librenms-librenms/includes/polling/os/ironware.inc.php

<?php

// FIXME snmp_ function!
$hardware = trim(
    exec(
        $config['snmpget'].' -M '.$config['mibdir'].' -O vqs -m FOUNDRY-SN-AGENT-MIB:FOUNDRY-SN-ROOT-MIB '.snmp_gen_auth($device).' '.$device['hostname'].':'.$device['port'].' sysObjectID.0'
    )
);

$hardware = rewrite_ironware_hardware($hardware);

$version = trim(
    exec(
        $config['snmpget'].' -M '.$config['mibdir'].' -O vqs -m FOUNDRY-SN-AGENT-MIB:FOUNDRY-SN-ROOT-MIB '.snmp_gen_auth($device).' '.$device['hostname'].':'.$device['port'].' snAgBuildVer.0'
    )
);

$version = str_replace('V', '', $version);
$version = str_replace('"', '', $version);

$serial = trim(snmp_get($device, 'snChasSerNum.0', '-Ovq', 'FOUNDRY-SN-AGENT-MIB'), '"');