diff --git a/centreon-plugins/src/check_centreon_snmp_memory b/centreon-plugins/src/check_centreon_snmp_memory
new file mode 100644
index 000000000..8855c303f
--- /dev/null
+++ b/centreon-plugins/src/check_centreon_snmp_memory
@@ -0,0 +1,250 @@
+#! /usr/bin/perl -w
+#
+# $Id: check_grah_real_memory.pl,v 1.2 2005/07/27 22:21:49 wistof Exp $
+#
+# Oreon's plugins are developped with GPL Licence :
+# http://www.fsf.org/licenses/gpl.txt
+# Developped by : Julien Mathis - Mathieu Mettre - Romain Le Merlus - Yohann Lecarpentier
+#
+# Modified for Oreon Project by : Mathieu Chateau - Christophe Coraboeuf
+#
+# The Software is provided to you AS IS and WITH ALL FAULTS.
+# OREON makes no representation and gives no warranty whatsoever,
+# whether express or implied, and without limitation, with regard to the quality,
+# safety, contents, performance, merchantability, non-infringement or suitability for
+# any particular or intended purpose of the Software found on the OREON web site.
+# In no event will OREON be liable for any direct, indirect, punitive, special,
+# incidental or consequential damages however they may arise and even if OREON has
+# been previously advised of the possibility of such damages.
+
+##
+## Plugin init
+##
+
+use strict;
+use Net::SNMP qw(:snmp);
+use FindBin;
+use lib "$FindBin::Bin";
+use lib "/srv/nagios/libexec/";
+use utils qw($TIMEOUT %ERRORS &print_revision &support);
+
+if (eval "require oreon" ) {
+	use oreon qw(get_parameters);
+	use vars qw($VERSION %oreon);
+	%oreon=get_parameters();
+} else {
+	print "Unable to load oreon perl module\n";
+    exit $ERRORS{'UNKNOWN'};
+}
+
+use vars qw($PROGNAME);
+use Getopt::Long;
+use vars qw($opt_V $opt_h $opt_g $opt_v $opt_C $opt_w $opt_c $opt_s $opt_H @test);
+my $pathtorrdbase = $oreon{GLOBAL}{DIR_RRDTOOL};
+
+##
+## Plugin var init
+##
+
+my ($hrStorageDescr, $hrStorageAllocationUnits, $hrStorageSize, $hrStorageUsed);
+my ($AllocationUnits, $Size, $Used);
+my ($tot, $used, $pourcent, $return_code);
+
+$PROGNAME = "$0";
+sub print_help ();
+sub print_usage ();
+Getopt::Long::Configure('bundling');
+GetOptions
+    ("h"   => \$opt_h, "help"         => \$opt_h,
+     "V"   => \$opt_V, "version"      => \$opt_V,
+     "v=s" => \$opt_v, "snmp=s"       => \$opt_v,
+     "C=s" => \$opt_C, "community=s"  => \$opt_C,
+     "w=s" => \$opt_w, "warning=s"    => \$opt_w,
+     "c=s" => \$opt_c, "critical=s"   => \$opt_c,
+     "s=s" => \$opt_s, "swap=s"       => \$opt_s,
+     "H=s" => \$opt_H, "hostname=s"   => \$opt_H);
+
+
+if ($opt_V) {
+    print_revision($PROGNAME,'$Revision: 1.2 $');
+    exit $ERRORS{'OK'};
+}
+
+if ($opt_h) {
+	print_help();
+	exit $ERRORS{'OK'};
+}
+
+$opt_H = shift unless ($opt_H);
+(print_usage() && exit $ERRORS{'OK'}) unless ($opt_H);
+
+
+($opt_v) || ($opt_v = shift) || ($opt_v = "2");
+my $snmp = $1 if ($opt_v =~ /(\d)/);
+
+($opt_C) || ($opt_C = shift) || ($opt_C = "public");
+
+($opt_c) || ($opt_c = shift) || ($opt_c = 95);
+my $critical = $1 if ($opt_c =~ /([0-9]+)/);
+
+($opt_w) || ($opt_w = shift) || ($opt_w = 80);
+my $warning = $1 if ($opt_w =~ /([0-9]+)/);
+if ($critical <= $warning){
