librenms-librenms/includes/polling/mempools/dlink.inc.php

<?php
/*
 * LibreNMS
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.  Please see LICENSE.txt at the top level of
 * the source code distribution for details.
 *
 * @package    LibreNMS
 * @link       http://librenms.org
 * @copyright  2017 Thomas GAGNIERE
 * @author     Thomas GAGNIERE <tgagniere@reseau-concept.com>
 */

d_echo('Dlink');
$memory_oid = '.1.3.6.1.4.1.171.12.1.1.9.1.4.1';
$perc = snmp_get($device, $memory_oid, '-OvQ');
if (is_numeric($perc)) {
    $mempool['used']  = $perc;
    $mempool['total'] = 100;
    $mempool['free']  = 100 - $perc;
} else {
    $dlink_mempools = snmp_get_multi_oid($device, "dEntityExtMemUtilTotal.$mempool_index dEntityExtMemUtilUsed.$mempool_index dEntityExtMemUtilFree.$mempool_index", '-OUQs', 'DLINKSW-ENTITY-EXT-MIB');
    $mempool['total'] = $dlink_mempools["dEntityExtMemUtilTotal.$mempool_index"];
    $mempool['used'] = $dlink_mempools["dEntityExtMemUtilUsed.$mempool_index"];
    $mempool['free'] = $dlink_mempools["dEntityExtMemUtilFree.$mempool_index"];
}