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optimized vrf discovery code, patch by gl-

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git-svn-id: http://www.observium.org/svn/observer/trunk@2945 61d68cd4-352d-0410-923a-c4978735b2b8
This commit is contained in:
Tom Laermans
2012-04-02 17:29:54 +00:00
parent bfdd6e5e58
commit f9fe44380c
1 changed files with 86 additions and 27 deletions
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113
includes/discovery/cisco-vrf.inc.php
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@ -7,60 +7,119 @@ if ($config['enable_vrfs'])
unset($vrf_count);
echo("VRFs : ");
/*
There are 2 MIBs for VPNs : MPLS-VPN-MIB (oldest) and MPLS-L3VPN-STD-MIB (newest)
Unfortunately, there is no simple way to find out which one to use, unless we reference
all the possible devices and check what they support.
Therefore we start testing the MPLS-L3VPN-STD-MIB that is prefered if available.
*/
$oid_cmd = $config['snmpwalk'] . " -M " . $config['mibdir'] . " -m MPLS-VPN-MIB -CI -Ln -Osqn -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " mplsVpnVrfRouteDistinguisher";
$oids = shell_exec($oid_cmd);
if ($debug) { echo("$oid_cmd -> $oids \n"); }
// Grab all the info first, then use it in the code.
// It removes load on the device and makes things much faster
$oids = str_replace(".1.3.6.1.3.118.1.2.2.1.3.", "", $oids);
$oids = str_replace(" \"", "||", $oids);
$oids = str_replace("\"", "", $oids);
$oids = trim($oids);
foreach (explode("\n", $oids) as $oid)
$rds = snmp_walk($device, "mplsL3VpnVrfRD", "-Osqn", "MPLS-L3VPN-STD-MIB", NULL);
if (empty($rds))
{
$rds = snmp_walk($device, "mplsVpnVrfRouteDistinguisher", "-Osqn", "MPLS-VPN-MIB", NULL);
$vpnmib = "MPLS-VPN-MIB";
$rds = str_replace(".1.3.6.1.3.118.1.2.2.1.3.", "", $rds);
$descrs_oid = ".1.3.6.1.3.118.1.2.2.1.2";
$ports_oid = ".1.3.6.1.3.118.1.2.1.1.2";
}
else
{
$vpnmib = "MPLS-L3VPN-STD-MIB";
$rds = str_replace(".1.3.6.1.2.1.10.166.11.1.2.2.1.4.", "", $rds);
$descrs_oid = ".1.3.6.1.2.1.10.166.11.1.2.2.1.3";
$ports_oid = ".1.3.6.1.2.1.10.166.11.1.2.1.1.2";
}
if ($debug)
{
echo("\n[DEBUG]\nUsing $vpnmib\n[/DEBUG]\n");
echo("\n[DEBUG OIDS]\n$rds\n[/DEBUG]\n");
}
$rds = trim($rds);
$descrs = snmp_walk($device, $descrs_oid, "-Osqn", $vpnmib, NULL);
$ports = snmp_walk($device, $ports_oid, "-Osqn", $vpnmib, NULL);
$descrs = trim(str_replace("$descrs_oid.", "", $descrs));
$ports = trim(str_replace("$ports_oid.", "", $ports));
$descr_table = array();
$port_table = array();
foreach (explode("\n", $descrs) as $descr)
{
$t = explode(" ", $descr);
$descr_table[$t[0]] = $t[1];
}
foreach (explode("\n", $ports) as $port)
{
$t = explode(" ", $port);
$dotpos = strrpos($t[0], ".");
$vrf_oid = substr($t[0], 0, $dotpos);
$port_id = substr($t[0], $dotpos+1);
if (empty($port_table[$vrf_oid])) { $port_table[$vrf_oid][0] = $port_id; }
else {array_push($port_table[$vrf_oid], $port_id);}
}
foreach (explode("\n", $rds) as $oid)
{
echo "\n";
if ($oid)
{
list($vrf['oid'], $vrf['mplsVpnVrfRouteDistinguisher']) = explode("||", $oid);
$vrf['name'] = trim(shell_exec($config['snmpget'] . " -M " . $config['mibdir'] . " -m MPLS-VPN-MIB -Ln -Osq -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " mplsVpnVrfRouteDistinguisher.".$vrf['oid']));
list(,$vrf['name'],, $vrf['mplsVpnVrfRouteDistinguisher']) = explode("\"", $vrf['name']);
$vrf['mplsVpnVrfDescription'] = trim(shell_exec($config['snmpget'] . " -M " . $config['mibdir'] . " -m MPLS-VPN-MIB -Ln -Osqvn -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " mplsVpnVrfDescription.".$vrf['oid']));
// 8.49.53.48.56.58.49.48.48 "1508:100"
// First digit gives number of chars in VRF Name, then it's ASCII
list($vrf_oid, $vrf_rd) = explode(" ", $oid);
$oid_values = explode(".", $vrf_oid);
$vrf_name = "";
for ($i = 1; $i <= $oid_values[0]; $i++) {$vrf_name .= chr($oid_values[$i]);}
echo "\n [VRF $vrf_name] OID - $vrf_oid";
echo "\n [VRF $vrf_name] RD - $vrf_rd";
echo "\n [VRF $vrf_name] DESC - ".$descr_table[$vrf_oid];
if (@mysql_result(mysql_query("SELECT count(*) FROM vrfs WHERE `device_id` = '".$device['device_id']."'
