librenms-librenms/includes/polling/cisco-vpdn.inc.php

<?php

// CISCO-VPDN-MGMT-MIB::cvpdnTunnelTotal.0 = Gauge32: 0 tunnels
// CISCO-VPDN-MGMT-MIB::cvpdnSessionTotal.0 = Gauge32: 0 users
// CISCO-VPDN-MGMT-MIB::cvpdnDeniedUsersTotal.0 = Counter32: 0 attempts
// CISCO-VPDN-MGMT-MIB::cvpdnSystemTunnelTotal.l2tp = Gauge32: 437 tunnels
// CISCO-VPDN-MGMT-MIB::cvpdnSystemSessionTotal.l2tp = Gauge32: 1029 sessions
// CISCO-VPDN-MGMT-MIB::cvpdnSystemDeniedUsersTotal.l2tp = Counter32: 0 attempts
// CISCO-VPDN-MGMT-MIB::cvpdnSystemClearSessions.0 = INTEGER: none(1)
if ($device['os_group'] == 'cisco') {
    $data = snmpwalk_cache_oid($device, 'cvpdnSystemEntry', null, 'CISCO-VPDN-MGMT-MIB');

    foreach ($data as $type => $vpdn) {
        if ($vpdn['cvpdnSystemTunnelTotal'] || $vpdn['cvpdnSystemSessionTotal']) {
            $rrd_name = array('vpdn', $type);
            $rrd_def = array(
                'DS:tunnels:GAUGE:600:0:U',
                'DS:sessions:GAUGE:600:0:U',
                'DS:denied:COUNTER:600:0:100000'
            );

            $fields = array(
                'tunnels'   => $vpdn['cvpdnSystemTunnelTotal'],
                'sessions'  => $vpdn['cvpdnSystemSessionTotal'],
                'denied'    => $vpdn['cvpdnSystemDeniedUsersTotal'],
            );


            $tags = compact('type', 'rrd_name', 'rrd_def');
            data_update($device, 'vpdn', $tags, $fields);

            $graphs['vpdn_sessions_'.$type] = true;
            $graphs['vpdn_tunnels_'.$type]  = true;

            echo " Cisco VPDN ($type) ";
        }
    }

    unset($data, $vpdn, $type, $rrd_filename);
}//end if