librenms/includes/polling/os/junos.inc.php

<?php

$jun_ver = snmp_get($device, '.1.3.6.1.2.1.25.6.3.1.2.2', '-Oqv', 'HOST-RESOURCES-MIB');

if (strpos($poll_device['sysDescr'], 'olive')) {
    $hardware = 'Olive';
    $serial   = '';
}
else {
    $hardware = snmp_get($device, 'sysObjectID.0', '-Ovqs', '+Juniper-Products-MIB:JUNIPER-CHASSIS-DEFINES-MIB', $config['install_dir'].'/mibs/junos');
    $hardware = 'Juniper '.rewrite_junos_hardware($hardware);
    $serial   = snmp_get($device, '.1.3.6.1.4.1.2636.3.1.3.0', '-OQv', '+JUNIPER-MIB', '+'.$config['install_dir'].'/mibs/junos');
}

list($version)  = explode(']', $jun_ver);
list(,$version) = explode('[', $version);
$features       = '';