+    print "(--crit) must be superior to (--warn)";
+    print_usage();
+    exit $ERRORS{'OK'};
+}
+
+my $swap_limit;
+if ($opt_s)
+{
+    ($opt_s) || ($opt_s = shift) || ($opt_s = 10);
+    $swap_limit = $1 if ($opt_s =~ /([0-9]+)/);
+}
+
+my $start=time;
+my $name = $0;
+
+## Plugin snmp requests
+
+# my $OID_hrStorageDescr = $oreon{MIB2}{HR_STORAGE_DESCR};
+# my $OID_hrStorageAllocationUnits =$oreon{MIB2}{HR_STORAGE_ALLOCATION_UNITS};
+# my $OID_hrStorageSize =$oreon{MIB2}{HR_STORAGE_SIZE};
+# my $OID_hrStorageUsed =$oreon{MIB2}{HR_STORAGE_USED};
+
+# create a SNMP session
+
+my ( $session, $error ) = Net::SNMP->session(-hostname  => $opt_H,-community => $opt_C, -version  => $snmp);
+if ( !defined($session) ) {
+    print("CRITICAL: SNMP Session : $error");
+    exit $ERRORS{'CRITICAL'};
+}
+
+####################
+#### snmp request
+##
+
+my $OID_descr_storage = ".1.3.6.1.2.1.25.2.3.1.3"; #"1.3.6.1.2.1.25.2.3.1.1";
+my $result = $session->get_table(Baseoid => $OID_descr_storage);
+if (!defined($result)) {
+    printf("ERROR: Description Table hrStorageType : %s.\n", $session->error);
+    $session->close;
+    exit $ERRORS{'UNKNOWN'};
+}
+
+my ($virt_alloc, my $virt_used, my $virt_size);
+
+my $indexV = 0;
+my $indexR = 0;
+foreach my $key (oid_lex_sort(keys %$result)) {
+    if  ($result->{$key} =~ m/Swap|Virtual/) {
+	my @cpt = split /\./,$key;
+	$indexV = $cpt[scalar(@cpt) - 1];;
+    }
+    if  ($result->{$key} =~ m/Real|Physical/) {
+	my @cpt = split /\./,$key;
+	$indexR = $cpt[scalar(@cpt)-1];
+    }
+}
+if ($indexV == 0 || $indexR == 0) {
+    printf("ERROR: cannot find ram information");
+    exit $ERRORS{'UNKNOWN'}; 
+}
+my $OID_hrStorage_used = ".1.3.6.1.2.1.25.2.3.1.6";
+my $OID_Swap_storage_used = ".1.3.6.1.2.1.25.2.3.1.6.".$indexV;
+my $OID_RealM_storage_used = ".1.3.6.1.2.1.25.2.3.1.6.".$indexR;
+
+my $used_mem = $session->get_table(Baseoid => $OID_hrStorage_used);
+if (!defined($used_mem)) {
+    printf("ERROR: Description Table hrStorageUsed : %s.\n", $session->error);
+    $session->close;
+    exit $ERRORS{'UNKNOWN'};
+}
+
+my $OID_hrStorage_size = ".1.3.6.1.2.1.25.2.3.1.5";
+my $OID_Swap_storage_size = ".1.3.6.1.2.1.25.2.3.1.5.".$indexV;
+my $OID_RealM_storage_size = ".1.3.6.1.2.1.25.2.3.1.5.".$indexR;
+
+my $total_mem = $session->get_table(Baseoid => $OID_hrStorage_size);
+if (!defined($total_mem)) {
+    printf("ERROR: Description Table hrStorageSize : %s.\n", $session->error);
+    $session->close;
+    exit $ERRORS{'UNKNOWN'};
+}
+
+my $OID_storage_allocationUnits = ".1.3.6.1.2.1.25.2.3.1.4"; 
+my $OID_Swap_storage_allocationUnits = ".1.3.6.1.2.1.25.2.3.1.4.".$indexV;
+my $OID_RealM_storage_allocationUnits = ".1.3.6.1.2.1.25.2.3.1.4.".$indexR;
+my $alloc_units = $session->get_table(Baseoid => $OID_storage_allocationUnits);
+if (!defined($alloc_units)) {
+    printf("ERROR: Description Table hrStorageUsed : %s.\n", $session->error);
+    $session->close;
+    exit $ERRORS{'UNKNOWN'};
+}
+my $swap_used = $used_mem->{$OID_Swap_storage_used} * $alloc_units->{$OID_Swap_storage_allocationUnits};
+my $realM_used = $used_mem->{$OID_RealM_storage_used} * $alloc_units->{$OID_RealM_storage_allocationUnits};
