librenms-librenms/includes/discovery/q-bridge-mib.inc.php

<?php

echo("Q-BRIDGE-MIB VLANs : ");

$vlanversion = snmp_get($device, "dot1qVlanVersionNumber.0", "-Oqv", "Q-BRIDGE-MIB");

if ($vlanversion == 'version1')
{
  echo("VLAN $vlanversion ");

  $vlans = snmp_walk($device, "dot1qVlanFdbId", $options = "-Oqn", $mib = "Q-BRIDGE-MIB");

  foreach (explode("\n", $vlans) as $vlan_oid)
  {
    list($oid,$vlan_index) = split(' ',$vlan_oid);
    $oid_ex = explode('.',$oid);
    $vlan = $oid_ex[count($oid_ex)-1];

    $vlan_descr_cmd  = $config['snmpget'] . " -M " . $config['mibdir'] . " -m Q-BRIDGE-MIB -O nvq -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " ";
    $vlan_descr_cmd .= "dot1qVlanStaticName.$vlan|grep -v \"No Such Instance currently exists at this OID\"";
    $vlan_descr = shell_exec($vlan_descr_cmd);

    $vlan_descr = trim(str_replace("\"", "", $vlan_descr));

    if (mysql_result(mysql_query("SELECT COUNT(vlan_id) FROM `vlans` WHERE `device_id` = '" . $device['device_id'] . "' AND `vlan_domain` = '' AND `vlan_vlan` = '" . $vlan . "'"), 0) == '0')
    {
      mysql_query("INSERT INTO `vlans` (`device_id`,`vlan_domain`,`vlan_vlan`, `vlan_descr`) VALUES (" . $device['device_id'] . ",'','$vlan', '" . mres($vlan_descr) . "')");
      echo("+");
    } else {
      mysql_query("UPDATE `vlans` SET `vlan_descr`='" . mres($vlan_descr) . "' WHERE `device_id`='" . $device['device_id'] . "' AND `vlan_vlan`='" . $vlan . "'");
      echo(".");
    }

    $this_vlans[] = $vlan;
  }

  $device_vlans = mysql_query("SELECT * FROM `vlans` WHERE `device_id` = '" . $device['device_id'] . "'");
  while ($dev_vlan = mysql_fetch_array($device_vlans))
  {
    unset($vlan_exists);
    foreach ($this_vlans as $test_vlan)
    {
      if ($test_vlan == $dev_vlan['vlan_vlan']) { $vlan_exists = 1; }
    }
    if (!$vlan_exists)
    {
      mysql_query("DELETE FROM `vlans` WHERE `vlan_id` = '" . $dev_vlan['vlan_id'] . "'");
      echo("-");
      if ($debug) { echo("Deleted VLAN ". $dev_vlan['vlan_vlan'] ."\n"); }
    }
  }
}

unset($this_vlans);

echo("\n");

?>