AND `vrf_oid`='".$vrf['oid']."'"),0))
AND `vrf_oid`='$vrf_oid'"),0))
{
$update_query = "UPDATE `vrfs` SET `mplsVpnVrfDescription` = '".$vrf['mplsVpnVrfDescription']."', `mplsVpnVrfRouteDistinguisher` = '".$vrf['mplsVpnVrfRouteDistinguisher']."' ";
$update_query .= "WHERE device_id = '".$device['device_id']."' AND vrf_oid = '".$vrf['oid']."'";
$update_query = "UPDATE `vrfs` SET `mplsVpnVrfDescription` = '$descr_table[$vrf_oid]', `mplsVpnVrfRouteDistinguisher` = '$vrf_rd' ";
$update_query .= "WHERE device_id = '".$device['device_id']."' AND vrf_oid = '$vrf_oid'";
mysql_query($update_query);
}
else
{
$insert_query = "INSERT INTO `vrfs` (`vrf_oid`,`vrf_name`,`mplsVpnVrfRouteDistinguisher`,`mplsVpnVrfDescription`,`device_id`) ";
$insert_query .= "VALUES ('".$vrf['oid']."','".$vrf['name']."','".$vrf['mplsVpnVrfRouteDistinguisher']."','".$vrf['mplsVpnVrfDescription']."','".$device['device_id']."')";
$insert_query .= "VALUES ('$vrf_oid','$vrf_name','$vrf_rd','".$descr_table[$vrf_oid]."','".$device['device_id']."')";
mysql_query($insert_query);
}
$vrf_id = @mysql_result(mysql_query("SELECT vrf_id FROM vrfs WHERE `device_id` = '".$device['device_id']."' AND `vrf_oid`='".$vrf['oid']."'"),0);
$vrf_id = @mysql_result(mysql_query("SELECT vrf_id FROM vrfs WHERE `device_id` = '".$device['device_id']."' AND `vrf_oid`='$vrf_oid'"),0);
$valid_vrf[$vrf_id] = 1;
echo("\nRD:".$vrf['mplsVpnVrfRouteDistinguisher']." ".$vrf['name']." ".$vrf['mplsVpnVrfDescription']." ");
$ports_oid = ".1.3.6.1.3.118.1.2.1.1.2." . $vrf['oid'];
$ports = shell_exec($config['snmpwalk'] . " -M " . $config['mibdir'] . " -m MPLS-VPN-MIB -CI -Ln -Osqn -" . $device['snmpver'] . " -c " . $device['community'] . " " . $device['hostname'].":".$device['port'] . " $ports_oid");
$ports = trim(str_replace($ports_oid . ".", "", $ports));
# list($ports) = explode(" ", $ports);
echo(" ( ");
foreach (explode("\n", $ports) as $if_id)
echo "\n [VRF $vrf_name] PORTS - ";
foreach ($port_table[$vrf_oid] as $if_id)
{
$interface = mysql_fetch_assoc(mysql_query("SELECT * FROM ports WHERE ifIndex = '$if_id' AND device_id = '" . $device['device_id'] . "'"));
echo(makeshortif($interface['ifDescr']) . " ");
mysql_query("UPDATE ports SET ifVrf = '".$vrf_id."' WHERE interface_id = '".$interface['interface_id']."'");
mysql_query("UPDATE ports SET ifVrf = '$vrf_id' WHERE interface_id = '".$interface['interface_id']."'");
$if = $interface['interface_id'];
$valid_vrf_if[$vrf_id][$if] = 1;
}
echo(") ");
}
}
echo "\n";
$sql = "SELECT * FROM ports WHERE device_id = '" . $device['device_id'] . "'";
$data = mysql_query($sql);
while ($row = mysql_fetch_assoc($data))