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I had my first bandwidth check up and running 15 minutes after installing.

Initial usage:
Cisco 2921 router (my eline interface) bandwidth usage monitor... 10Mbps interface...

commands.cfg...
define command {
command_name check_eline_bw
command_line /usr/local/sbin/nagios-plugins/check_snmp_netint.pl -H $HOSTADDRESS$ -C -k -M -w5,5 -c8,8 -n $ARG1$
}

And then the service entry....
define service{
use generic-service
host_name ops_router
service_description Eline Bandwidth
check_command check_eline_bw!"GigabitEthernet0/1"
}

Great avenue to add a basic health check.

Works perfectly, out of the box for my Dell R905s & R620s

One of those simple things that is simple to add in, and just works.

Had to modify the NETSTAT variable to work with my linux release... trivial.

Exellent, thanks.

Minor modifications to get this to work on my 2910s.

In your service definitions:

CPU
check_hp_cpu!community!90!195

MEM-FREE
check_hpmemoryfree!community!@2000:30000000!@1000:30000000

Very easy to get running.

Using on Ubuntu server 10.10 client side, and Ubuntu server 10.4 Nagios3 server.

Simple and effective, as the subject states.

10 minutes from download to active monitoring, provided you already have nrpe running of course.

Thanks!

-- Trev Thorpe