+
+my $swap_size = $total_mem->{$OID_Swap_storage_size} * $alloc_units->{$OID_Swap_storage_allocationUnits};
+my $realM_size = $total_mem->{$OID_RealM_storage_size} * $alloc_units->{$OID_RealM_storage_allocationUnits};
+my $total_memory_used = $swap_used + $realM_used;
+my $total_memory_size = $swap_size + $realM_size;
+
+# percentage of total, physical and swap  memory used
+
+if ($swap_size eq "0"){
+    $swap_size = 1;
+}
+
+my $percent_used = ($total_memory_used/$total_memory_size)*100;
+my $percent_swap_used = ($swap_used/$swap_size) * 100;
+my $percent_realM_used = ($realM_used/$realM_size) * 100;
+$percent_swap_used =~ s/\.[0-9]+//;
+$percent_used =~ s/\.[0-9]+//;
+$percent_realM_used =~ s/\.[0-9]+//;
+
+# return
+
+if(($opt_s) && ($opt_s =~ /([0-9]+)/))
+{
+    if(($percent_realM_used >= 99) && ($percent_swap_used > $swap_limit))
+    {
+	print "swap threshold (".$opt_s."%) excedeed : total memory used : ".$percent_used."%, ram used : ".$percent_realM_used."%, swap used : ".$percent_swap_used."% | used=".$total_memory_used."o size=".$total_memory_size."o\n";
+	exit $ERRORS{'CRITICAL'};
+    }
+}
+
+if ($percent_used >= $opt_c){
+    print "threshold (".$opt_c."%) excedeed : total memory used : ".$percent_used."%, ram used : ".$percent_realM_used."%, swap used : ".$percent_swap_used."% | used=".$total_memory_used."o size=".$total_memory_size."o\n";
+    exit $ERRORS{'CRITICAL'};
+} elsif ($percent_used >= $opt_w){
+    print "threshold (".$opt_w."%) excedeed : total memory used : ".$percent_used."%, ram used : ".$percent_realM_used."%, swap used ".$percent_swap_used."% | used=".$total_memory_used."o size=".$total_memory_size."o\n";
+    exit $ERRORS{'WARNING'};	
+} else {
+    print "total memory used : ".$percent_used."%  ram used : ".$percent_realM_used."%, swap used ".$percent_swap_used."% | used=".$total_memory_used."o size=".$total_memory_size."o\n";
+    exit $ERRORS{'OK'};
+}
+
+sub print_usage () {
+    print "\nUsage:\n";
+    print "$PROGNAME\n";
+    print "   -H (--hostname)   Hostname to query - (required)\n";
+    print "   -C (--community)  SNMP read community (defaults to public,\n";
+    print "                     used with SNMP v1 and v2c\n";
+    print "   -v (--snmp_version)  1 for SNMP v1 (default)\n";
+    print "                        2 for SNMP v2c\n";
+    print "   -V (--version)    Plugin version\n";
+    print "   -h (--help)       usage help\n";
+    print "   -c (--critical)   percentage of memory used at which a critical message will be generated\n";
+    print "   -w (--warning)    percentage of memory used at which a warning message will be generated\n";
+    print "   -s (--swap)       limit of swap memory can reach before the service turns critical, while phyical memory is near 100%\n";    
+}
+
+sub print_help () {
+    print "#=========================================\n";
+	print "#  Copyright (c) 2007 Merethis SARL      =\n";
+	print "#  Developped by Julien Mathis           =\n";
+	print "#  Bugs to http://www.oreon-project.org/ =\n";
+	print "#=========================================\n";
+	print_usage();
+	print "\n";
+}