tools that page us on "down" events.  All of these down
events are hardware or service related (ping of the device, loss of
HTTPD service).

I just ran into a case where our ISP stopped advertising our BGP
routes.  I would like to know if there is a tool out there that can
page/alert on loss of data; and not just on total loss of data.  My
BGP advertisements were going out, and I was getting acknowledgments
for that service.


I would like to be able to alert on:

SNMP read interface OID string to get bytes in.  In one (two, five)
minutes read the counter again, if the difference between the two
reads is less than value x, but more than value y, page as "down".


I would prefer and open source tool.  I am using Cisco routers.

What's up Gold doesn't seem to be able to do this.  Is there,
potentially an addon for Cacti that can do it?  Using Nagios for this
seems to be like swatting a fly with a sledge hammer, but ...

Anyone out there doing anything like this?



PeteC


Peter Charbonneau
Sr. Network and Systems Administrator
Williams College
(413) 597-3408 (office)
(413) 822-2922 (cell)
OIT will NEVER ask for your password!